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The CVCS 25 D1 S2 10 AP100 relief valve is manufactured by Vickers as part of the Relief Valves series and is used to provide pressure control in hydraulic automation circuits. It is supplied in size NG 25 so it fits medium-frame manifolds, and its directional insert type simplifies drop-in installation. An insert ratio of 1:1.5 balances pilot and main stage forces for stable opening behavior, while the valve’s normally open function allows flow to pass until system pressure rises to the preset limit. Because there is no pilot interface, auxiliary lines are unnecessary, and the pilot port orientation follows ISO practice to keep mounting direction consistent. The unit does not include an external adjustment mechanism, meaning set pressure remains factory defined, and a body produced from cast bars supplies the required pressure containment strength.
Maximum operating pressure is 350 bar (5000 psi), enabling the valve to protect high-pressure circuits without excess margin, and it supports a flow of 590 L/min to minimize restriction in large volume loops. A working temperature span from −20 °C to 70 °C permits operation during cold starts and in moderate ambient heat. The assembly weighs 4.41 lb, which eases manifold mounting, and its length of 3.43 in plus height of 1.54 in allow compact stacking in confined cabinets. A gauge port with an SAE thread matches common diagnostic equipment for straightforward pressure checks, rounding out the dimensional, environmental, and connection data needed for industrial hydraulic machinery.
Adjustment
No
Body Material
Cast Bars
Gauge Port Thread
SAE
Height
1.54 in
Insert Ratio
1:1.5
Insert Type
Directional
Length
3.43 in
Max Flow Rate
590 L/min
Max Pressure
350 bar (5000 psi)
Normal Function
Normally Open
Pilot Interface
None
Pilot Port Orientation
ISO
Size
NG 25
Weight
4.41 lb
Working Temp Max
70 C
Working Temp Min
-20 C
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