Proportional Valves. Proportional solenoid valves for pressure and flow control

Transcription

1 Proportional Valves Proportional solenoid valves for pressure and flow control EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7 -

2 Electro- Proportional Valves Section Contents Typical Application Rated Flow Model Pressure bar (psi) L/min (USgpm) Page Proportional Valve Cartrides Introduction, Features and enefits...-4 Proportional Flow Controls, Poppet Type EPV...35 (5)...3 (8)...-6 EPV6...8 (4)...6 (4)...- ESV-8-O... (3)...6 (6)...-6 ESV-8-C... (3)...7 (9)...-8 ESV--O... (3)...98 (8)...- ESV--C... (3)...5 (4)...- ESV--O... (3)...8 (34)...-4 ESV--C... (3)...5 (4)...-6 Proportional Flow Controls, Spool Type EFV--O... (3)...38 ()...-8 EFV--C... (3)...38 ()...-3 EFV--O... (3)...4 (7.5) EFV--C... (3)...77 (.6) EFV--O... (3)...4 (3)...-4 EFV--C... (3)...4 (3) Proportional Relief ERV (5)...,8 (.75) ERV3-... (3)...,8 (.5) ERV- spool type...4 (35)...6 (5)...-5 ERV-6 spool type... (3)...3 (35)...-5 Proportional Pressure Reducing/Relieving EPRV (5)...7,6 () EPRV (5)...7,6 () EPRV3-... (3)...3 (8) EPRV (5)...38 ()...-6 Proportional Inverse Relief IRV-... (3)... (.5)...-6 Note Proportional valve solenoid coils and electronic valve drivers are covered in section C of this Catalog. - EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

3 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-3

4 Electro-Proportional Valves Section Introduction tive, way, pressure compensated flow regulator. The ERV- is an electric, proportionally controlled, internally pilot operated, spool type screw-in relief valve. It is capable of handling flows from 3,8-6, L/min (-5 USgpm) at pressures from 35- bar (5-3 psi). Also available is an ERV-6 which is capable of handling flows from 7,6-3 L/min. (-35 USgpm) at pressures from 35- bar (-5 psi). The ERV- is a low flow electric proportionally controlled relief valve similar to the ERV-. This valve is rated for flows from,-,8 L/min ( USgpm) and pressures up to 35 bar (5 psi). The ERV3- is a low flow electric proportionally controlled relief valve similar to the ERV-. This valve is rated for flows up to,8 L/min (. USgpm) and pressures up to 7 bar (3 psi). The EPRV-8 is an electric, proportionally controlled, direct acting spool type, screw-in pressure reducing/relieving valve. It is capable of handling flows from -7,6 L/min (- USgpm) at set pressures from - bar (-3 psi). The EPRV- is an electric, proportionally controlled, internally pilot operated, spool type, screw-in pressure reducing/relieving valve. It is capable of handling flows from -7,6 L/min (- USgpm) at set pressures from 4-35 bar (-5 psi). Also available is an ERV-6 which is capable of handling flows from -38 L/min (- USgpm) at set pressures from 4-35 bar (-5 psi). The EPRV3- is an electric, proportionally controlled, internally pilot operated, This section gives basic specifications for the complete line of Vicker s screw-in proportional control valves. Its purpose is to provide a quick, convenient reference tool when choosing proportional valves or when designing a system using these components. The EPV has several outstanding performance features which give it a unique position in the screw-in cartridge valve market. Valve gain linearity, flow force pressure compensation characteristics above bar (3 psi) and low internal leakage. The EPV6 is a proportionally controlled two-way poppet type valve. The main poppet amplifies a small flow through the pilot circuit and is comparable to a transistor. As the transistor uses small currents to control larger currents, the hydraulic valve transistor or VALVISTOR uses the pilotflow to control the main stage flow with servo-like response flow to control. The ESV is a proportional two-way, presssure compensated, poppet type flow control valve. The valve is available in 8,, and sizes, both normally open or normally closed in the de-energized position. The EFV is a proportionally controlled two-way, spool type flow control valve. Technically the valve is not pressure compensated, but it is partiall flow force pressure compensated. The EFV is a three port, pressure compensated, proportional flow control valve. The valve can be used as a priority flow regulator, with regulated flow being supplied to port 3 and excess flow being by-passed to port. If port is blocked the valve functions as a restricspool type, screw-in pressure reducing/relieving valve. It is capable of handling flows from -3 L/min (-8 USgpm) at set pressures from 35-7 bar (5-3 psi). Vickers proportional pressure and flow control valves are designed to be easily controlled by the simplest of DC electrical devices such as a volt battery and a potentiometer. Varying the voltage at the coil is one of the simplest means of control available. Any of the Vickers DC coils will work on most of these valves simply by varying the voltage between and 75% of the rated coil voltage. It should be noted that as the operating temperature of a coil increases, the solenoid force decreases. Therefore if the voltage is held constant as the coil heats up then valve pressure (or flow) will change. The IRV is a proportionally controlled poppet type, relief valve, with an inverse function. This valve is capable of handling flows up to L/min (.5 USgpm) and presssures up to bar (3 psi). Electrical current controls with PWM are recomended for all Eaton proportional valves. Closed-loop electrical control with feedback from the parameter to be monitored will provide the most accurate control. Valve Features and enefits Products in this catalog have been fatigue tested to one million cycles at 3% or million cycles at 5% of rated pressure All operating parts are hardened steel, ground and honed for long life and low leakage Designed for maximum flexibility and minimal space requirements All exposed cartridge surfaces are zinc dichromate plated to resist corrosion Reliable, economical and compact Rated flows up to 6 L/min (4 USgpm) Optional nose-in, side-out or side-in, nose out flow direction (EPV6 series) Coil Features and enefits The valves in this catalog are offered with a choice of two or three standard voltages and several types of electrical connections. For other coil ratings and connections, consult your Eaton applications engineer. Variety of voltages and terminations Coils are interchangeable for serviceability on the EPV and EPV6. Coils are interchangeable for serviceability on the ERV-, EPV-6, EPRV- and EPRV-6 Compact, one-piece weather-proof encapsulated design. Eliminates need for extra seals An arc suppression diode molded into the coil is available as a standard option on ERV, EPRV and EFV valves Fluid Cleanliness Proper fluid condition is essential for long and satifactory life of hydraulic components and systems. Hydraulic fluid must have the correct balance of cleanliness, materials, and additives for protection against wear of components, elevated viscosity, and inclusion of air. -4 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

