Process Valve/Series VN

Transcription

1 For eneral Purpose /3 Port Valve Process Valve/Series VN The cylinder operation by external pilot air Can be operated with pressure differential zero. Wide variations Series VN For controlling pneumatic systems or air-hydro circuits. balance poppet that enables air to flow forward or backward. Series VN For controlling various fluids Can operate with a wide range of fluids, such as air, water, oil, gas, vacuum, etc., by selecting the body material and the seal material. Series VNC For controlling the cutting oils and coolants used in machine tools. Metal seals are used for preventing foreign matter such as cutting chips from entering. Maximum operating pressure: 0.5MPa, MPa Series VNH For controlling the high pressure cutting oils and coolants used in machine tools. Maximum operating pressure: 3.5MPa, 7MPa Series VN For steam control PTFE seal adopted With indicator (Option) 4.-

2 Series VN Process Valve zseries Valve Style Process valve Series VN N.C. N.O. C.O. Process valve Series VN Coolant valve Series VNC Coolant valve for high pressure Series VNH Steam valve Series VN N.C. N.O. C.O. N.C. N.O. N.C. N.C. N.O. pplicable fluid Water ir Oil Low vacuum ( Torr) Coolant Steam Flange Page P.4.-3 to P.4.-0 P.4.- to P.4.-8 P.4.-9 to P.4.-7 P.4.-8 to P P to P

3 Compressed ir Port Valve for Comressed ir and ir-hydro Circuit Control Process Valve Series VN Universal Port Valve Exclusively for air pressure system and air-hydro circuit control The cylinder operation by external pilot air The balance poppet permits normal and reverse flow. ir pressure circuit: pplication examples Operation from 0 MPa is possible Wide variations N.C., N.O., C.O., are available. Screw-in styles, 6 to 50, are standardized. ctuator stop valve Emergency stop, intermediate stop, inching ctuator skip valve Terminal deceleration, intermediate deceleration, accelerative start ctuator exhaust valve High speed operation, highspeed exhaust ir motor driving valve ir blow valve Line stop valve Residual line pressure exhaust valve ir-hydro Operation capacity when used in air-hydro units This series can supplement the capacity of conventional air-hydro valve units. They are suited to operate large bore cylinders as well as to simultaneously operate mutliple cylinders and suspend their operation. Thus they can be used in the same as the convetional air-hydro units. Condition Supply Pressure Hydraulic fluid Load Piping length Piping dia. ir-hydro circuit: pplication example asic circuit 0.49MPa ISO V3 No load m VN 3/8(9 mm) CCVSO VN / (3 mm) CCVSO VN3 3/4(9 mm) VN4 (5 mm) Refer to est Pneumatics for further information on air-hydro. Caution When speed controller is mounted Connect a speed controller (Series S etc.) to port (cast in body )of VN (in order to protect the speed control valve from surges when cylinder operation is suspended, thus improving stopping accuracy) Caution Skip valve function Combination of or more valves of Series VN provides a skip valve function. Connect the skip valve to the port side of a stop valve as in the case of the speed control valve. 4.-3

4 VN How to Order C Seal material NR seal FPM seal EPR seal Refer to Table q for application. racket Without bracket With bracket Only valve size,, 3, 4. ir operated VN 0 5 External pilot solenoid VN 5 T Manual override Valve size Orifice Symbol size (mm) ø0 ø5 ø0 ø5 ø3 ø40 ø50 Note) Only air operated type. Valve style Symbol 3 Note) N.C. N.O. C.O. Port Symbol size RC(PT) Rated voltage 00V C 50/60Hz 00V C 50/60Hz 3 0V C 50/60Hz 4 0V C 50/60Hz 5 4V C 6 V C 7 40V C 50/60Hz 9 Other Option Valve size to 4 Valve size 5 to 7 Table q pplicable fluids pplicable fluids (Valve material: NR seal) ir(standard dry) CO (0.7 MPa Max.) Nitrogen gas(n) Freon, 3, 4, Turbine oil(40 to 00 cst), Hydraulic fluid C (Valve material: FPM seal) (Valve material: EPR seal) rgon, Helium, Turbine oil, Hydraulic fluid (99 C) CO (0.7 MPa max.) Caution Contact SMC on other fluids, operating conditions, etc. Electrical entry/indicator light and surge voltage suppressor rommet S rommet with surge voltage suppressor E rommet terminal EZ rommet terminal with indicator light and surge suppressor T Conduit terminal TZ Conduit terminal with indicator light and surge suppressor IN connector Z IN connector with indicator light and surge suppressor rommet S rommet with surge voltage suppressor C Conduit T Conduit terminal TS TZ Conduit terminal with surge voltage suppressor Conduit terminal indicator light and surge suppressor TL Conduit terminal with indicator light. IN connector IN connector with indicator light L Except for rated voltage 6, 7, 9. Valve size to 4 Valve size 5 to

5 VN External pilot solenoid valve Symbol Style Valve ir operated P ir operated valve N.C. N.O. C.O. Normally closed Normally open ouble acting P P Port Size VN VN4-5 VN5-3 4 VN6-40 VN7-50 Valve Specifications Orifice size ø (mm) Flow rate Weight (kg) Effective area Cv ir operated Solenoid (mm ) Fluid Refer to table q on page to 60 C Fluid () 5 to 99 C temperature / C () (Only air operated) mbient temperature Proof pressure Operating pressure range Pressure range 5 to 50 C (ir operated: 60 C) ().5MPa 0 tompa 0. to 0.7MPa External pilot air Lubrication Temperature Not required (Use turbine oil No. (ISO V3) if lubricated) () 5 C to 50 C(ir operated: 60 C) Note ) No freezing Note ) Lubrication is not allowed in case of seal material EPR. External pilot solenoid P P P Pilot Solenoid Valve Specifications Pilot solenoid valve Electrical entry Coil rated voltage(v) llowable voltage Coil insulation Temperature rise pparent power Power consumption Manual override C(50/60Hz) C C Inrush Holding C 6 to 5 SF4- -3 rommet, rommet terminal Conduit terminal IN connector 3 to 50 VO30-00 rommet, Conduit, IN connector Others(Option) 00V, 00V, Others(Option) 4V, Others(Option) 5% to +0%(rated voltage) o Class or equivalent (30 C) 35 C (pplication of rated voltage) 70 C (pplication of rated voltage) 5.6V(50Hz), 5.0V(60Hz) V(50Hz), 0.5V(60Hz) 3.4V(50Hz),.3V(60Hz) 7.5V(50Hz), 6V(60Hz).8W 4.8W Non-locking push style Others (Option) Non-locking push style 4.-5

