Dual-function solenoid valve

May 2008 Valves, Actuators & Pump Control

The HydraForce SVRV10-26 is a dual-function solenoid valve for both bypass unloading and pressure relief use. The cartridge valves combine the features of a normally-open solenoid valve with an integral non-adjustable relief valve. It is designed to be both cost-efficient and compact in hydraulic circuits incorporating both a bypass unloading function, as well as system pressure protection.

This valve can be used in a wide variety of system applications. An example motor control circuit is shown in Figure 1. In the de-energised position, pump flow is bypassed to the tank, allowing the motors to remain in the neutral condition. When the SVRV valve is energised, flow is directed to the motor, while the maximum motor torque is regulated by the setting of the SVRV's integral relief valve.

The SVRV relief setting is fixed and non-adjustable. There are five standard pressure setting options, ranging from 104 bar (1500 psi) to 240 bar (3500 psi). Others can be made available upon OEM request.

The SVRV10-26 is rated for flow up to 75 lpm (20 gpm) and pressure to 310 bar (4500 psi). Standard HydraForce 10-size 'D' and 'E' Series coils are used on the cartridge.

The new multifunction valve was developed to allow a smaller and lighter valve package, while simultaneously reducing the cost of both manifold machining and assembly by combining two functions into a single valve.

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