5 WARNING Application of these products beyond published performance specifications may cause valve malfunction which may result in personal injury and/or damage to the machine. WARNING For pressures over bar (3 psi) use steel housing. EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-5

6 EPV Proportional flow control valve (poppet type) Description The EPV is a direct acting, uni-directional, poppet type, -way, -position, normally closed proportional flow control valve. Operation In the de-energized position, flow is blocked from port to port, with no reverse flow permitted. When energized, flow is allowed from port to port in direct proportion to the current applied to the solenoid coil. Functional Symbol Sectional View RATINGS AND SPECIFICATIONS Performance data is typical with fluid at,8 cst (5 SUS) and 49 C ( F) Typical application pressure (at port ) 35 bar (5 psi) Cartridge fatigue pressure (infinite life) 35 bar (5 psi) Rated flow - 3 L/min ( - 8 USgpm) Operating ambient temperature -3 to 9 C (- to 94 F) Cavity C-- Fluids Anti-wear hydraulic oils with una-n seals (standard) Phosphate esters (non-alkyl) with Viton seals are available by request Vitonis a registered trademark of E.I. DuPont Weight cartridge only,78 kg (.7 lbs) Filtration 7 - bar ( - 3 psi) Cleanliness code 7/5/ + bar (3+ psi) Cleanliness code 5/3/ Standard housing materials Aluminum or Steel Typical hysteresis Less than 4% of rated current at bar pressure drop Pulse Width Modulated (PWM) Internal leakage cm 3 4 bar ( psi) and oil viscosity of 3 cst Oil viscosity range - 8 cst Nominal supply voltage or 4 VDC Threshold current Adj from 3-6 ma ( VDC) Adj from 5-3 ma (4 VDC) Coil max flow.7 amps 4 VDC.4 amps VDC Recommended PWM frequency - Hz application dependent, 5 Hz typ Coil C (86 F) V-6.5Ω 4V-5.Ω Power rated current V-.8 watts and C coil temperature 4V-.8 watts Cartridge seal kit (una-n) -6 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

7 Model Code EPV EPV * ** ** *** ( * ) * ** Function EPV - Electro-proportional flow control valve, poppet type Size - Size 3 Valve housing material Omit for cartridge only A - Aluminum S - Steel Maximum operating pressure for aluminum housing is bar (3 psi). Aluminum housings can be used for pressures up to bar (3 psi). Steel housings must be used for operating pressures above bar (3 psi). Dimensions mm (inch) Valve is shown with U coil. See Section C for coil information. Torque cartridge in housing A Nm (35-4 ft. lbs) S Nm (5-55 ft. lbs) 4 Port size CODE PORT SIZE HOUSING NUMER Aluminum Steel 3G 3/8 SPP H SAE H SAE T SAE T SAE 8-75 See section J for housings. 5 Seals & Filter N - una-n V - Viton NF - una-n and 6 mesh filter screen VF - Viton and 6 mesh filter screen 6 Voltage rating D -VDC 4D - 4VDC Opening clearance, (.8) 8,5 (3.7) 3,4 (5.7) 34, (.34) 8 Coil/Connector types CONNECTOR lank - No coil VDC 4VDC W - Leadwire (DC only) Q - Spade terminals (DC only) U - DIN Y - Metri-Pack 5 male* F - Weather-Pack male *Preferred Packard connector. Ø 6,7 (.5) Manual override Ø 43,5 (.7) Ø 5,8 (.) 4,9 (.65).875"-4 Thd. Ø 5,8 (.6) 7 Manual override option* lank - No manual override M - Pin type S - Screw type *Manual override is available in two different configurations, either push pin type is used when system pressure does not exceed bar (3 psi). The screw type can be used at any system pressure. For details see page Design number WARNING The cavity should be machined to the 4,9 (.56) maximum diameter and 36, (.47) maximum depth. (See cavity, page M-) WARNING When using the Screw Type override, care must be taken to return the override back to its neutral position before activating the valve. Failure to take this precaution may result in personal injury or damage to the machine. EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-7

8 Performance Curves EPV Step Response Data Flow response in % of max flow On stroke 35 msec Typical current step to provide 5% flow Off stroke Time - sec Flow vs Current With bar differential between inlet and outlet A - bar (3 psi) pressure drop from Port to Port - bar (5 psi) pressure drop from Port to Port Flow - USgpm A 3 Flow - L/min % Current - ma -8 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

9 Performance Curves EPV Flow vs Pressure Drop Per % of Input Current L/min USgpm Flow Pressure drop - psi 3 A - % of input current - 85% of input current C - 7% of input current D- 57% of input current E - 43% of input current Pressure drop - bar Typical Flow Response For an amplitude of +_ 4% maximum stroke (center to offset) about the 5% position. P = bar (45 psi) -3 A Phase lag - degrees -6.4 Hz Hz Hz Hz Frequecy Hz A - d - Phase Lag EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-9

10 EPV6 Valvistor Proportional flow control valve Functional Symbols 3 EPV6-A EPV6- Sectional View EPV6-A Side-out, nose-in Description The EPV6 is a -way, normally closed, pressure compensated, poppet type, screw-in cartridge electro-proportional flow control valve. Operation A style (nose in, side out) - In the de-energized position this valve remains closed from port to port. When current is applied to the coil, a controlled increasing flow will be allowed from port to port, in proportion to the current applied. style (side in, nose out) - in the de-energized position the valve remains closed from port to port. When current is applied to the coil, a controlled increasing flow will be allowed from port to port. In both examples free reverse flow is allowed in the opposite direction. EPV6- Side-in, nose-out RATINGS AND SPECIFICATIONS Performance data is typical with fluid at,8 cst (5 SUS) and 49 C ( F) Typical application pressure Cartridge fatigue pressure (infinite life) Rated flow Operating media temperature Cavity Fluids Weight cartridge only 8 bar (4 psi) 8 bar (4 psi) NFPA rated to 6 L/min (4 USgpm) -3 to 9 C (- to 94 F) C-6-3S (undercut) Antiwear hydraulic oils with una-n seals (standard) Phosphate esters (non-alkyl) with Viton seals are available by request Viton is a registered trademark of E.I. DuPont kg (. lbs) Filtration 7 - bar ( - 3 psi) Cleanliness code 7/5/ + bar (3+ psi) Cleanliness code 5/3/ Standard housing materials Aluminum or steel Typical hysteresis Less than 4% of rated bar pressure drop Pulse Width Modulated (PWM) Internal 4 bar ( psi) EPV6A 5 cm 3 /min maximum and oil viscosity 3cSt EPV6 cm 3 /min maximum Oil viscosity range - 8 cst Nominal supply voltage or 4 VDC Threshold current Adj from 35-6 ma ( VDC) Adj from 75-5 ma (4 VDC) Coil current for maximum flow.7 4 VDC.4 VDC Recommended PWM frequency - Hz application dependent, 5 Hz typ Coil C (68 F) V-6.5Ω/4V-5.Ω Power rated current V-.8 watts and C coil temperature 4V-.8 watts Cartridge seal kit (una-n) - EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