6 VN Flow Characteristics ir How to Read The raph In the sonic flow region: For a flow of 6000 (l/min) VN4mmm(Orificeø5)...P 0.4MPa VN4mmm(Orificeø0)...P 0.8MPa VN4mmm(Orificeø5)...P 0.5MPa How to Calculate Flow <ir and other gases> qequation in the domain of subsonic flow Calculation by Cv factor P(P+0.03) 73 Q=4080 Cv 73+θ l /min (NR) Calculation by effective area P(P+0.03) 73 Q=6 S 73+θ l /min (NR) wequation in the domain of sonic flow Calculation by Cv factor 73 Q=040 Cv (P+0.03) 73+θ l /min (NR) Calculation by effective area 73 Q=3 S (P+0.03) 73+θ l /min (NR) Turbine oil (ISO V3) How to Read The raph In case of a flow of oil 00 l/min: VN4 (Orificeø4)... P 0.035MPa VN4 (Orificeø0)... P 0.08MPa VN4 (Orificeø5)... P 0.MPa How to Calculate Flow Calculation by Cv factor Q=4. Cv 0. P...l/min Calculation by effective area 0. P Q=0.8 S...l/min Note) Calculation error of fluid with viscosity of 50 cst or less will be very small. Symbol Q : Flow rate (ir and other gases l/min (NR)) (Water and other liquids l/min) P: Pressure differential (P-P) P : Upstream pressure (MPa) P : ownstream pressure (MPa) θ : Temperature of air and other gases ( C) S : Effective area (mm ) S 8Cv Cv : Cv factor ( / ) : Specific gravity ( / ) ir/water= 4.-6

7 VN 6, 8, Main Port EZ, TZ, Z: 9mm longer 4.-7

8 VN 0, 5, 0, 5 EZ, TZ, Z: 9mm longer -0-5 VN3-0 VN4-5 Main Port C E F H I J K L M N P Q R S T U , 40, 50 VN5-3 VN6-40 VN7-50 Main Port 4 Pilot port C E F H I J K L M

9 VN Construction Component Parts No. escription Material Note q ody luminium alloy Platinum silver painted w Cover assembly luminium alloy Platinum silver painted e () Plate assembly luminium alloy Valve material(nr, FPM, EPR) r () Valve element luminium alloy Valve material(nr, FPM, EPR) t Piston assembly luminium alloy y Travel spring Stainless steel u Return spring Piano wire i Pilot solenoid valve Note ) Parts e, r are for selection of valve composition. Operation Principles 0, (N.C.) When the pilot solenoid valve is not energized (or when air is exhausted from the P port of the air operated style),the valve element linked to the piston is closed by the return spring. When valve element opens When the pilot solenoid valve is energized (or when pressuried air enters through the P port of the air operated style), the pilot air that has entered under the piston moves it upward to open the valve element. When valve element opens When the power to the pilot solenoid valve is turned off (or when air is exhausted from the P port of the air operated style), the pilot air under the piston is exhausted, and the return spring closes the valve element. 0, (N.O.) In contrast with the N.C., when the power to the pilot solenoid valve is turned off (or when air is exhausted from the P port of the air operated style), the valve is held open by the return spring. When the pilot solenoid valve is energized (or when pressurized air enters through the P port of the air operated style), the valve element closes. 03 (C.O.) The valve element of the C.O. type, which has no return spring, is in an arbitary position when air is exhausted through the P and P ports. When pressurized air enters the P port (exhaust from the P port), the valve element opens, and it closes when pressurized air enters the P port (exhaust from the P port). Replacement Parts No. e r i Plate assembly escription Valve disc (Valve disc a'ssy for 5-50) Pilot solenoid valve Valve material Valve material NR FPM EPR NR FPM EPR -6, 8, 0 VN-3 VN-3 VN-3C VN-4 VN-4 VN-4C -0, 5 VN-3 VN-3 VN-3C VN-4 VN-4 VN-4C VN3-0 VN3-3 VN3-3 VN3-3C VN3-4 VN3-4 VN3-4C SF4- -3 (Refer to p.4.-0 for details) Part No. VN4-5 VN4-3 VN4-3 VN4-3C VN4-4 VN4-4 VN4-4C VN5-3 VN5-3 VN5-3 VN5-3C VN5-4 VN5-4 VN5-4C VN6-40 VN6-3 VN6-3 VN6-3C VN6-4 VN6-4 VN6-4C VN7-50 VN7-3 VN7-3 VN7-3C VN7-4 VN7-4 VN7-4C VO30-00 (Refer to p.4.-0 for details) 4.-9

10 VN How to Order Pilot Solenoid Valve Valve size,, 3, 4 SF4 Z 3 Valve size 5, 6, 7 VO30-00 Coil rated voltage 00V C 50/60Hz 00V C 50/60Hz 3 0V C 50/60Hz 4 0V C 50/60Hz 5 4V C 6 V C 7 40V C 50/60Hz 9 Other Option S E EZ T TZ Z Manual override/classification Non-locking push style Non-locking extended style Locking slotted style Option Electrical entry/indicator light and surge voltage suppressor. rommet rommet with surge voltage suppressor rommet terminal rommet terminal with indicator light and surge voltage suppressor Conduit terminal Conduit terminal with indicator light and surge voltage IN connector IN connector with indicator light and surge voltage suppressor Coil rated voltage 00V C 50/60Hz 00V C 50/60Hz 3 0V C 50/60Hz 4 0V C 50/60Hz 5 4V C 6 V C 7 40V C 50/60Hz 9 Other Option C T () L Surge voltage suppressor None S Surge voltage suppressor (Except for L) Electrical entry rommet Conduit Conduit terminal IN connector IN connector with indicator light Option Note ) When the electrical entry is T, the pilot solenoid valve parts are as follows: VO30-00 T -X30 Indicator light and surge voltage suppressor Coil rated voltage Precautions e sure to read before handling. Refer to p.0-33 for Safety Instructions and p.0-37 to 0-40 for common precautions. External Pilot Caution Pilot port piping Please arrange P and P piping as follows according to the model. Port P P 0 External pilot leed port 0 03 leed port External pilot External pilot External pilot Pilot exhaust Pilot exhaust It is recommended to mount a silencer in the EXH port and the bleed port for noise reduction and dust entry prevention. Piping Caution To use the piping with a high temperature fluid, use heat resistant fittings and tubes. (Self-align fittings, Teflon tube copper pipe, etc.) Teflon is a registered trademark of upont. Use with ir-hydro Unit Warning Piping When operation is suspended, surge pressure will be generated between the cylinder and. To directly thread in the cylinder, use durable fittings (SUS squate nipples etc,) instead of ductile iron fittings (JIS 30) or steel pipe fittings (JIS 30). When is to be installed away from the cylinder, use a high-pressure rubber hose (JIS 6349) instead of steel pipe as much as possible. Caution ir bleeding Valves of Series VN have no air bleeding port. leed air from the middle piping. leeding by a vaccum pump is more effective. Hydraulic fluid Turbine oil, rade, ISO V3, with petroleum hydraulic fluid is recommended. 3Speed control valve The combination shown in the following table is recommended to bring the best of Series VN. (Piping: JIS K 6349 high pressure hose) Combination of Series VN and flow control valve (Series S) VN S Piping (I..) 3 8 (ø9.5) (ø.7) 3 4 (ø9.) (ø5.4) 4 (ø3.8) (ø38.) (ø50.8) 4.-0

