Monobloc and Sectional Directional Control Valves

Transcription

1 Monobloc and Sectional Directional Control Valves motion and progress 1/220

2 6 Monobloc directional control valves Contents 6.1 General specifications Dimensional data Performances curves Monobloc bodies Adjustable direct acting Relief Valve RV Spool charts Spool actions Spool positioners dimensions Lever styles Hydraulic Pneumatic controls Pneumatic controls Hydraulic proportional control Electro hydraulic controls Solenoids for pilot electrovalves EHI EHE 78 65/220

3 6.1 General Specifications Max flow rate Max continuous operating pressure supply port P Max intermittent peak pressure Work port A/B Max back pressure tank port T Oil temperature Technical specification l/min U.S.G.P.M. bar PSI bar PSI bar PSI C F to to 180 Oil viscosity mm 2 /s 16 to 75 Oil filtration 30 Spool leakage at 100 bar (1450 PSI), Temp. 50 C (120 F), viscosity 27 mm 2 /s Maximum Average cm 3 /min Cu. In./min cm 3 /min Cu. In./min Lower values on demand (to be agreed with our Sales Dpt.) Number of spools 1 to 2 Adjustable direct operated relief valve (tamper proof seal available on request) Load hold check valve in each section Weight RV LC Material specification: Body: High strength cast iron. Spool: Hardened steel and chrome plated Seals: Buna N" Standard features: 1) Internal load holding check valves (prevent reverse flow through valve when two spools are operated) 2) Parallel circuit 3) Balanced interchangeable spools (provides minimum leakage, smooth operation) 4) Wide selection inlets, work ports, and outlets threaded ports. 5) Negative overlapping of the spool Optional features available: 1) Open or closed centre positions, 3 or 4 way operations, 3 or 4 position (float position), full open centre (motor spool) and other spool options. 2) Carry over. 3) Series connection and tandem 4) Complete lever assembly Symbols: P: inlet port T: outlet port A/B: work ports H.P.C.O.: carry over RV: relief valve P 1 T 1 : side inlet and outlet ports : spool position P: pressure line T : exhaust line E: centre line (by pass). Version kg lb / / /220

4 6.2 Dimensional Data /1 T 1 H.P.C.O. 1 5/16" 12 (SAE16) D A P T M10X1.5 P 1 B RV (see 6.9) / " PRESS B PRESS B D Pos.2: STROKE 7 mm..28" 0 Pos.1: STROKE 7 mm..28" Pos.3: STROKE 7 mm..47" Float PRESS A Pos.2: STROKE 7.5 mm..30" 0 Pos.1: STROKE 7.5 mm..30" PRESS A P 1 P A B A B T RV Dimensional data shown in mm and inches. Ex.: 62 = mm 2.44" = inches " 67/220

5 6.3 Performance curves Oil: Shell Tellus T37 Temperature: 50 C (120 F) Viscosity: 27 mm 2 /s P T P A/B Pressure drop Pressure drop bar PSI U.S.G.P.M. bar PSI U.S.G.P.M. l/min l/min Flow rate Flow rate A/B T Metering std. Spools P A/B 50 bar Pressure drop Flow rate A/B T 50 bar A/B T 150 bar bar PSI U.S.G.P.M. l/min U.S.G.P.M. inches P A/B 150 bar l/min mm Flow rate Stroke 68/220

6 6.4 Monobloc bodies Open centre with P T RV (Standard circuits: parallel) P T D /1 /2 M18X1.5 K01 K01 1/2" BSP Std. 3/4" BSP K K K K RV SAE10 K04 K04 SAE12 K05 K Power beyond with P T RV H.P.C.O. (Standard circuits: parallel) P T H.P.C.O. D /1 / /2 M18X1.5 K21 K21 RV 1/2" BSP Std. 3/4" BSP K K K K SAE10 SAE12 K24 K25 K24 K25 H.P.C.O. Note: Body codes consist of: machined casting, seals, plugs and check valve only. Not to be used for complete valve order. For availability of K bodies without code please contact our Sales Department. 69/220

7 6.4.3 Open centre with P T RV (Optional circuits: series and tandem) / D Standard M18X1.5 1/2" BSP std. 3/4" BSP SAE10 SAE12 K31 K32 K33 K34 K Power beyond with P T RV H.P.C.O. (Optional circuits: series and tandem) / D Standard M18X1.5 K51 1/2" BSP std. 3/4" BSP K52 K53 H.P.C.O. SAE10 K54 SAE12 K55 H.P.C.O. Note: Body codes consist of: machined casting, seals, plugs and check valve only. Not to be used for complete valve order. For availability of K bodies without code please contact our Sales Department. 70/220

8 6.5 Adjustable direct acting Relief Valve RV P P Pressure setting RV T bar PSI U.S.G.P.M. l/min Flow rate Relief valve set at 30 l/min (8 U.S.G.P.M.) Fluctuating pressure Pressure set range bar (PSI) Std. setting bar (PSI) Setting Spring colour ( ) 60 (860) 06 Yellow (YE) Peak ( ) 150 (2100) 15 Green (GR) Operating Time ( ) ( ) 260 (3700) 320 (4600) Blue (BL) Red (RD) 6.6 Spool charts Spool scheme Spool features 4 way 3 position with differential spool in 2 nd position **R 4 way 3 position A/B: blocked E: open by pass A As* 3 way 3 position A: blocked E: open by pass S *Ss 4 way 3 position A/B: blocked E: closed B 4 way 3 position series connection X 4 way 3 position A/B to tank in neutral E: open by pass C *Cs 4 way 3 position A: to tank in neutral Xc 3 way 3 position B: blocked E: open by pass G *Gs 4 way 4 position 4 th float position Z 4 way 3 position B: blocked A: to tank in neutral L ** : special body required * : Hight metering spool (max. flow suggested 50 l/min) 71/220