11 Model Code EPV6 EPV 6 * ** * *** ** *** * * ** Function EPV - Electro-proportional flow control valve, poppet type Size 6-6 Size 3 Flow direction A - Nose-in, side-out - Side-in, nose-out 4 Rated bar P 4-4 L/min (.5 USgpm) 6-6 L/min (6 USgpm) - L/min (6 USgpm) 6-6 L/min (4 USgpm) 5 Valve housing material Omit for cartridge only A - Aluminum S - Steel Aluminum housings can be used for pressures up to bar (3 psi). Steel housings must be used for operating pressures above bar (3 psi). M - Pin type manual override option 6 Port Size - Cartridge only CODE PORT SIZE HOUSING NUMER Aluminum Steel EPV6-A EPV6- EPV6-A EPV6-4G / SPP G 3/4 SPP H SAE H SAE T SAE T SAE C CETOP5 (NFPA D5) Interface (Requires steel body) See section J for housings. 7 Seals & Filter N - una-n V - Viton NF - una-n and 6 mesh filter screen VF - Viton and 6 mesh filter screen 8 Voltage rating D - VDC 4D - 4VDC 9 Manual override option lank - No manual override M - Pin type S - Screw type *Manual override is available in two different configurations, either push pin type is S - Screw type manual override option used when system pressure does not exceed bar (3 psi). The screw type can be used at any system pressure. Coil/Connector types CONNECTOR COIL PART NUMER VDC 4VDC lank - No coil W - Leadwire (DC only) Q - Spade terminals (DC only) U - DIN Y - Metri-Pack 5 male* F - Weather-Pack male N - Deutsch DT4-P *Preferred Packard connector. See Section C for coil information. Design number WARNING When using the Screw Type override, care must be taken to return the override back to its neutral position before activating the valve. Failure to take this precaution may result in personal injury or damage to the machine. CAUTION A separate check valve is required down stream to isolate the EPV valve from load forces when the EPV is used to hold a load. EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7 -

12 Dimensions EPV6-A EPV6-A Note Nose-in, side-out mm (inch) When stand alone housings are used, the following guidelines apply: EPV6-A: Port 3 is to be plugged. Screw type actuator (shown) 3 mm hex socket EPV6-: Port 3 is to be connected to port in order to provide the required feedback flow path. Ø 43,5 (.7) 7,3 (.7) 9, (5.7) 4,7 (4.9) 85,3 (7.9) 67,9 (.67) 8, (7.).3" - Thd. 38, Hex (.5) Ø 5,4 (.) With manual actuator No manual actuator Valves are shown with U coil. See Section C for coil information. Torque cartridge in aluminum housing 8- Nm (8-9 ft. lbs) Torque cartridge in steel housing Nm (- ft. lbs) - EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

13 Dimensions EPV6- EPV6- Side-in, nose-out mm (inch) 3 Required external connection with standard C-6-3S cavity Screw type actuator (shown) 3 mm hex socket 7,3 (.7) Ø 43,5 (.7) 9, (5.7) 4,7 (4.9) 85,3 (7.9) 67,9 (.67) 8, (7.) 3 3.3"- Thd. 38, Hex (.5) Ø 5,4 (.) Ø 8,6 (.) With manual actuator No manual actuator For EPV6- (flow to ), Port 3 must be connected to Port externally to the cartridge, either by passages in the cavity block or external plumbing. When purchased with undercut body, this connection is included in the body and Port 3 is not machined. A separate external port connection is not required for EPV6-A (flow to ). EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-3

14 Dimensions EPV6 EPV6-A-**-S-5C-**-D-(*)-*- CETOP 5 Interface mm (inch) 76, (.9) Required for removal 9,7 (8.65) 99,5 (3.9).5- UNC x.5" socket head cap screw (olt Kit 55634) M6 x 6 socket head cap screw (olt Kit 68963) 7,6 (.8) 69,5 (.74) 6, (.38) 5, (.) ISO-44-AC-5-4-A (NFPA D5) mounting surface,8 (.89) P? A,7 (.46) Tb Ta PA Ta Tb Ø 6,96/6,85? thru 4 holes EPV6--**-S-5C-**-D-(*)-*- CETOP 5 Interface mm (inch) PA Tb Ta 5, (.) 7,6 (.8) 69,5 (.74) 6, (.38).5- UNC x.5" socket head cap screw (olt Kit 55634) M6 x 6 socket head cap screw (olt Kit 68963) 76, (.9) Required for removal 9,7 (8.65) 99,5 (3.9) ISO-44-AC-5-4-A (NFPA D5) mounting surface,8 (.89) P,7 (.46) Note CETOP 5 Seal Kit Tb? A Ta Ø 6,96/6,85 thru 4 holes -4 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

15 Performance Curves EPV6 Typical pressure compensation Flow %* I 5 H 4 G 6 Pressure Differential - psi F E D C A COMMAND CURRENT V 4V A 6 ma 3mA 7 ma 35mA C 8 ma 4mA D 9 ma 45mA E ma 5mA F ma 55mA G ma 6mA H 3 ma 65mA I 4 ma 7mA Pressure Differential - bar * Flow interims of % for each poppet size Typical metering performance Flow %* UPPER TOLERANCE OF FLOW NOMINAL FLOW (LOWER TOLERANCE) E D C A PRESSURE DIFFERENTIAL A bar 5 psi bar 3 psi C 5 bar 7 psi D bar 5 psi E bar 3 psi (4V) (V) Command Current, ma * Flow interims of % for each poppet size Step response definition of terms Delay 9% 9% Reach time On stroke valve response time COMMAND SIGNAL Delay FLOW RESPONSE TIME % % 9% Reach time % Off stroke valve response time PRESSURE L/MIN (3 USGPM) On Stroke Off Stroke Pressure Delay/ Delay/ drop P Reach 9% Reach 9% bar (9 psi) 4 ms/35ms 5 ms/5 ms bar (45 psi) 4 ms/7ms 5 ms/7ms EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-5