11 Port Valve for Flow Control Process Valve Series VN Extensive applicable fluids Proper selection wilh body and sealing materials permits application with a wide variety of fluids such as air, water, oil, gas and vaccum. The cylinder operated by external pilot air Many variations The N.C, N.O, and C.O. types have made the screw-in styles (6 to 50) and flanges (3F to 50F) into a series. ir operated External pilot solenoid Selection procedures Fluid Refer to Table q to check that the desired fluid is applicable. Select the body and sealing materials that best suit the fluid to be used. Flow characteristics (ir and water) To find the flow rate of air or water, refer to the table of flow rate charactertics on page Use the flow rate calculation equation to find the exact answer. lthough the flow rate is the same, the operating pressure differs according to the valve size. Therefore, select the proper valve size from applicable valves. Refer to Table w to select the port size of the screw-in styles (6 to 50) and flanges (3F to 50F). Construction Select the air operated or external pilot solenoid styles. Valves come in N.C. (normally closed), N.O. (normally open), C.O. (double acting), and N.C.MPa (normally closed) types. Select the proper one according to the operating conditions. Supply voltage and electrical entry (External pilot solenoid) Select C or C power supply, and select the proper method of electrical entry according to Table e. Table q pplicable fluid check list ody material Seal material Fluid ir (Standard, ry) Low vaccum ( torr) Carbon dioxide (CO, 0.7MPa or less) Carbon dioxide (CO, 0.7 to MPa ) Nitrogen gas (N) rgon Helium Water (Standard, up to 60 C) Water (up to 99 C only air operated) Turbine oil Spindle oil Kerosene as oil Fuel oil rake oil () Silicone oil Naphtha Ethyl alcohol Ethylene glycol (up to 80 C) oiler water Copper free C6: Standard luminum: L Stainless steel: S NR : FPM : EPR : C NR : FPM : EPR : C NR : FPM : EPR : C Caution When fluid permits application of multiple body and sealing material, select the best ones according to the ambient environment (FPM or EPR seal material for high temperature) and other conditions (corrosion resistance and viscosity). Contact SMC on other fluids, operating conditions, etc.. Note ) Some brake oils are not allowed. Table w Valve size, port size combinations Valve size F 40 40F 50 50F Table e Combination of electrical entry and light/surge voltage suppressor Valve size Electrical entry Indicator light and surge suppressor E C T L S Z L Manual override,, 3, 4 5, 6, 7 (Only ) (Except for ) (Except for L) (Only T) (Only T) 4.-

12 VN How to Order C Seal material NR seal FPM seal EPR seal Refer to table q for application. racket None With bracket Only valve size,, 3, 4 ody option Standard V Vaccum pilot S Stainless steel body L luminium body Valve size: to 7 Threaded port only ir operated VN 0 5 External pilot solenoid VN 5 T Valve size Valve style Rated voltage Symbol 00V C 50/60Hz Orifice V C 50/60Hz Symbol size Port Symbol size N.C. N.C. 3 0V C 50/60Hz (mm) N.O. C.O. 0.5MPa MPa 4 0V C 50/60Hz V C ø V C V C 50/60Hz Other Option ø ø5 ø ø5 ø4 ø0 ø6 ø5 ø ø3 ø ø3 ø8 ø40 ø8 ø40 ø33 ø50 ø33 ø50 Note ) Only air operated style F 40 40F 50 50F Table r pplicable pressure Pilot pressure Flange Flange Flange S E EZ T TZ Z S C T TS TZ TL L Manual override Electrical entry/indicator light and surge voltage suppressor rommet rommet with surge voltage suppressor rommet terminal rommet terminal with indicator light and surge suppressor Conduit terminal Conduit terminal with indicator light and surge suppressor IN connector IN connector with indicator light and surge suppressor rommet rommet with surge voltage suppressor Conduit Conduit terminal Conduit terminal with surge voltage suppressor Conduit terminal with indicator light and surge suppressor Conduit terminal with indicator light IN connector IN connector with indicator light Except for rated voltage 6, 7, 9. Valve size to 4 Valve size 5 to 7 Valve size to 4 Valve size 5 to 7 4.-

13 VN Symbol Style Option Specifications Vacuum pilot valve V (Valve size to 7) It is used when the valve is to be operated by the main vacuum in the absence of pressurized air. Valve Specifications Style Valve ir operated External pilot solenoid Valve ir operated N.C. N.O. C.O. Normally Normally ouble closed open ading Fluid Pressure range Pilot pressure range N.C. Normally closed 0 V P P P V P P Vacuum to 760 Torr to 400 Torr N.O. Normally open 0 V P P P V VN3 4-0 VN3-0 VN4 4-5 VN4-5 VN5 4-3 VN5-3 VN5 4-3F VN5-3F VN VN6-40 VN6 4-40F VN6-40F VN VN7-50 VN7 4-50F VN7-50F Flange () Valve Specifications Pilot Solenoid Specifications Orifice size ø (mm) Flow rate Effective area Cv (mm ) ir operated Weight (kg) Note) The flange should be JIS 0 0K (ordinary style) or its equivalent. Fluids Water, Oil, ir, Vaccum, etc. Fluid 5 to 60 C () temperature 5 to 99 C () C (Water, oil etc. Only air operated) mbient temperature 5 to 50 C(ir operated type: 60 C) () Proof pressure.5mpa pplicable Low vacuum to 0.5MPa press. range 4 Low vacuum to MPa Press to 0.7MPa 0. to 0.5MPa See Table 4 on page P. External pilot air Pilot solenoid valve Electrical entry Coil rated voltage llowable voltage Coil insulation Temperature rise pparent power Power consumption Manual override C (50/60Hz) C C 3 Inrush Holding C External pilot solenoid Lubrication Not required (Use turbine oil No. (ISO V3), if lubricated.) () Temperature 5 to 50 C (ir operated: 60 C) () Note ) No freezing Note ) Lubrication is not allowed in case of seal material EPR to 5 3 to 50, 3F to 50F SF4- -3 VO30-00 rommet, rommet, rommet, Conduit, terminal, Conduit, terminal, IN connector, IN connector Others (Option) 00V, 00V, Others (Option) 4V, Others (Option) 5% to +0%of rated voltage Class or equivalent (30 C) 35 C (pplication of 70 C (pplication of rated voltage) rated voltage) 5.6V(50Hz), 5.0V(60Hz) V(50Hz), 0.5V(60Hz) 3.4V(50Hz),.3V(60Hz) 7.5V(50Hz), 6V(60Hz).8W 4.8W Non-locking push style Others (Option) Non-locking push style External pilot solenoid P P 4.-3

