ISO 4401 size 07; 315 bar (4500 psi); up to 200 L/min (53 USgpm) General Description

Transcription

1 Vickers SystemStak SystemStak Valves ISO 441 size 7; 315 bar (45 psi); up to 2 L/min (53 USgpm) General Description This range of stackable hydraulic controls are designed to be mounted under a size 7 directional valve such as Vickers DG*V-7, solenoid controlled and pilot operated. With their cartridge design they will provide a compact hydraulic circuit at reduced cost with the Functional Symbols DGMX-7-PP elimination of interconnecting piping. Servicing is simplified with access to working parts achieved without removing valves from an assembled stack. The units are performance rated up to: 2 L/min (53 USgpm) 315 bar (45 psi) The range comprises: DGMX-7... Pressure reducing module DGMC(2) Pressure relief module DGMFN Flow restrictor module DGMPC-7 Pilot operated check module DGMC-7-PT DGMC2-7-AT DGMC2-7-BT DGMFN-7-Y-A** DGMFN-7-Y-B** DGMFN-7-Y-A**-B** DGMPC-7-AB*-BA* B1 A 1 DGMPC-7-AB* B 1 A 1 DGMPC-7-BA* B 1 A 1 March 1996 GB-248

2 Pressure Reducing Valve Modules DGMX-7 General Description / Model Code / Operating Data General Description These two-stage adjustable pressure reducing modules are used to regulate the downstream pressure in the line in which the integral reducing valve is installed, whilst the upstream pressure fluctuates above the reduced pressure. The valve elements are formed as cartridges for ease of construction and servicing. Model Code (F3-) DGMX-7-PP- * * -1 -B Special seals for phosphate ester fluids Omit for standard seals; see Hydraulic fluids in Further Information section. 2 Reduced pressure adjustment range B = 5 to 65 bar (75 to 945 psi) G = 15 to 315 bar (22 to 45 psi) 4 3 H K Adjustment method = Thimble with lock screw = Thimble with keylock 4 Design number, 1 series Subject to change. Installation dimensions unchanged for design numbers 1-19 inclusive. Operating Data Pressure and Flow Limits Max. pressure (all ports) bar (45 psi) Note that back pressure in line Y, into which the valve s pilot drain is internally connected, increases the effective pressure setting. For pressure adjustment ranges see Model Code. Max. flow rate (through any main line) L/min (42.3 USgpm) Performance Characteristics Typical performance with petroleum oil at 36 cst (169 SUS) and 5 C (122 F). Pilot drain flow.....,5 L/min (.13 USgpm) Reduced Pressure Underride At cartridge outlet for various pressure settings. Reduced pressure psi bar L/min USgpm Flow rate

3 Pressure Reducing Valve Modules DGMX-7 Installation Dimensions in mm (inches) DGMX-7 3rd angle projection 14 (.55) 11,6 (4.) 34,1 (1.34) Ø 7 (.275 dia) 93 (3.66) 9 (3.54) 38 (1.5) 73 (2.875) T A P B X Y Ø 3 (1.18 dia) 7 (2.75) Valve mounting surface: seals in mating unit 5 (1.97) Ø 1,5 (.413 dia) Type K adjuster G 1 / 4 gage port. Unscrew plug for access. 176 (6.93) 56 (2.2) 43 (1.7) for key removal 8 (3.15) 5 (1.97) Mounting (subplate) surface: seals supplied 36 (1.42) max. Type H adjuster For all models, to increase pressure setting, unlock and turn the adjuster clockwise, viewed at the adjuster end. Turn counter-clockwise to decrease pressure setting. Type H adjustment settings can be secured by tightening the lock screw in the end of the thimble. For dimensions of ISO 441, size 7 mounting surface and Vickers subplates, see catalog For details of Vickers fixing bolt kits, see catalog 2314.