16 ESV-8-O Proportional flow control valve Description The ESV-8-O is a -way, - position, pilot operated, poppet type, normally open, proportional flow, control, screw-in cartridge valve. Operation In the de-energized position, this valve allows free flow from port to port and restricts flow from port to port. In the energized position, flow is blocked from port to port, and free flow is allowed from port to port. The valve flow is proportional to the current applied to the coil. Functional Symbol Profile View RATINGS AND SPECIFICATIONS Performance data is typical with fluid at,8 cst (5 SUS) and 49 C ( F) Typical application pressure bar (3 psi) Cartridge endurance rating million cycles Cartridge fatigue pressure rating (NFPA/T.6. R-) bar (3 psi) Rated flow psid psid 6 3 psid Hysteresis Usgpm with dither Leakage (fully closed) 5 drops/min 3 psi Ambient operating temperature -3 to 9 C (- to 94 F) Maximum oil temperature C (48 F) Maximum internal coil temperature C (39 F) Nominal supply voltage /4V Current to fully close valve -5 ma (V coil), ma (4V coil) Weight cartridge only Cartridge only. Kg (.3 lbs) Fluids All general purpose hydraulic fluids such as: MIL-H-566, SAE, SAE, etc. Filtration Cleanliness code 8/6/3 Cavity C-8- Seal Kit (una-n), (Viton ) Viton is a registered trademark of E.I. DuPont Flow - USgpm Pressure Drop - PSID Flow - USgpm A C Current - Amps Pressure Differential A - 35 psi - psi C - 5 psi -6 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

17 Model Code ESV-8-O ESV - 8 X - O - X XX - XXX X X X XX - XX Function ESV - Proportional flow control Size 8-8 Size 3 Seal Material lank - una N V - Viton 4 Style O - Normally open 5 Housing Material lank - Cartridge only A - Aluminum 6 Port Size CODE PORT SIZE HOUSING NUMER Aluminum Cartridge Only G /8" SPP G 3/8 SPP T SAE T SAE T SAE See section J for housing details. 7 Coil Voltage Coil Series - No coil - VDC lank - No Coil X - X Series, W 4-4 VDC 8 Type of Power lank - No coil D - DC w/o diode - DC with diode 9 Connection Type lank - No Coil G - ISO 44 DIN 4365 N - Deutsch (DC Only) P - Conduit Q - Spade terminals W - Leadwire Y - Amp JR (DC Only) For coil dimensions see Section C. Coil Special Features lank - No coil - No Special Feature Valve Special Features lank - None EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-7

18 ESV-8-C Proportional flow control valve Description The ESV-8-C is a -way, - position, pilot operated, poppet type, normally closed, proportional flow control, screw-in cartridge valve. Operation In the de-energized position, this valve blocks flow from port to port and free flow is allowed from port to port. In the energized position, flow from port to port is restricted while free flow is allowed from port to port. The valve flow is proportional to the current applied to the coil. Functional Symbol Profile View RATINGS AND SPECIFICATIONS Performance data is typical with fluid at,8 cst (5 SUS) and 49 C ( F) Typical application pressure bar (3 psi) Cartridge endurance rating million cycles Cartridge fatigue pressure rating (NFPA/T.6. R-) bar (3 psi) Rated flow psid psid 9 3 psid Hysteresis Usgpm with dither Leakage (fully closed) 5 drops/min 3 psi Ambient operating temperature -3 to 9 C (- to 94 F) Maximum oil temperature C (48 F) Maximum internal coil temperature C (39 F) Nominal supply voltage /4V Current to open valve ma (V coil), ma (4V coil) Weight cartridge only Cartridge only. Kg (.4 lbs) Fluids All general purpose hydraulic fluids such as: MIL-H-566, SAE, SAE, etc. Filtration Cleanliness code 8/6/3 Cavity C-8- Seal Kit (una-n), (Viton) Viton is a registered trademark of E.I. DuPont Flow - USgpm Pressure Drop - PSID Flow - USgpm Current - Amps Pressure Differential A - 3 psi - psi C - 5 psi A C -8 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

19 Model Code ESV-8-C ESV - 8 X - C - X XX - XXX X X X XX - XX Function ESV - Proportional flow control Size 8-8 Size 3 Seal Material lank - una N V - Viton 4 Style C - Normally closed 5 Housing Material lank - Cartridge only A - Aluminum 6 Port Size CODE PORT SIZE HOUSING NUMER Aluminum Cartridge Only G /4" SPP G 3/8 SPP T SAE T SAE T SAE See section J for housing details. 7 Coil Voltage Coil Series - No coil - VDC lank - No Coil X - X Series, W 4-4 VDC 8 Type of Power lank - No coil D - DC w/o diode - DC with diode 9 Connection Type lank - No Coil G - ISO 44 DIN 4365 N - Deutsch (DC Only) P - Conduit Q - Spade terminals W - Leadwire Y - Amp JR (DC Only) For coil dimensions see Section C. Coil Special Features lank - No coil - No Special Feature Valve Special Features lank - None EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-9