14 VN Flow Characteristics ir How to Read The raph In the sonic flow region: For a flow of 6000 (l/min) VN4 (Orifice ø5)...p 0.4MPa VN4 (Orifice ø0)...p 0.8MPa VN4 (Orifice ø5)...p 0.5MPa How to Calculate Flow <ir and other gases> qequation in the domain of subsonic flow Calculation by Cv factor P(P+0.03) 73 Q=4080 Cv 73+θ l /min (NR) Calculation by effective area P(P+0.03) 73 Q=6 S 73+θ l /min (NR) wequation in the domain of sonic flow Calculation by Cv factor 73 Q=040 Cv (P+0.03) 73+θ l /min (NR) Calculation by effective area 73 Q=3 S (P+0.03) 73+θ l /min (NR) Water How to Read The raph In case of a flow of 00 l/min: VN4 (Orifice ø5)... P to 0.035MPa VN4 (Orifice ø0)... P to 0.08MPa VN4 (Orifice ø5)... P to 0.MPa How to Calculate Flow Calculation by Cv factor Q=4. Cv 0. P...l/min Calculation by effective area 0. P Q=0.8 S...l/min Note) Calculation error of fluid with viscosity of 50cSt or less will be very small. Symbol Q : Flow rate (ir and other gases l/min(nr)) (Water and other fluids l/min) P: Pressure differential(pp) P : Upstream pressure (MPa) P : ownstream pressure (MPa) θ : Temperature of air and other gases ( C) S : Effective area(mm) S 8Cv Cv : Cv factor ( / ) : Specific gravity ( / ) ir/water= 4.-4

15 VN Standard 6, 8, MainPort EZ, TZ, and Z are 9mm longer Precautions e sure to read before handling. Refer to p.0-33 for Safety Instructions and p.0-37 to 0-40 for common precautions. External Pilot Caution Pilot port piping Please arrange P and P piping as follows according to the model. Standard Port 0 4 P P External pilot leed port leed port External pilot External pilot External pilot External pilot Pilot exhaust Vacuum pilot Port 0 V P leed port External P pilot 0 V External pilot leed port V External pilot Pilot exhaust It is recommended to mount a silencer in the EXH port and the bleed port for noise reduction and dust entry prevention. Vacuum Pilot Caution 0 When using the V N.C. vacuum pilot, maintain the specified pilot pressure by providing a tank with an appropriate capacity or by acquiring the pilot pressure from an area near the vacuum pump. P Vacuum pump Piping Caution To use the piping with a high temperature fluid, use heat resistant fittings and tubes. (Self-align fittings, Teflon tube copper pipe, etc.) Teflon is a registered trademark of upont. 4.-5

16 VN Standard 0, 5, 0, 5 EZ, TZ and Z are 9 mm longer. V-0 V-5 VN3 V-0 VN4 V-5 Main port C E F H I J K L M N P Q R S T U Vacuum pilot 0, 5, 0, 5 V-0 V-5 VN3 V-0 VN4 V-5 Main port C E F H I J K L M N P Q R S T U V W

17 VN 3, 40, 50 Standard/Vacuum pilot VN5-3 VN6-40 VN7-50 Main port Pilot port C E F H I J K L M Standard/Vacuum pilot Flange/3F, 40F, 50F VN5-3F VN6-40F VN7-50F Flange Pilot port C E F H 4 I J K L M

18 VN Construction Component Parts No. q w e r t y u escription ody Cover assembly Plate assembly Valve element Piston assembly Return spring Pilot solenoid valve Replacement Parts How to Order Pilot Solenoid Valve Valve size,, 3, 4 Valve size 5, 6, 7 Principles of Operation (The vacuum pilot style is excluded) Part No. No. escription VN3 VN4 VN5 VN5 4 VN6 VN6 4 VN7 VN7 4-6, 8, 0-0, , 3F -3, 3F -40, 40F -40, -40F -50, 50F -50, 50F NR VN-3 VN-3 VN3-3 VN4-3 VN5-3 VN5-3 VN6-3 VN6-3 VN7-3 VN7-3 Plate Valve e () material FPM VN-3 VN-3 VN3-3 VN4-3 VN5-3 VN5-3 VN6-3 VN6-3 VN7-3 VN7-3 assembly EPR VN-3C VN-3C VN3-3C VN4-3C VN5-3C VN5-3C VN6-3C VN6-3C VN7-3C VN7-3C () NR VN-4 VN-4 VN3-4 VN4-4 VN5-4 VN5-4-3 VN6-4 VN6-4-3 VN7-4 VN7-4-3 Valve Valve r () FPM VN-4 VN-4 VN3-4 VN4-4 VN5-4 VN5-4-3 VN6-4 VN6-4-3 VN7-4 VN7-4-3 element material EPR VN-4C VN-4C VN3-4C VN4-4C VN5-4C VN5-4C-3 VN6-4C VN6-4C-3 VN7-4C VN7-4C-3 u Pilot solenoid valve SF4- -3 VO30-00 Note ) In the casesy of body options "S" and "L", the materials of the parts Nos. e and r are as follows: (Example): VN-3 Note ) 3 to 50 come in valve etement assembly L: luminum, S: Stainless steel F F Material ronze luminium alloy rass (NR, FPM, EPR) luminium alloy Piano wire Note Clear coated Platinum silver painted Valve material (NR, FPM, EPR) Stainless steel or brass Note) Parts e and r are for selection of valve composition. The body option "S" is stainless steel, and "L" is aluminum. 0 4, 4 (N.C.) When the pilot solenoid valve u is not energized (or when air is exhausted from the P port of the air operated type), the valve element r linked to the piston t is closed by the return spring y. When valve element opens When the pilot solenoid valve is energized (or when pressurized air enters through the P port of the air operated style), the pilot air that has entered under the piston moves upward to open the valve element. When valve element closes When the power to the pilot solenoid valve is turned off (or when fluid is exhausted from the P port of the air operated style), the pilot air under the piston is exhausted, and the return spring closes the valve element. 0, (N.O.) In contrast wth the N.C., when the power to the pilot solenoid valve is turned off (or when air is exhausted from the P port of the air operated style), the valve is held open by the return spring. When the pilot solenoid valve is energized (or when pressurized air enters through the P port of the air operated style), the valve element closes. VN 03 (C.O.) The valve element for the C.O. type, which has no return spring, is in an arbitary position when air is exhausted through the P and P ports. When pressurized air enters the P port (exhaust from the P port), the valve element opens, and it closes when pressurized air enters the P port (exhaust from the P port). However all brackets of valve element of VN to 4 are made of stainless steel. (No need to add options "S" and "L".) 4.-8 SF4 Z 3 Coil rated voltage 00V C 50/60Hz 00V C 50/60Hz 3 0V C 50/60Hz 4 0V C 50/60Hz 5 4V C 6 V C 7 40V C 50/60Hz 9 Other Option S E EZ T TZ Z Manual override/classification Non-locking push style Non-locking extended style Locking slotted style Option Electrical entry and indicator light and surge voltage suppressor rommet rommet with surge voltage suppressor rommet terminal rommet terminal with indicator light and surge suppressor Conduit terminal Conduit terminal with indicator light and voltage IN connector IN connector with indicator light and surge suppressor VO30 00 V ody option Standard Vacuum pilot Coil rated voltage 00V C 50/60Hz 00V C 50/60Hz 3 0V C 50/60Hz 4 0V C 50/60Hz 5 4V C 6 V C 7 40V C 50/60Hz 9 Other Option Surge voltage suppressor S Electrical entry C T () L None With surge voltage suppressor (Except for L) rommet Conduit Conduit terminal IN connector IN connector with indicator light Option Note) The pilot solenoid valve parts No. of the electrical entry "T" is as follows: VO30-00 T -X30 Indicator light and surge voltage suppressor Coil rated voltage