4 Pressure Relief Valve Modules DGMC(2)-7 General Description / Model Code / Operating Data General Description These two-stage adjustable pressure relief modules are used to limit the maximum pressure in the lines from which the integral relief elements are fed. The relief elements are formed as cartridges for ease of construction and servicing. Model Code (F3-) DGMC(2)-7-** - * * -1 -B Special seals for phosphate ester fluids Omit for standard seals; see Hydraulic Fluids in Further Information section. 6 4 B F G Pressure adjustment range = 5 to 65 bar (75 to 945 psi) = 1 to 21 bar (15 to 3 psi) = 15 to 315 bar (22 to 45 psi) 2 Type C = Pressure (P) line relief C2 = Service (A or B) line relief 5 H K Adjustment method = Thimble with lock screw = Thimble with keylock 3 Function AT = Limits A, discharge to T; (F3-)DGMC2 models BT = Limits B, discharge to T; (F3-)DGMC2 models PT = Limits P, discharge to T; (F3-)DGMC models 6 Design number, 1 series Subject to change. Installation dimensions unchanged for design numbers 1-19 inclusive. Operating Data Pressure and Flow Limits Max. pressure (all ports) bar (45 psi) Note that back pressure in line T, into which the valve s pilot drain is internally connected, increases the effective pressure setting. For pressure adjustment ranges see Model Code. Max. flow rate (through any main line) L/min (53 USgpm) Performance Characteristics Typical performance with petroleum oil at 36 cst (169 SUS) and 5 C (122 F). Pilot drain flow.....,5 L/min (.13 USgpm) Pressure Override at Cartridge Inlet At various pressure settings and cartridge outlet at bar/psi. Pressure psi bar L/min USgpm Flow rate

5 Pressure Relief Valve Modules DGMC(2)-7 Installation Dimensions in mm (inches) DGMC(2)-7 3rd angle projection 74 (2.9) 34,1 (1.34) 19 (7.48) 11,6 (4.) Ø 7 (.275 dia) 9 (3.54) 73 (2.875) Ø 3 (1.18 dia) T A P B X Y 7 (2.75) 93 (3.66) 5 (1.97) Ø 1,5 (.413 dia) Type K adjuster 43 (1.7) for key removal 57 (2.25) 127 (5.) G 1 / 2 Valve mounting surface: seals in mating unit A P B 53 (2.9) 8 (3.15) 35 (1.375) max. Type H adjuster 15 (4.13) 38 (1.5) Mounting (subplate) surface: seals supplied For all models, to increase pressure setting, unlock and turn the adjuster clockwise, viewed at the adjuster end. Turn counter-clockwise to decrease pressure setting. Type H adjustment settings can be secured by tightening the lock screw in the end of the thimble. For dimensions of ISO 441, size 7 mounting surface and Vickers subplates, see catalog For details of Vickers fixing bolt kits, see catalog 2314.

6 Flow Restrictor Valve Modules DGMFN-7 General Description / Model Code / Operating Data General Description Regulates flow rate between a CETOP size 7 four-way valve and a hydraulic actuator. Unit is sandwiched between directional valve and subplate or manifold. Single or dual line restrictor models are available for meter-out control, relative to the machine actuator. Model Code (F3-) DGMFN-7 -Y- (-A2H)(-B2H) Special seals for phosphate ester fluids Omit for standard seals; see Hydraulic Fluids in Further Information section. 4 Control in line B Standard needle, thimble-with-lockscrew adjustment Omit when not required 2 Direction of flow Meter-out, with respect to machine actuator 3 Control in line A Standard needle, thimble-with-lockscrew adjustment Omit when not required 5 Design number, 1 series Subject to change. Installation dimensions unchanged for design numbers 1-19 inclusive. Operating Data Pressure and Flow Limits Max. pressure (all ports) bar (45 psi) Max. flow rate (through any main line).. 18 L/min (48 USgpm) Performance Characteristics Typical performance with petroleum oil at 36 cst (169 SUS) and 5 C (122 F). Pressure Drops, Restrictor Lines Pressure drop psi bar Restrictor shut Restrictor fully open L/min Flow rate USgpm

7 Flow Restrictor Valve Modules DGMFN-7 Installation Dimensions in mm (inches) DGMFN-7 3rd angle projection 34,1 (1.34) 11,6 (4.) Ø 7 (.275 dia) Model C D 9 (3.54) 73 (2.875) DGMFN-7-Y-A2H 155 (6.1) 37 (1.46) DGMFN-7-Y-B2H 132 (5.2) 14 T P X(.55) DGMFN-7-Y-A2H-B2H 155 (6.1) 37 (1.46) A B Y 7 (2.75) 93 (3.66) 5 (1.97) Ø 1,5 (.413 dia) Locking screw, 3 (.188) A/F socket 3 (1.18) D C 3 (1.18) Valve mounting surface: seals in mating unit Adjusting screw, 8 (.315) A/F socket 5 (2.) 8 (3.15) Adjust by backing-off locking screw(s) counter-clockwise, then turning adjusting screw(s) clockwise to decrease flow/ increase restriction. Re-lock. DGMFN-7-Y-A2H-1: 242 (9.53) max. DGMFN-7-Y-B2H-1: 219 (8.62) max. DGMFN-7-Y-A2H-B2H-1: 329 (12.95) max. Mounting (subplate) surface: seals supplied For dimensions of ISO 441, size 7 mounting surface and Vickers subplates, see catalog For details of Vickers fixing bolt kits, see catalog 2314.