20 ESV--O Proportional flow control valve Description The ESV--O is a -way, -position, pilot operated, poppet type, normally open, proportional flow, control, screw-in cartridge valve. Operation In the de-energized position, this valve allows free flow from port to port and restricts flow from port to port. In the energized position, flow is blocked from port to port, and free flow is allowed from port to port. The valve flow is proportional to the current applied to the coil. Functional Symbol Profile View RATINGS AND SPECIFICATIONS Performance data is typical with fluid at,8 cst (5 SUS) and 49 C ( F) Typical application pressure bar (3 psi) Cartridge endurance rating million cycles Cartridge fatigue pressure rating (NFPA/T.6. R-) bar (3 psi) Rated flow 5 psid 6 psid 6 3 psid Hysteresis Usgpm with dither Leakage (fully closed) 5 drops/min 3 psi Ambient operating temperature -3 to 9 C (- to 94 F) Maximum oil temperature C (48 F) Maximum internal coil temperature C (39 F) Nominal supply voltage /4V Current to fully close valve - ma (V coil), 5-6 ma (4V coil) Weight cartridge only Cartridge only.4 Kg (.3 lbs) Fluids All general purpose hydraulic fluids such as: MIL-H-566, SAE, SAE, etc. Filtration Cleanliness code 8/6/3 Cavity C-- Seal Kit (una-n), (Viton ) Viton is a registered trademark of E.I. DuPont Flow - USgpm Pressure Drop - PSID Flow - USgpm A C Pressure Drop - bar Pressure Differential A - 3 psi - psi C - 5 psi Current - Amps Flow - L/min - EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

21 Model Code ESV--O ESV - X - O - X XX - XXX X X X XX - XX Function ESV - Proportional flow control Size - Size 3 Seal Material lank - una N V - Viton 4 Style C - Normally Open 5 Housing Material lank - Cartridge only A - Aluminum 6 Port Size CODE PORT SIZE HOUSING NUMER Aluminum Cartridge Only 3 3/8" SPP T SAE G /4" SPP G 3/8" SPP H SAE H SAE See section J for housing details. 7 Coil Voltage Coil Series - No coil - VDC lank - No Coil X - X Series, W 4-4 VDC 8 Type of Power lank - No coil D - DC w/o diode - DC with diode 9 Connection Type lank - No Coil G - ISO 44 DIN 4365 N - Deutsch (DC Only) P - Conduit Q - Spade terminals W - Leadwire Y - Amp JR (DC Only) For coil dimensions see Section C. Coil Special Features lank - No coil - No Special Feature Valve Special Features lank - None EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7 -

22 ESV--C Proportional flow control valve Description The ESV--C is a -way, -position, pilot operated, poppet type, normally open, proportional flow, control, screw-in cartridge valve. Operation In the de-energized position, this valve blocks flow from port to port and free flow is allowed from port to port. In the energized position, flow from port to port is restricted while free flow is allowed from port to port. The valve flow is proportional to the current applied to the coil. Functional Symbol Profile View RATINGS AND SPECIFICATIONS Performance data is typical with fluid at,8 cst (5 SUS) and 49 C ( F) Typical application pressure bar (3 psi) Cartridge endurance rating million cycles Cartridge fatigue pressure rating (NFPA/T.6. R-) bar (3 psi) Rated flow 7 5 psid 3 psid 4 3 psid Hysteresis Usgpm with dither Leakage (fully closed) 5 drops/min 3 psi Ambient operating temperature -3 to 9 C (- to 94 F) Maximum oil temperature C (48 F) Maximum internal coil temperature C (39 F) Nominal supply voltage /4V Current to fully open valve 9- ma (V coil), 45-5 ma (4V coil) Weight cartridge only Cartridge only.3 Kg (.8 lbs) Fluids All general purpose hydraulic fluids such as: MIL-H-566, SAE, SAE, etc. Filtration Cleanliness code 8/6/3 Cavity C-- Seal Kit (una-n), (Viton ) Viton is a registered trademark of E.I. DuPont Flow - USgpm Pressure Drop - bar Pressure Drop - PSID Flow - L/min Flow - USgpm 45 4 A C Current - Amps Pressure Differential A - 3 psi - psi C - 5 psi - EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

23 Model Code ESV--C ESV - X - C - X XX - XXX X X X XX - XX Function ESV - Proportional flow control Size - Size 3 Seal Material lank - una N V - Viton 4 Style C - Normally Closed 5 Housing Material lank - Cartridge only A - Aluminum 6 Port Size CODE PORT SIZE HOUSING NUMER Aluminum Cartridge Only 3 3/8" SPP T SAE G /4" SPP G 3/8" SPP H SAE H SAE See section J for housing details. 7 Coil Voltage Coil Series - No coil - VDC lank - No Coil X - X Series, W 4-4 VDC 8 Type of Power lank - No coil D - DC w/o diode - DC with diode 9 Connection Type lank - No Coil G - ISO 44 DIN 4365 N - Deutsch (DC Only) P - Conduit Q - Spade terminals W - Leadwire Y - Amp JR (DC Only) For coil dimensions see Section C. Coil Special Features lank - No coil - No Special Feature Valve Special Features lank - None EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-3

24 ESV--O Proportional flow control valve Description The ESV--O is a -way, -position, pilot operated, poppet type, normally open, proportional flow, control, screw-in cartridge valve. Operation In the de-energized position, this valve allows free flow from port to port and restricts flow from port to port. In the energized position, flow is blocked from port to port, and free flow is allowed from port to port. The valve flow is proportional to the current applied to the coil. Functional Symbol Profile View RATINGS AND SPECIFICATIONS Performance data is typical with fluid at,8 cst (5 SUS) and 49 C ( F) Typical application pressure bar (3 psi) Cartridge endurance rating million cycles Cartridge fatigue pressure rating (NFPA/T.6. R-) bar (3 psi) Rated flow 7 5 psid 4 psid 34 3 psid Hysteresis Usgpm with dither Leakage (fully closed) 5 drops/min 3 psi Ambient operating temperature -3 to 9 C (- to 94 F) Maximum oil temperature C (48 F) Maximum internal coil temperature C (39 F) Nominal supply voltage /4V Current to fully close valve 8-9 ma (V coil), 4-45 ma (4V coil) Weight cartridge only Cartridge only.4 Kg (.5 lbs) Fluids All general purpose hydraulic fluids such as: MIL-H-566, SAE, SAE, etc. Filtration Cleanliness code 8/6/3 Cavity C-- Seal Kit (una-n), (Viton ) Viton is a registered trademark of E.I. DuPont Flow - USgpm Pressure Drop - PSID Flow - USgpm A C Current - Amps Pressure Differential A - 3 psi - psi C - 5 psi -4 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

