Digital relief valves D-G unctional Symbols D-G- Specifications Size Maximum working pressure Rated flow Maximum flow Maximum adjustable pressure Ma Minimum control pressure Hysteresis Repeatability emperature drift ISO VG hydraulic fluid or equivalent Indicated are the percentages for the maximum control pressure when the temperature changes in the to 6 range. Resolution (maximum no. of steps) Response Ma L/min L/min ressure adjustment range symbols ressure adjustment range symbols Valve to valve variation ank port allowable back pressure Ma ilter (nominal filtration grain size) µm Weight kg -phase energization system --phase energization system -phase energization system D-G-~ Model ode D-G---- Digital relief valve Size See Specifications ressure adjustment range See Specifications Maximum number of steps : or steps (-phase motor)* : steps (-phase motor) Design no. : D-G- : D-G-/6/ 6 8 he minimum control pressure depends on the flow so refer to the characteristics curves on page - for further details. Less than.% of maximum control pressure Less than.% of maximum control pressure Less than % Less than 6% Less than 6% Less than 6% Less than % Less than % Less than % Less than % Less than % Less than % Less than.% Less than % (-phase motors)* (-phase motors)* (-phase motors) he valve response is significantly affected by the performance of the controller and driver used. or further details, refer to the operating instructions of our controllers and drivers. ±% or less than maximum control pressure or less or less..9.6 - Digital Valve ontrol Systems * his was previously referred to as a -phase motor (the motor itself has remained unchanged).
haracteristics curves (at mm²/s) (typical examples) Minimum control pressure characteristics ressure override characteristics pressure characteristics.... D-G- D-G- D-G-............. low L/min.. 6 8 low L/min -phase motor -phase motor -phase energization -phase energization D-G- D-G- D-G-............... 6 8 low L/min 6 8 6 8 low L/min -phase motor -phase motor -phase energization -phase energization - Digital Valve ontrol Systems D-G-6 D-G-6 D-G-6............... low L/min 6 8 low L/min D-G- D-G- D-G-.... low L/min..... low L/min...... 6 8 -phase motor -phase energization -phase motor -phase energization -phase motor -phase energization -phase motor -phase energization Notes on Operation When the reset signal is input, the minimum control pressure is set by the reset mechanism which is built into the valve. It is possible to adjust the valve s origin point by performing adjustments inside the valve, but re-adjustment is not necessary since the adjustment was completed prior to shipment from the factory.
Subplates and Mounting olts (JIS 6 Strength Grade.9 or Equivalent) Valve D-G- M D-G- M 8 D-G-6 M6 8 D-G- M Mounting olts Metric hread Unified hread Dimensions D-G- port /-UN 8. /8-UN 8. /-UN.6 No. of olts onnection Subplate ort Diameter Rc DGMS--E---JA-J* DGVM----JA-J* /8 GM---JA-J /8 GM-6--JA-J / GM---JA-J -/ -φ.6 holes, φ counterbore depth he mounting bolts are not provided with the valve bodies and must be ordered separately. Subplate must be ordered separately. Mounting bolts are provided. (Not applicable to models indicated with *) (Unified thread) or further details of the dimensions, refer to pages R6- and R6-6. Mounting bolt tightening torque D-G-: ~8 N m D-G-: ~88 N m D-G-6: 9~ N m D-G-: 8~ N m 6. Receptacle: MSA6S- port.... Use the MS66S-S or MS86S-S for the plug and the MS-8A for the cable clamp. hese parts are not provided as parts of the valve body.. φ6. 9.... 6 6. 6. 6 6 D-G- 9 9 -φ. holes, φ9.8 counterbore depth φ6. lug connect/disconnect space MS66S-S:6 MS86S-S:6. 9 6. 8 -M, deep - port 8. port port (vent) φ8 lug connect/disconnect space MS66S-S:6 MS86S-S:6 Receptacle: MSA6S- Use the MS66S-S or MS86S-S for the plug and the MS-8A for the cable clamp. hese parts are not provided as parts of the valve body. Digital Valve ontrol Systems 9. φ., 8 deep -M, deep. (for positioning pin) or /-UN, deep 8 -φ. 9.. width across flats 8. 8 6 6.. 6. φ φ6. positioning pin 6. Max. 6
Dimensions D-G-6 -φ6. holes, φ. counterbore depth port port port (vent) 69. 8 9. 6 66. Receptacle: MSA6S- Use the MS66S-S or MS86S-S for the plug and the MS-8A for the cable clamp. hese parts are not provided as parts of the valve body. 8 6 6 φ6. positioning pin φ8 lug connect/disconnect space MS66S-S:6 MS86S-S:6. 9. 6. 6 width across flats 6. Max. 6 φ., 8 deep (for positioning pin) 66.. 6. 8. -M6, 6 deep. 8 or /8-UN, deep -φ φ 69. 8. 9 - D-G- -φ holes, φ counterbore depth port port port (vent) Digital Valve ontrol Systems 8. 6. 9 88. 9 9. φ8 lug connect/disconnect space MS66S-S:6 MS86S-S:6. Receptacle: MSA6S- Use the MS66S-S or MS86S-S for the plug and the MS-8A for the cable clamp. hese parts are not provided as parts of the valve body. φ., 8 deep (for positioning pin).. -φ9 98... 6.. width across flats. 8 9 88. 9 6... -M, deep. 8 8. 6. φ or /-UN, deep φ6. positioning pin 6. Max.
onstruction D-G- (configured with numbers to 9) * 6 8 * : Seat 6 is pressure-fitted into body. * : Seat is pressure-fitted into cover. * : Seat 6 is pressure-fitted into body 8. 9 9 6 8 * 9 8 * 6 D-G-6/ 89 6 * 6 O-rings D-G- No. art Number 6 9 D-G- No. art Number 9 98 9 9 99 99 999 99 9 AS68-8 (NR, Hs) AS68- (NR, Hs) AS68- (NR, Hs) AS68- (NR, Hs9) AS68- (NR, Hs9) AS68-9 (NR, Hs9) AS68- (NR, Hs9) AS68- (NR, Hs) Note: arts 6, and 9 are the same as the ones for the D-G-. D-G- D-G- Symbol Spring 6 Seat 6 Spring V8 VA9 V8 VA VA8 VA VA86 VA86 D-G- Symbol Spring 6 Seat 6 Spring V8 VA9 V8 D-G- Symbol Seat 6 VA9 VA6 VA8 D-G-6 Symbol Spring 6 Seat 6 Spring V8 VA9 V8 VA9 VA6 VA8 VA9 VA VA8 Spring VA VA VA VA VA VA VA VA86 VA86 D-G-6 No. art Number AS68-6 (NR, Hs9) AS68- (NR, Hs9) 9 969 99 VA68 9 AS68- (NR, Hs) Note: arts 6, and 9 are the same as the ones for the D-G-. D-G- No. art Number 99 AS68- (NR, Hs9) 99 AS68- (NR, Hs9) 99 AS68- (NR, Hs9) 9 9 AS68- (NR, Hs) Note: arts 6, and 9 are the same as the ones for the D-G-. - Digital Valve ontrol Systems