Piston valve WW-820-PP

hydraulically-operatedpressure-reducingseat

The Model 820-PP High Pressure, Proportional Pressure Reducing Valve is a hydraulically operated, piston actuated control valve that reduces higher upstream pressure to lower downstream pressure at a fixed ratio. PRODUCT FEATURES & BENEFITS Robust structure, piston actuated – High pressure service Line pressure driven – Independent operation Elegant simplicity Most cost effective Simple to maintain Minimal external accessories Built-in check feature – Replacing line sized check valve In-line serviceable – Easy maintenance Double chamber – Moderated valve reaction Flexible design – Easy addition of features Semi-straight flow – Non-turbulent flow Stainless Steel raised seat – Cavitation damage resistant Obstacle free, full bore – Uncompromising reliability V-Port Throttling Plug – Low flow stability TYPICAL PRODUCT APPLICATIONS Typical Applications There are two major applications for the Model 820-PP High Pressure, Proportional Pressure Reducing Valve: Long downhill lines: Systems A1 and A2 prevent the downhill line from exceeding its pressure rating. High differential pressure systems: System B reduces cavitation damage and noise level by distributing the load of the high differential pressure. System C illustrates protection of a circulation valve from high differential pressure and resultant severe cavitation. System D shows protection of a level control valve from high differential pressure.