25 Model Code ESV--O ESV - X - - X XXXX - XXX X X X XX - XX Function ESV - Proportional flow control Size - Size 3 Seal Material lank - una N V - Viton 4 Style - Normally Open 5 Housing Material lank - Cartridge only A - Aluminum 6 Port Size CODE PORT SIZE HOUSING NUMER Aluminum Cartridge Only 4G /" SPP -68 4GU /" SPP -66 6G 3/4" SPP -67 6GU 3/4" SPP -65 T SAE -664 TU SAE -664 T SAE TU SAE See section J for housing details. 7 Coil Voltage Coil Series - No coil - VDC lank - No Coil X - X Series, W 4-4 VDC 8 Type of Power lank - No coil D - DC w/o diode - DC with diode 9 Connection Type lank - No Coil G - ISO 44 DIN 4365 N - Deutsch (DC Only) P - Conduit Q - Spade terminals W - Leadwire Y - Amp JR (DC Only) For coil dimensions see Section C. Coil Special Features lank - No coil - No Special Feature Valve Special Features lank - None EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-5

26 ESV--C Proportional flow control valve Description The ESV--C is a -way, -position, pilot operated, poppet type, normally closed, proportional flow control, screw-in cartridge valve. Operation In the de-energized position, this valve blocks flow from port to port and free flow is allowed from port to port. In the energized position, flow from port to port is restricted while free flow is allowed from port to port. The valve flow is proportional to the current applied to the coil. Functional Symbol Profile View RATINGS AND SPECIFICATIONS Performance data is typical with fluid at,8 cst (5 SUS) and 49 C ( F) Typical application pressure bar (3 psi) Cartridge endurance rating million cycles Cartridge fatigue pressure rating (NFPA/T.6. R-) bar (3 psi) Rated flow psid 8 5 psid 4 psid Hysteresis Usgpm with dither Leakage (fully closed) 5 drops/min 3 psi Ambient operating temperature -3 to 9 C (- to 94 F) Maximum oil temperature C (48 F) Maximum internal coil temperature C (39 F) Nominal supply voltage /4V Current to fully open valve 8-9 ma (V coil), 4-45 ma (4V coil) Weight cartridge only Cartridge only.3 Kg (.48 lbs) Fluids All general purpose hydraulic fluids such as: MIL-H-566, SAE, SAE, etc. Filtration Cleanliness code 8/6/3 Cavity C-- Seal Kit (una-n), (Viton ) Viton is a registered trademark of E.I. DuPont Flow - USgpm Pressure Drop - PSID Flow - USgpm A Current - Amps Pressure Differential A - psi - 5 psi -6 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

27 Model Code ESV--C ESV - X - C - X XXXX - XXX X X X XX - XX Function ESV - Proportional flow control Size - Size 3 Seal Material lank - una N V - Viton 4 Style - Normally Closed 5 Housing Material lank - Cartridge only A - Aluminum 6 Port Size CODE PORT SIZE HOUSING NUMER Aluminum Cartridge Only 4G /" SPP -68 4GU /" SPP -66 6G 3/4" SPP -67 6GU 3/4" SPP -65 T SAE -664 TU SAE -664 T SAE TU SAE See section J for housing details. 7 Coil Voltage Coil Series - No coil - VDC lank - No Coil X - X Series, W 4-4 VDC 8 Type of Power lank - No coil D - DC w/o diode - DC with diode 9 Connection Type lank - No Coil G - ISO 44 DIN 4365 N - Deutsch (DC Only) P - Conduit Q - Spade terminals W - Leadwire Y - Amp JR (DC Only) For coil dimensions see Section C. Coil Special Features lank - No coil - No Special Feature Valve Special Features lank - None EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-7

28 EFV--O Proportional flow control valve, normally open, spool type Description The EFV--O is a normally open, unidirectional, uncompensated, spool type, two way, proportional flow control, screw-in cartridge valve. Operation The valve is controlled by current supplied to the coil. At zero current, the valve is fully open from port to port 3. At 5 to 6 ma (V coil) the valve is fully closed. Port is used for pressure balancing the spool and armature and must be blocked in all cases. The maximum intended pressure drop is 3 PSID. At pressure drops above 3 PSID, almost no increase in flow is obtained. The intended flow direction is from port to port 3. Operation of the valve with flow from port 3 to port will produce flow vs current and flow vs pressure drop curves that are significantly different from those obtained with flow from port to port 3. Since the spool and armature are pressure balanced, the operating pressure does not affect the operating characteristics of the valve. The operating point of the valve is determined only by current, pressure drop and temperature. Functional Symbol 3 Profile View 3 RATINGS AND SPECIFICATIONS Performance data is typical with DTE 4 hydraulic fluid at F Typical application pressure Cartridge endurance rating bar (3 psi) million cycles Cartridge fatigue pressure rating (NFPA/T.6. R-) bar (3 psi) Rated maximum flow at 6 PSID Flow rating A 5. L/min (4 USgpm) Flow rating 3. L/min (8 USgpm) Flow rating C 37.9 L/min ( USgpm) Hysteresis USgpm with 4Hz PWM driver Leakage (fully closed) 97 cm3/min ( in3/min) at 3 PSID Ambient operating temperature -3 to 9 C (- to 94 F) Maximum oil temperature C (48 F) Maximum internal coil temperature C (39 F) Nominal supply voltage /4 V Current to fully close valve 5-6 ma (V coil), 75-8 ma (4V coil) Recommended PWM frequency - 4 Hz Coil resistance at C (68 F) 4.7 ω (V), 9. ω (4V) Mass Cartridge only,37 kg (.8 lb) Cartridge with coil and end nut,73 kg (.6 lb) Fluid All general purpose hydraulic oils such as: MIL-H-566, SAE, SAE, DTE 4, etc. Filtration Cleanliness code 8/6/3 Cavity C--3 Seal kit 995- (una-n) 996- (Viton ) Viton is a registered trademark of E.I. DuPont Note Port is unused and must be plugged. -8 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

29 Flow % Performance Curves EFV--O Cartridge Only Max. Flow vs Pressure Drop Flow rating "A" (Valve fully open) Max. Flow vs Pressure Drop Flow rating "" (Valve fully open) USgpm Flow - Pressure Drop - bar Pressure Drop - PSID L/min Flow - USgpm Flow - Pressure Drop - bar Pressure Drop - PSID L/min Flow - Max. Flow vs Pressure Drop Flow rating "C" (Valve fully open) Flow vs. Current USgpm Flow - Pressure Drop - bar Pressure Drop - PSID L/min Flow Note To determine operating characteristics for the flow rating selected, at a specific differential pressure, first determine maximum flow from upper curve at the differential pressure value. This will be the % flow flow on the lower curve. Parameters: 4 Hz PWM Current - ma EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-9