9 6.7 Spool positioners Spool position Stroke mm Initial hand lever position Hand lever in detent position Spring return position of hand lever Force (F) for spool movement Spool position corresponds to hand lever position F (N) Spool position control (standard) Note: consult factory for different configurations. 6.8 Spool positioner dimensions Spool positioners Microswitch control Spool positioner (Z spool type) 128 Spool positioner Microswitch is operated when the spool is in pos.1 46 Microswitch is operated when the spool is in pos.2 47 Microswitch is operated when the spool is in pos.1 and 2 The microswitch is supplied only on customer s request. 72/220

10 6.9 Lever styles L L100 M10X L Lo M10X1.5 inches Lo mm AL M10X Safety levers L47 L " " M10X1.5 M10X1.5 73/220

11 6.9.2 Remote cable control Lever Support M10X1.5 mm Lo inches L AL AL AL Optional M10X AL Cable Cable length Spool Kit Cables are assembled on the valve only on request and with an extra charge mm 1500 mm 2000 mm 2500 mm 3000 mm 4000 mm L M10X1.5 L Fulcrum Fulcrum. (AL010) Stick Lever M12X1.75 Only for rod remote control Optional Fulcrum Fulcrum Cross joystick for dual axis control L AL Lo=250 M12X1.75 L is supplied complete with rubber boot protection 74/220

12 6.10 Hydraulic Pneumatic controls ON OFF HP Operating conditions Hydraulic Pressure range (bar): Min. 6 Max. 15 (PSI): Min. 85 Max. 215 Pneumatic Pressure range (bar): Min. 6 Max. 10 (PSI): Min. 85 Max Pneumatic controls Pneumatic proportional control PP Electro pneumatic control ON OFF Voltage EP VDC EP VDC Electrical data Insulation class H 180 C (356 F) Encapsulation material: nylon Temperature range: 10 C to 80 C (14 F to 170 F) Duty cycle: 100% at 68 F ambient Voltage variation: 10% to + 15% of nominal voltage Power consumption DC 10 W Electrical connection: DIN43650/A (2P + E) Cable connection PG9 Protection class: IP65 (with connector) Operating conditions Pressure range (bar): Min. 6 Max. 10 (PSI): Min. 85 Max. 145 Ambient temperature: 10 C to 50 C (14 F to 122 F) Response time: 6 8 milliseconds Mounting in any position 75/220

13 6.12 Hydraulic proportional control HP Joystick adjustment diagram 30 Adjustment range (bar): Min. 5 Max. 30 (PSI): Min. 70 Max. 425 Outlet pressure (bar) /220

14 6.13 Electro hydraulic controls Electro hydraulic control external pilot version ON OFF EHE 301 Description Inlet section Description EHE 300 Inlet section EHE 305 End section For solenoid see chapter Electro hydraulic control external pilot version ON OFF with pressure reducing valve on inlet manifold EHE 303 Description Inlet section Description EHE 302 Inlet section EHE 305 End section For solenoid see chapter 6.14 Mechanical and hydraulic features Pilot pressure with pressure reducing valve bar (175 PSI) Pilot flow to each working section:. 1 l/min (0.26 USGPM) Min. suggested filtration micron Operating oil temperature min. 30 C max. 90 C min. 22 F max 194 F Leakage of pressure reducing valve (in neutral pos.) ml/min (6.1 in 3 /min) 77/220

15 6.14 Solenoids for pilot electrovalves EHE Wire class F (VDE 0580) Coil insulation IP65 (DIN 40050) Duty rating ED 100% Stabilized temperature 70 C Voltage tolerance ± 10% Supply Voltage Nominal coil voltage Power (Watt) Ambient temperature Resistance (Ohm) Stabilized temperature Ambient temperature Current (Ampere) Stabilized temperature Coil code 12 V. DC 12 V. DC V. DC 24 V. DC V. AC 21.6 V. DC V. AC 98 V. DC V. AC 198 V. DC D.C. Part number A.C. Part number Armour clamp Pg 9 cable 6 8 mm Diodes 1N 4007 GP Overvoltage protection VDR Connector type DIN Number of poles 2 + Supply voltage max. 220 V Nom. capacity at contacts 10 Ampere Max capacity at contacts Resistance at contacts 16 Ampere 4 mohm Max section of cable 1.5 mm 2 Outer material Glass fibre reinforced nylon Protection factor IP65 (DIN 40050) Insulation class C (VDE 0110) Temperature range C 78/220

16 BUCHER HYDRAULICS Germany Phone Fax France Phone Fax Netherlands UK Phone Phone Fax Fax info.nl@bucherhydraulics.com info.uk@bucherhydraulics.com USA Phone Fax info.wi@bucherhydraulics.com 02/2001 Id.Nr Switzerland Italy Austria China Product Center (Elevator) Phone Fax info.ch@bucherhydraulics.com Phone Fax info.it@bucherhydraulics.com Phone Fax info.at@bucherhydraulics.com Phone Fax info.bj@bucherhydraulics.com Phone Fax info.nh@bucherhydraulics.com We reserve the right of modification without prior notice.