Pilot-operated pressure relief valve K500

automaticback pressure

TheModel K500 PressureSustainingyReliefValveisahydraulically operated. pilot-conlnolled, modulating valvedesigned tomaintain constant upstream pressure within dose limits. This valve can be used for pressure relief, pressure sustaining. back pressure furetions in a by-pass System. In operation, the valve is actuated by line pressure through a pilot control System, openingfasttomaintainsteady line pressure but closing gradually lo prevent surges. Operation is completel y automatic and pressure settings may be easily changed by adjusting screw on top of the pilot.