19 ir Operated Valve/External Pilot Solenoid Coolant Valve Series VNC Cylinder operated by the external pilot External pilot solenoid ir operaed valve N.C. N.O. N.C. N.O. P P P P Wide selection of port sizes and variations Thread (6 to 50) Flange (3F to 80F) Low water hammer Max..MPa In case of VNC(N.C. 0.5MPa) Large flow capacity Cv0.7 to 00 Conditions: Piping length/30m Steel tube, full pressure/0.5mpa 4.-9

20 VNC How to Order Seal material NR seal FPM seal racket None With bracket Valve size:,, 3, 4. ir operated VNC 0 5 (Except for valve size 8, 9) External pilot solenoid VNC 5 T Manual override Valve size Symbol Orifice size (mm) ø7 ø5(ø) ø0(ø4) ø5(ø6) ø3(ø) ø40(ø8) ø50(ø33) ø65(ø45) ø80(ø56) ( ): In case of N.C.; MPa Valve style Symbol 4 N.C. N.O. N.C. 0.5MPa MPa MPa Symbol Port size F 4 Flange 40 40F Flange 50 50F Flange 65F Flange 80F Flange Rated voltage ir operated 00V C 50/60Hz 00V C 50/60Hz 3 0V C 50/60Hz 4 0V C 50/60Hz 5 4V C 6 V C 7 40V C 50/60Hz 9 Others Option Electrical entry/indicator light and surge voltage suppressor Nil ir operated rommet S rommet with surge voltage suppressor E rommet terminal EZ rommet terminal with indicator light and surge suppressor Valve size T Conduit terminal TZ Conduit terminal with indicator light and surge suppressor IN connector Z T TS TZ TL Valve size Valve size to 9 IN connector with indicator and surge suppressor Conduit terminal Conduit terminal with surge voltage suppressor Valve size Conduit terminal with indicator light and surge suppressor to 9 Conduit terminal with indicator light Rated voltage: except for 6, 7,

21 Pressure VNC Symbol Valve style Operation ir operated N.C. VNC 0 4 P N.O. VNC 0 P VNC -6 VNC -8 VNC -0 VNC 4-0 VNC -0 VNC 4-5 VNC -5 VNC3 4-0 VNC3-0 VNC4 4-5 VNC4-5 VNC5 4-3 VNC5-3 VNC5 4-3F VNC5-3F VNC VNC6-40 VNC6 4-40F VNC6-40F VNC VNC7-50 VNC7 4-50F VNC7-50F VNC84-65F VNC8-65F VNC94-80F VNC9-80F Flange () Orifice size ø (mm) Cv Flow rate Effe. area (mm ) Note)The flange should be JIS 0 0K (ordinary type) or equivalent. Weight (kg) External pilot ir operated solenoid VNC 0 4 VNC External pilot operated P P Valve Specifications pplicable fluids VNC Fluid temperature VNC mbient temperature Proof pressure pplicable VNC pressure range VNC 4 VNC 4 External VNC pilot air Lubrication Temperature No freezing allowed Table Operating pressure vs pilot pressure Coolant 5 to 60 C 5 to 60 C (If over 60 C, consult SMC on air operated style) 5 to 50 C(ir operated: 60 C).5MPa 0 to 0.5MPa 0 tompa 0.5 to 0.7MPa 0. to 0.7MPa Refer to table : Not required (ISO V3) 5 to 50 C (ir operated: 60 C) Pilot Solenoid Valve Specifications Pilot solenoid valve Electrical entry Coil rated voltage C (50/60 Hz) C llowable voltage range Coil insulation Temperature rise pparent power Power consumption Manual override In-rush C Holding C VNC VNC to 9 SF4- -3 VO30-00 T -X30 rommet rommet terminal Conduit terminal Conduit terminal IN Connector 00V, 00V, others (Option) 4V, others (Option) 5% to +0% of rated voltage Class or equivalent (30 C) 35 C or less 70 C or less 5.6V (50Hz) 5.0V (60Hz) 3.4V (50Hz).3V (60Hz) V (50Hz) 0.5V (60Hz) 7.5V (50Hz) 6V (60Hz).8W 4.8W Non-locking push style, Option Non-locking push style 4.-

