Model 47-03 Pressure Relief & Sustaining Valve
The model 47-03 pressure relief valve is a hydraulically operated, pilot-controlled, modulating valve designed to maintain constant upstream pressure. This valve can be used for pressure relief, pressure sustaining, back pressure, or unloading functions in a by-pass system. 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. Operation is completely automatic and pressure settings may be easily changed.
 Model 47-03 Pressure Relief Valve
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