30 Model Code EFV--O EFV * * * * *** *****E** Function EFV - Electro Proportional Flow Control Valve Size - Size 3 Seals N - una-n V - Viton 4 Logic - Normally Open Dimensions mm (inch) Torque cartridge in housing S Nm (5-55 ft. lbs) A Nm (35-4 ft. lbs) 5 Flow Rating A PSID PSID C - 6 PSID 6 leed Screw and Manual Override - No core tube special features S - Screw-in type manual override 7 8 Material Port Code Code* 3,8 (.9) 3, (.6) 9, (.75) Description Part Number No manifold block A 3 Aluminum, Light Duty /8 SPP 6T Aluminum, Light Duty 5666 SAE 6 G Aluminum, /4 SPP G Aluminum, 3/8 SPP H Aluminum, SAE H Aluminum, SAE S G Steel, /4 SPP G Steel, 3/8 SPP T Steel, SAE T Steel, SAE Note: oth the manifold and port plug are required. 9 Coil Model Code* E-Series Coils See Section C. * These model digits will not be stamped on the valve. 44, (.74) 86,4 (3.4) Special Features - None (Only required when valve has special features, omitted if. ) 8,7 (4.8) 64, (.5) 47, (.86) 3 Note: EFV- with DIN-4365 connector shown. Note: Port is unused and must be plugged. Note - S type manual override shown -3 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

31 EFV--C Proportional flow control valve, normally closed, spool type Description The EFV--C is a normally closed, unidirectional, uncompensated, spool type, two way, proportional flow control, screw-in cartridge valve. Operation The valve is controlled by current supplied to the coil. At zero current, the valve is fully closed from port 3 to port. At 5 ma (V coil) the valve is considered fully open. This is the maximum intended current level for use in applications. Port is used for pressure balancing the spool and armature and must be blocked in all cases. The maximum intended pressure drop is 3 PSID. At pressure drops above 3 PSID, almost no increase in flow is obtained. The intended flow direction is from port 3 to port. Operation of the valve with flow from port to port 3 will produce flow vs current and flow vs pressure drop curves that are significantly different from those obtained with flow from port 3 to port. Since the spool and armature are pressure balanced, the operating pressure does not affect the operating characteristics of the valve. The operating point of the valve is determined only by current, pressure drop and temperature. Functional Symbol 3 Profile View 3 RATINGS AND SPECIFICATIONS Performance data is typical with DTE 4 hydraulic fluid at F Typical application pressure Cartridge endurance rating bar (3 psi) million cycles Cartridge fatigue pressure rating (NFPA/T.6. R-) bar (3 psi) Rated maximum flow at 6 PSID Flow rating A 5. L/min (4 USgpm) Flow rating 3. L/min (8 USgpm) Flow rating C 37.9 L/min ( USgpm) Hysteresis USgpm with 4Hz PWM driver Leakage (fully closed) 97 cm3/min ( in3/min) at 3 PSID Ambient operating temperature -3 to 9 C (- to 94 F) Maximum oil temperature C (48 F) Maximum internal coil temperature C (39 F) Nominal supply voltage /4 V Current to fully close valve 5-6 ma (V coil), 75-8 ma (4V coil) Recommended PWM frequency - 4 Hz Coil resistance at C (68 F) 4.7 ω (V), 9. ω (4V) Mass Cartridge only,37 kg (.8 lb) Cartridge with coil and end nut,73 kg (.6 lb) Fluid All general purpose hydraulic oils such as: MIL-H-566, SAE, SAE, DTE 4, etc. Filtration Cleanliness code 8/6/3 Cavity C--3 Seal kit 995- (una-n) 996- (Viton ) Viton is a registered trademark of E.I. DuPont Note Port is unused and must be plugged. EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-3

32 Flow % Performance Curves EFV-*-C Cartridge Only Max. Flow vs Pressure Drop Flow rating "A" (Zero Current) Max. Flow vs Pressure Drop Flow rating "" (Zero Current) USgpm Flow - Pressure Drop - bar Pressure Drop - PSID L/min Flow - USgpm Flow - Pressure Drop - bar Pressure Drop - PSID L/min Flow - Max. Flow vs Pressure Drop Flow rating "C" (Zero Current) Flow vs. Current USgpm Flow - Pressure Drop - bar Pressure Drop - PSID L/min Flow Note To determine operating characteristics for the flow rating selected, at a specific differential pressure, first determine maximum flow from upper curve at the differential pressure value. This will be the % flow on the lower curve. Parameters: 4 Hz PWM Current - ma -3 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

33 Model Code EFV--C EFV * C * * * *** *****E** Function EFV - Electro Proportional Flow Control Valve Size - Size 3 Seals N - una-n V - Viton 4 Logic C - Normally Closed Dimensions mm (inch) Torque cartridge in housing S Nm (5-55 ft. lbs) A Nm (35-4 ft. lbs) 5 Flow Rating A PSID PSID C - 6 PSID 6 leed Screw and Manual Override - No core tube special features S - Screw-in type manual override 7 8 Material Port Code Code* 3,8 (.9) 3, (.6) 9, (.75) Description Part Number No manifold block A 3 Aluminum, Light Duty /8 SPP 6T Aluminum, Light Duty 5666 SAE 6 G Aluminum, /4 SPP G Aluminum, 3/8 SPP H Aluminum, SAE H Aluminum, SAE S G Steel, /4 SPP G Steel, 3/8 SPP T Steel, SAE T Steel, SAE Note: oth the manifold and port plug are required. 9 Coil Model Code* E-Series Coils See Section C. * These model digits will not be stamped on the valve. 44, (.74) 86,4 (3.4) Special Features - None (Only required when valve has special features, omitted if. ) 8,7 (4.8) 64, (.5) 47, (.86) 3 Note: EFV- with DIN-4365 connector Note: Port is unused and must be plugged. Note - S type manual override shown shown. EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-33