22 VNC Flow Charactertistics How to Read The raph Pressure differential when using a coolant (flow rate 00l/min) VNC4 (Orifice size ø 5): P 0.035MPa, VNC (Orifice size ø 5): P 0.MPa How to Calculate Flow Calculation by Cv factor Q=4. Cv Q=0.8 S 0. P 0. P...l/min (Symbol) Q: Flow rate (l/min) P: Pressure differential(p-p) P: Primary pressure(mpa) P: Secondary pressure(mpa) S: Effective area (mm )S 8Cv Cv: Cv factor( / ) : Specific gravity ( / ) Water =...l/min Calculation by effective area Water Hammer Characteristics VNC (N.C. 0.49MPa) Conditions: Piping length/30m Steel tube, full pressure/0.49mpa VNC 4 (N.C. 0.97MPa) Conditions: Piping length/30m Steel tube, full pressure/0.97mpa How to Calculate Flow Speed v= X Q/d (Symbol) v: Flow speed(m/s) Q: Flow rate(l/min) d: Piping bore size(mm) 4.-

23 VNC Thread connection : 6, 8, 0 VNC -6 VNC -8 VNC EZ, TZ, Z: 9mm longer 4.-3

24 VNC Thread connection : 0, 5, 0, 5 MainPort VNC -0 VNC -5 VNC VNC C E F H J K L M N P Q R S T Thread connection : 3, 40, 50 VNC5-3 VNC6-40 VNC7-50 MainPort 4 Pilot port C E F H J K L

25 VNC Flange connection : 3, 40, 50 VNC5-3F VNC6-40F VNC7-50F pplicable flange Flange connection Pilot port : 65F, 80F C E F H J 4 K L VNC84-65F VNC9-80F 4 pplicable flange C E F H

26 VNC Construction N.C. (Spring return normally closed) When the pilot solenoid valve i is not energized (or when air is exhausted from the P/P port in case of the air operated style), the valve body r connected to the piston y is closed by the return spring u. When valve body opens When the pilot solenoid valve is energized (or when pressurized air enters through the P port of the air operated style), the pilot air that has entered under the piston moves upward to open the valve element. When valve body closes When the power to the pilot solenoid valve is turned off (or when fluid is exhausted from the P port of the air operated style), the pilot air under the piston is exhausted, and the return spring closes the valve element. Component Parts No. q w e r t y u i Note)If replacement parts for e or t are desired, rubber material should be designated per the table below. Replacement Parts No. e t i Replacement Parts/pplicable Flange No. e t 4.-6 escription ody assembly Cover assembly Plate assembly Valve body Valve cover Piston assembly Return spring Pilot solenoid valve Plate assembly escription Valve cover 3 to 50: O ring Valve seal Valve seal Pilot solenoid valve Plate assembly escription Valve seal Pilot solenoid valve NR FPM NR FPM NR FPM Material ronze luminium alloy Metal Stainless steel NR/FPM luminium alloy Piano wire VNC -6, 8, 0 VN-3C VN-3C SF4- -3 VNC8-65F Note Coated Platinum silver painted Valve seal, NR/FPM 3 to 50: O ring N.O. (Spring return normally open) In contrast with the N.C., when the pilot solenoid valve is not energized (or when air is exhausted from the P port of the air operated style), the valve body is open by the return sping. When the pilot solenoid valve is energized (or when pressurized air enters thorough the P port of the air operated style), the valve body closes. Part No. VNC VNC3 VNC4 VNC5 VNC6 VNC7-0, , 3F -40, 40F -50, 50F VN-3C VN-3C VN3-3C VN3-3C VN4-3C VN4-3C VN5-3C VN5-3C VN6-3C VN6-3C VN7-3C VN7-3C VN-C VN4-C VN-C VN4-C S S568-0 S568-0 VO30-00 T -X30 (Refer to How to Order on p.4.-7) Part No. VNC9-80F VN8-3C VN9-3C VN8-3C VN9-3C VO30-00 T -X30(Refer P.4.-7for How to Order)

27 VNC How to Order Pilot Solenoid Valve Valve size SF4 Z 3 Valve sizes to 9 VO30-00 T X30 Coil rated voltage Option 00V C 50/60Hz 00V C 50/60Hz 0V C 50/60Hz 0V C 50/60Hz 4V C V C 40V C 50/60Hz Other Z S Manual override Option Non-locking push style Non-locking extended style Locking slotted style Indicator light and surge voltage suppressor None With Indicator light and surge voltage suppressor (unavailable for "" type) With surge voltage suppressor (vailable only for "" type) Coil rated voltage Option 00V C 50/60Hz 00V C 50/60Hz 0V C 50/60Hz 0V C 50/60Hz 4V C V C 40V C 50/60Hz Other Indicator and surge voltage suppressor None S With surge voltage suppressor Z With indicator light and surge voltage suppressor L With indicator light. Not available for V C, 40V C or other voltages. E T Electrical entry rommet rommet terminal Conduit terminal IN connector Precautions e sure to read before handling. Refer to p.0-33 for Safety Instructions and p.0-37 to 0-40 for common precautions. External Pilot Caution For piping to pilot port (P, P) Piping should be according to the below. Port P P ir operated VNC 0 4 VNC 0 External pilot leed port leed port External pilot Solenoid VNC 4 External pilot Pilot exhaust Installing silencer to the exhaust port and bleed port is recommended for noise reduction and reducing dust. Piping Caution When high temperature fluid is used, use the fittings and tube with heatresistant type. (Self-align fittings, Teflon R tube or copper tube, etc.) 4.-7

28 3.5MPa, 7.0MPa High Pressure Coolant Valve Series VNH Corresponding to high speed grinding and long drilling processes Valve for high pressure coolant liquid (up to 3.5 MPa or 7.0 MPa) that is ideal for lubrication, dust blowing and cooling. Pilot air operated cylinder driving mechanism. Metal seal with poppet valve structure. Two seal materials NR/FKM P: Pilot SUP port P: Pilot EXH port Easy maintenance Parts can be exchanged without removing the existing main piping P port Smooth valve operation Reduced valve switching resistance due to balance structure port pplication examples 3 port valve (3.5MPa, 7.0MPa) Piping Primary side (supply side): P port Secondary side (exhaust side): and port Supply pilot air higher than 0.5MPa to P port port 7.0MPa Ex) 3 port valve: Reducing load to pump port valve (7.0MPa) VNH Piping Primary side (supply side): P port P nozzle Secondary side (exhaust side): (P) () and port Tank 3() Supply pilot air higher than 0.5MPa to Coolant pump P port. port valve Series Operating fluid pressure Port 3.5MPa 3 port 3/8(0), /(5) 3/4(0), (5) port (Large flow) 3 port 3/8(0), /(5) 3/4(0), (5) Ex) port valve: Nozzle ON/OFF Tank Coolant pump (P) VNH P () nozzle For reducing load to pump, coolant liquid is returned form port to tank in each time. Ex) 3 port valve: Switching nozzle VNH P port (Pilot air SUP port) (P) Tank Coolant pump P () 3() nozzle P port (Pilot air SUP port) P port (Coolant liquid SUP port) 5 Port (Coolant liquid EXH port) Switching nozzles on supplying coolant liquid. Ex3) port valve: Nozzle ON/OFF VNH P port (Coolant liquid SUP port) 5 port (Coolant liquid EXH port) (P) P nozzle () 3() plug Tank Coolant pump port valve application (Not applicable for 7.0MPa model) 4.-9

