Pilot Operated Unloading Relief Valves

Pilot Operated Unloading Relief Valves

DA series pilot operated unloading valves and DBW series solenoid operated unloading valvesare used to unload the oil pumps’ pressure in a hydraulic system with accumulator. The valve allows high-pressure pump to operate and low-pressure pump to...

Product Details

Pilot Operated Unloading Relief Valve


Our company is one of the professional Pilot Operated Unloading Relief Valves manufacturers & suppliers in China


Features:
 DA series pilot operated unloading valves and DBW series solenoid operated unloading valvesare used to unload the oil pumps’ pressure in a hydraulic system with accumulator. The valve allows high-pressure pump to operate and low-pressure pump to unload pressure.


Specifications: 

Techinal data of DA/DAW-30 series  

Operating medium

Mineral oil-suit to NBR or FKM seal


phosphate-suit to FKM seal

Temperature range of working medium ℃

-30~+80(NBR seal)


-20~+80(FKM seal)

Viscosity scope mm2/s

10~800

The oil cleanliness

The maximum oil pollution level according

to NAS1638 class 9 and ISO4406 20,18,class 15

Switching pressure scope(from T to A)

Within 17%(see the character curve)

Input pressure entrance(P~T unloading)

MPa

~35

Mounting site

Optional

Size

10

25

32

The maximum pressure type 17% l/min

40

100

250

Weight

DA

kg

3.8

7.7

13.4

DAW

kg

4.9

8.8

14.5


Techinal data of DA/DAW- 50 series  

Operating medium

Mineral oil-suit to NBR or FKM seals


phosphate-suit to FKM seals

Temperature range of the scope ℃

-30~+80(NBR seals)


-20~+80(FKM seals)

Viscosity scope mm2/s

10~800

The oil cleanliness

The maximum oil pollution level according

to NAS1638 class 9 and ISO4406 20,18,class

15

Maximum operating pressure

Chamber A MPa
      

31.5

The maximum setting pressure MPa
      

5;10;20;31.5

Mounting site

Optional

The maximum

flow

10%type

l/min

40

80

120

17%type

l/min

60

120

240

Size

10

25

32

Weight

DR

kg

3.8

7.9

12.3

DR...G

kg

5.3

9.4

13.8

DRC

kg

1.2(toward DAWC type adds 1.5kg)

DRC30

kg

1.5(toward DAWC30type adds 1.5kg)


Our Factory:

Pilot Operated Unloading Relief Valves Manufacturers

Pilot Operated Unloading Relief Valves Manufacturers


Pilot Operated Unloading Relief Valves Suppliers

Pilot Operated Unloading Relief Valves Suppliers


Pilot Operated Unloading Relief Valves Factory

Pilot Operated Unloading Relief Valves Factory

Unloading Relief Valve Manufacturers

Unloading Relief Valve Manufacturers


Unloading Relief Valve Suppliers

Unloading Relief Valve Suppliers


Unloading Relief Valve Factory

Unloading Relief Valve Factory


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