8 Pilot Operated Check Valve Modules DGMPC-7 General Description / Model Code / Operating Data General Description These modules provide pilot operated check functions in one or both service lines (A and B), the pilot supply coming from the opposite service line to that in which the check acts. When closed, the check prevents flow from the actuator port to which it is externally connected. Model Code (F3-) DGMPC-7 (-ABK)(-BAK) Special seals for phosphate ester fluids Omit for standard seals; see Hydraulic Fluids in Further Information section. 3 Line B check Piloted from A, cracking pressure in B: 3,6 bar (55 psi) Omit when not required 2 Line A check Piloted from B, cracking pressure in A: 3,6 bar (55 psi) Omit when not required 4 Design number, 1 series Subject to change. Installation dimensions unchanged for design numbers 1-19 inclusive. Operating Data Pressure and Flow Limits Max. pressure (all ports) bar (45 psi) Max. flow rate (through any main line) L/min (47.6 USgpm) Performance Characteristics Typical performance with petroleum oil at 36 cst (169 SUS) and 5 C (122 F). Check valve s direct cracking pressure ,6 bar (55 psi) Pilot piston/check valve seat area ratio :1 Pressure Drops, A and B Lines Pressure drop psi bar Free flow: pilot pressure = Reverse flow; piloted open Free flow, non-check line L/min Flow rate USgpm

9 Pilot Operated Check Valve Modules DGMPC-7 Installation Dimensions in mm (inches) DGMPC-7 3rd angle projection 37 (1.46) 34,1 (1.34) 11,6 (4.) Ø 7 (.275 dia) 9 (3.54) 73 (2.875) T A P B X Y 7 (2.75) 93 (3.66) 5 (1.97) Ø 1,5 (.413 dia) C 155 (6.1) D Valve mounting surface: seals in mating unit 5 (2.) 8 (3.15) Mounting (subplate) surface: seals supplied Model C D DGMPC-7-ABK DGMPC-7-BAK DGMPC-7-ABK-BAK 28 (1.1) 18 (.71) 28 (1.1) 18 (.71) 28 (1.1) 28 (1.1) For dimensions of ISO 441, size 7 mounting surface and Vickers subplates, see catalog For details of Vickers fixing bolt kits, see catalog 2314.

10 Further Information Hydraulic Fluids Materials and seals used in these valves are compatible with: Antiwear petroleum oils L-HM Non-alkyl based phosphate esters L-HFD The extreme operating range is 13 to 5 cst (7 to 23 SUS) but the recommended running range is 13 to 54 cst (7 to 25 SUS). For further technical information about fluids see catalog 92. Contamination Control Requirements Recommendations on contamination control methods and the selection of products to control fluid condition are included in Vickers publication 9132 or 561, Vickers Guide to Systemic Contamination Control. The book also includes information on the Vickers concept of ProActive Maintenance. The following recommendations are based on ISO cleanliness levels at 2 m, 5 m and 15 m. Mass, approx. DGMX ,3 kg (18.3 lb) DGMC(2) ,3 kg (18.3 lb) DGMFN-7-Y-A2H ,1 kg (15.6 lb) DGMFN-7-Y-B2H ,8 kg (12.8 lb) DGMFN-7-Y-A2H-B2H. 7,7 kg (17. lb) DGMPC ,3 kg (16.1 lb) Mounting Attitude Unrestricted. Ordering Procedure Order by full model designation, e.g. 2 off DGMX-7-PP-GH-1-B For products in this catalog the recommended levels are: to 21 bar (3 psi) /16/13 21 to 315 bar (3 to 45 psi) /15/12 Temperatures For petroleum oil: Min C ( 4 F) Max C (14 F) For water-containing fluids: Min C (5 F) Max C (13 F) For other fluids where limits are outside those of petroleum oil, consult fluid manufacturer or Vickers representative. Whatever the actual temperature range, ensure that viscosities stay within those specified under Hydraulic Fluids. Ambient for: All valves at full performance specification: to +6 C (32 to +14 F)