29 VNH How to Order VNH 5 T Port 3 port 3 port port: 7.0MPa model only Valve style 3 Valve size 3 4 N.C./3.5MPa N.C./7.0MPa Seal material NR seal FKM seal Rc 3 8 Rc Rc 3 4 Rc How to Order Pilot Solenoid Valve VO30-00 T X30 Rated voltage ir operated 00V C 50/60Hz 00V C 50/60Hz 3 0V C 50/60Hz 4 0V C 50/60Hz 5 4V C 6 V C 7 40V C 50/60Hz 9 Other Option racket None With bracket Note) Standard model is equipped with silencer on EXH port P Electrical entry/indicator light and surge voltage suppressor T Conduit terminal TS Conduit terminal with surge voltage suppressor TZ Conduit terminal with indicator light and surge voltage suppressor TL Conduit terminal with indicator light Except for rated voltage 6, 7, 9 Rated voltage 00V C 50/60Hz 00V C 50/60Hz 3 0V C 50/60Hz 4 0V C 50/60Hz 5 4V C 6 V C 7 40V C 50/60Hz 9 Other Option Indicator light and surge voltage suppressor None S Z L With surge voltage suppressor With indicator light and surge suppressor With indicator light Option escription racket (with bolt and washer) Part No. VNH VNH VNH3 VNH4 VNH-6 VNH-6 VNH3-6 VNH

30 VNH Specifications Operating fluid pressure Fluid Operation Operating fluid temperature VNH VNH 3 3 Pressure Pilot air Temperature Lubrication Proof pressure mbient temperature Max. operating frequency Mounting orientation Orifice size Effective area Flow rate Cv factor Pilot port size Weight Face-to-face dimension No freezing allowed VNH 0 VNH VNH to 3.5MPa VNH4 VNH3 VNH3 VNH33 VNH VNH to 7.0MPa Fluid External pilot solenoid/ir operated 5 to 60 C/ 5 to 60 C VNH33 VNH333 VNH to 60 C/ 5 to 99 C 0.5 to 0.7MPa 5 to 50 C Not required (Use turbin oil class, ISO V3 if lubricated) 5.5MPa 0.5MPa 5 to 50 C 0 times/min Vertical upwards Rc 3 8 Rc Rc 3 4 Rc Rc 3 8 Rc Rc 3 4 Rc Rc 3 8 Rc Rc 3 4 Rc ø7. ø8.7 ø0.6 ø4.3 ø3.9 ø5. ø6. ø7.3 ø8 ø9.5 ø3.5 ø5.8 mm 4mm 58mm mm 7.mm 3mm 8mm 5mm 30mm 43mm 86mm 0mm Rc 8 Rc 4 Rc 8 Rc 4 Rc 8 Rc 4 kg 60mm 3.kg 80mm 5.6kg 00mm Equivalent size 8.kg 5mm 3 port valve port valve kg 60mm 3.kg 80mm 5.6kg 00mm 8.kg 5mm kg 60mm 3.kg 80mm 5.6kg 00mm 8.kg 5mm 3.5MPa Pilot Operated Solenoid Valve Specifications Pilot operated solenoid valve Electrical entry Coil rated voltage C(50/60/Hz) C pplicable voltage range Coil insulation Temperature rise pparent power Power consumption C C Inrush Holding Manual override VO30-00 T -X30 Conduit terminal 00V, 00V, other voltages (Option) 4V, other voltages (Option) 5% to +0% of the rated voltage Class or equivalent (30 C) 70 C or less (pplication of rated voltage) V(50Hz), 0.5V(60Hz) 7.5V(50Hz), 6V(60Hz) 4.8W Non-locking push style Symbol P P (P) () 3() (P) () 7.0MPa 3Port Port 4.-3

31 VNH Flow Characteristics 3.5MPa <How to Read The raph> Pressure differential of coolant liquid whose flow rate is 50l/min VNH4 (Cv=6.): P 0.03MPa VNH3 (Cv=3.): P 0.MPa VNH (Cv=.3): P 0.5MPa VNH (Cv=.): P 0.86MPa <How to Calculate Flow> Calculation by Cv factor Q=4. Cv 0. P Calculation by effective area...l/min Q=0.8 S 0. P...l/min (Symbol) Q : Flow rate(l/min) P : Pressure differential P-P(MPa) P : Primary pressure(mpa) P : Secondary pressure(mpa) S : Effective area(mm ) S 8/Cv Cv : Cv factor : Specific gravity Water= 7.0MPa <How to Read The raph> Pressure differential of coolant liquid whose flow rate is 30l/min: VNH433 (Cv=6.6): P 0.0MPa VNH333 (Cv=4.6): P 0.MPa VNH33 (Cv=.4): P 0.08MPa VNH33 (Cv=.7): P 0.6MPa VNH43 (Cv=.4): P 0.3MPa VNH33 (Cv=.0): P 0.45MPa VNH3 (Cv=0.7): P 0.9MPa VNH3 (Cv=0.4): P 0.8MPa <How to Calculate Flow> Calculation by Cv factor Q=4. Cv 0. P Calculation by effective area...l/min Q=0.8 S 0. P...l/min (Symbol) Q : Flow rate(l/min) P : Pressure differential P-P(MPa) P : Primary pressure(mpa) P : Secondary pressure(mpa) S : Effective area(mm ) S 8/Cv Cv : Cv factor : Specific gravity Water= 4.-3

