Cla-Val - Hydraulic Pressure Control Valves - 58-01 & 658-01 Back Pressure & Solenoid Shut-Off Valve ***
The 50 Series Pressure Relief Valve is designed to maintain constant upstream pressure within close limits. In operation, the valve is actuated by line pressure through a pilot control system, opening fast to maintain steady line pressure but closing gradually to prevent surges. In addition to surge relief, this valve can be used for pressure relief, pressure sustaining, back pressure or unloading functions in a by-pass system.
Cla-Val Models 58-01 and 658-01 valves perform two separate functions. They maintain constant backpressure by discharging excess pressure downstream and when the solenoid is activated, close drip-tight.
When the inlet pressure is greater than the control setting, the valve opens. When the inlet pressure is equal to the control setting, the pilot modulates the valve, maintaining the preselected backpressure. When the inlet pressure is less than the control setting, the pilot system closes the valve drip tight.