34 EFV--O Proportional flow control valve, normally open, spool type Description The EFV--O is a normally open, unidirectional, uncompensated, spool type, two way, proportional flow control, screw-in cartridge valve. Operation The valve is controlled by current supplied to the coil. At zero current, the valve is fully open from port to port 3. At 5 to 6 ma (V coil) the valve is fully closed. Port is used for pressure balancing the spool and armature and must be blocked in all cases. The maximum intended pressure drop is 3 PSID. At pressure drops above 3 PSID, almost no increase in flow is obtained. The intended flow direction is from port to port 3. Operation of the valve with flow from port 3 to port will produce flow vs current and flow vs pressure drop curves that are significantly different from those obtained with flow from port to port 3. Since the spool and armature are pressure balanced, the operating pressure does not affect the operating characteristics of the valve. The operating point of the valve is determined only by current, pressure drop and temperature. Functional Symbol 3 Profile View 3 RATINGS AND SPECIFICATIONS Performance data is typical with DTE 4 hydraulic fluid at F Typical application pressure bar (3 psi) Cartridge endurance rating million cycles Cartridge fatigue pressure rating (NFPA/T.6. R-) bar (3 psi) Rated maximum flow at 3 PSID Flow rating A 95 L/min (5. USgpm) Flow rating 4 L/min (7.5 USgpm) Hysteresis USgpm with 4Hz PWM driver Leakage (fully closed) cm 3 /min (5-3 in 3 /min) at 3 PSID Ambient operating temperature -3 to 9 C (- to 94 F) Maximum oil temperature C (48 F) Maximum internal coil temperature C (39 F) Nominal supply voltage /4 V Current to fully close valve 5-6 ma (V coil), 75-8 ma (4V coil) Recommended PWM frequency - 4 Hz Coil resistance at C (68 F) 4.7 Ω (V), 9. Ω (4V) Mass Cartridge only,37 kg (.8 lb) Cartridge with coil and end nut,73 kg (.6 lb) Fluid All general purpose hydraulic oils such as: MIL-H-566, SAE, SAE, DTE 4, etc. Filtration Cleanliness code 8/6/3 Cavity C--3 Seal kit 997- (una-n) 997- (Viton ) Viton is a registered trademark of E.I. DuPont Note Port is unused and must be plugged. -34 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

35 Flow % Performance Curves EFV-- Cartridge Only Max. Flow vs Pressure Drop Flow rating A (Zero Current) Max. Flow vs Pressure Drop Flow rating (Zero Current) Flow - USgpm Pressure Drop - bar Flow - L/min Flow - USgpm Pressure Drop - bar Flow - L/min Pressure Drop - PSID Pressure Drop - PSID Flow vs Current Current - ma Note To determine operating characteristics for the flow rating selected, at a specific differential pressure, first determine maximum flow from upper curve at the differential pressure value. This will be the % flow flow on the lower curve. Parameters: 4 Hz PWM EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-35

36 Model Code EFV--O EFV * * * * *** ***** E ** Function 5 Flow Rating EFV - Electro Proportional Flow Control Valve A PSID PSID Size - Size 3 Seals N - una-n V - Viton 4 Logic - Normally Open Dimensions mm (inch) Torque cartridge in housing S Nm (- ft. lbs) A - 8- Nm (8-9 ft. lbs) 6 leed Screw and Manual Override - No core tube special features S - Screw-in type manual override 86,3 (3.4) 44, (.74) 3,8 (.9) 9, (.75) 7 8 Material Port Code Code* Description Part Number No manifold block A 4G Aluminum, / SPP G Aluminum, 3/4 SPP -686 T Aluminum, SAE -664 T Aluminum, SAE S 4G Steel, / SPP G Steel, 3/4 SPP T Steel, SAE -67 T Steel, SAE Note: oth the manifold and port plug are required. 9 Coil Model Code* E-Series Coils See Section C. * These model digits will not be stamped on the valve. Special Features - None (Only required when valve has special features, omitted if. ).6 64, (.5) Note EFV- with DIN-4365 connector shown. 68,6 (.7) 3 Note Port is unused and must be plugged. -36 EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7

37 EFV--C Proportional flow control valve, normally closed, spool type Description The EFV--C is a normally closed, unidirectional, uncompensated, spool type, two way, proportional flow control, screw-in cartridge valve. Operation The valve is controlled by current supplied to the coil. At zero current, the valve is fully closed from port 3 to port. At 5 ma (V coil) the valve is considered fully open. This is the maximum intended current level for use in applications. Port is used for pressure balancing the spool and armature and must be blocked in all cases. The maximum intended pressure drop is 3 PSID. At pressure drops above 3 PSID, almost no increase in flow is obtained. The intended flow direction is from port 3 to port. Operation of the valve with flow from port to port 3 will produce flow vs current and flow vs pressure drop curves that are significantly different from those obtained with flow from port 3 to port. Since the spool and armature are pressure balanced, the operating pressure does not affect the operating characteristics of the valve. The operating point of the valve is determined only by current, pressure drop and temperature. Functional Symbol 3 Profile View 3 RATINGS AND SPECIFICATIONS Performance data is typical with DTE 4 hydraulic fluid at F Typical application pressure bar (3 psi) Cartridge endurance rating million cycles Cartridge fatigue pressure rating (NFPA/T.6. R-) bar (3 psi) Rated maximum flow at 3 PSID Flow rating A 55L/min (4.3 USgpm) Flow rating 77 L/min (.6 USgpm) Hysteresis USgpm with 4Hz PWM driver Leakage (fully closed) cm 3 /min (5-3 in 3 /min) at 3 PSID Ambient operating temperature -3 to 9 C (- to 94 F) Maximum oil temperature C (48 F) Maximum internal coil temperature C (39 F) Nominal supply voltage /4 V Current to fully close valve 5-6 ma (V coil), 75-8 ma (4V coil) Recommended dither frequency - 4 Hz Coil resistance at C (68 F) 4.7 Ω (V), 9. Ω (4V) Mass Cartridge only,37 kg (.8 lb) Cartridge with coil and end nut,73 kg (.6 lb) Fluid All general purpose hydraulic oils such as: MIL-H-566, SAE, SAE, DTE 4, etc. Filtration Cleanliness code 8/6/3 Cavity C--3 Seal kit 997- (una-n) 997- (Viton ) Viton is a registered trademark of E.I. DuPont Note Port is unused and must be plugged. EATON Vickers Screw-In Cartridge Valves V-VLOV-MC-E4 September, 7-37