32 VNH Construction! P: Pilot SUP port P: Pilot EXH port!0 i e u e u r r!0 P Port t i! t! Port P Port Port q q o y w o w Port <3 port valve> < port valve> Operation principles When the pilot operated solenoid valve! is not energised, the valve element t connected to the piston u is closed by the return spring i. Then valve element y connected to the valve element t is open. When the pilot operated solenoid valve! is energized, the pilot air supplied to the bottom of the piston u moves upward to open the valve element t and closes the valve element y. ecause rod!0 is connected to valve element t by parallel pin!. Valve element becomes free to incline and it certainly reaches valve seat. Component Parts No. escription Material Note q w e r t y u i o!0! ody Undercover Cover Plate Valve element Valve element Piston Return spring Valve seat Rod Parallel pin Cast iron Cast iron luminium alloy Iron Stainless Steel Stainless Steel luminium alloy Piano wire Stainless Steel Stainless steel Stainless Steel Coated Coated! Pilot solenoid valve Refer to How to Order on p Precautions e sure to read before handling. Refer to p.0-33 for Safety Instructions and p.0-37 to 0-40 for common precautions. How to Use Port Valve (VNH ) Caution qwhen plug is screwed to port, use concave top plug. If using plug whose top is flat, valve element in the body may be pushed up and the valve cannot be closed. ex) Concave top wvnh 3 is not available to use as port valve by plugging port. Use port valve VNH 33. Piping Caution When high temperature fluids are is used, use the fittings and tube with heat-resistant. (Self-align fittings, Teflon R tube or copper tube, etc.) 4.-33

33 VNH imensions imensions VNH -0 VNH -5 VNH3-0 VNH4-5 Main port port 3 port Pilot port Rc -Rc 3 4 -Rc 3-Rc 3-Rc Rc Rc 8 Rc 4 Rc C E F H (mm) I J K L M N O P Q R S T U V VNH -0 VNH -5 VNH3-0 VNH X X X 09 9 X M5 X 0.8 epth 5.5 M6 X epth 6 M8 X.5 epth 6 M8 X.5 epth

34 Port Valve for Steam Steam Valve Series VN Port Valve for Steam MX.80 o C y the adoption of a PTFE seal, the valve is suited for steam. ody material: ronze (C 6), Stainless steel With indicator (option) Possible to mount the operation confirmation indicator on all valves. Cylinder actuation system by the external pilot air Large valve capacity Cv0.7 to 43 PTFE seal Many variations types N.C., N.O. Screw-in (6 to 50) Flange (3F to 50F) 4.-35

35 VN How to Order ody option S Standard (C6) Stainless steel body Only screw-in style ir Oparated VN 0 S 5 Option L L None With bracket With indicator With bracket, indicator Only valve size,, 3, 4 Valve size Symbol Orifice size (mm) ø7 ø5 ø0 ø5 ø3 ø40 ø50 Valve style Symbol 0 4 N.C. N.O. N.C. Symbol Portsize F 4 Flange 40 40F Flange 50 50F Flange 4.-36

36 VN VN0-6 VN0-8 VN0-0 VN0-0 VN0-5 VN30-0 VN40-5 VN50-3 VN50-3F VN60-40 VN60-40F VN70-50 VN70-50F Flange () Orifice size ø (mm) Flow rate Cv Effe. area (mm ) Weight (kg) Note ) The companion flange is JIS 0 0K (Standard) or its equivalent. Valve Specifications Symbol Fluid Fluid temperature mbient temperature Proof pressure Operating pressure range External pilot air No freezing N.C. Pressure N.O. Lubrication Temparature Valve N.C. N.O. Valve size Normally closed Normally open Steam 5 to80 C 5 to 60 C.5MPa 0 to 0.97MPa 0.3 to 0.7MPa 0. to 0.5MPa Reffer to table q for application Not required (Use turbine oil No. (ISO V3), if lubricated.) 5 to 60 C Table q Operating pressure - Pilot pressure (N.O.) P P VN P P VN

37 VN Flow Characteristics Saturated Steam How to Read The raph In the sonic flow region: For a flow of 500 Kg/h VN30 (Orifice ø0)... P 0.55MPa VN40 (Orifice ø5)... P 0.3MPa How to Calculate Flow Equation in the domain of subsonic flow Calculation by Cv factor Q=98 Cv P(P+.033)... kg/h Calculation by effective area Q= S P(P+.033)... kg/h Equation in the domain of sonic flow Calculation by Cv factor Q=98.9 Cv (p+.033)... kg/h Calculation by effective area Q=5.5 S (P+.033)... kg/h 4.-38

38 VN Flow Characteristics Water/VN to 7 should be N.O. to suppress water hammer. How to Read The raph In case of a water flow of 00 l/min. VN40 (Orifice ø5)... P 0.035MPa VN30 (Orifice ø0)... P 0.08MPa VN0 (Orifice ø5)... P 0.MPa How to Calculate Flow/Water <Water and other liquids> Calculation by Cv factor Q=4. Cv 0. P... l/min Calculation by effective area Q=0.8 S 0. P... l/min Note) Calculation error of fluid with viscosity of 50 cst or less will be very small. Symbol Q : Flow rate (ir and other liquids l/min) P: Pressure differential(p P) P : Upstream pressure (MPa) P : ownstream pressure(mpa) S : Effective area(mm ) S 8Cv Cv: Cv factor ( / ) : Specific gravity ( / ) ir/water = Construction Component Parts No. escription Material Note q w e r t y u ody Cover assembly Plate assembly Valve element Piston assembly Return spring Second plate ass'y ronze luminum alloy rass Valve material (PTFE) luminum alloy Piano wire luminum alloy Clear coated Platinum silver painted PTFE, EPR, FPM rass ody option S is made of stainless steel. Operation Principles 0 VN 0 4 (N.C.): When fluid is exhausted from the P port, the valve connected with the piston is closed by the return spring When valve opens When pressurized air enters through the P port, the valve piston moves upward by the pilot air that enters below the piston and the valve element opens. When valve closes: When fluid is exhausted from the P port, the pilot air below the piston is exhausted and the valve element is closed by the return spring. 0 (N.O.) In contrast with the N.C., when air is exhausted from the P port, the return spring opens the valve element. Pressurized air that enters through the P port closes the valve element

39 VN 6, 8, 0 VN0-6 VN0-8 VN0-0 Main port , 5, 0, 5 Main port C E F M N P Q R S T U VN0-0 VN0-5 VN30-0 VN

40 VN 3, 40, 50 VN50-3 VN60-40 VN70-50 Main port 4 Pilot port C E F H 8 0 J Flange/3F, 40F, 50F VN50-3F VN60-40F VN70-50F pplicable flange Pilot port C E F H 4 J

41 VN Precautions e sure to read before handling. Refer to p.0-33 for Safety Instructions p.0-37 to 0-40 for common precautions. External Pilot Caution Piping of pilot port (P, P) P and p piping should be as follows according to the model. diabatic Space Caution There is a space between body and cover ( : approximate mm) for adiabatic effect. Port O O P External pilot Exhaust P Exhaust External pilot It is recomended to mount a silencer in the bleed port to prevent entry of dust into the valve. Piping Caution To use the piping with a high temperature fluid, use heat resistant fittings and tubes. (Self-align fittings, Teflon R tube or copper pipe, etc.) Teflon is a registered trademark of upont. 4.-4