Dec 06, · The pressure reducing valve (PRV) is designed to reduce both residual (flowing) and static (non-flowing) water pressure. In contrast, pressure restricting devices (PRDs) are designed to only control residual (flowing) water pressure. This differentiation is vital to understanding the design application and expectations of the system.
Get PriceThe Zurn Wilkins Model ZW209FP Pilot Operated Pressure Reducing Valve is designed specifically for Fire Suppression Systems to reduce high inlet pressures to a safe and stable outlet pressure. The pilot assembly reacts to changes in downstream pressure allowing the main valve to modulate between the closed and open position ensuring
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Get PriceSep 06, · The PRVs limit the system pressure (typically below 175 psi) below that which most sprinkler and standpipe system components are commonly designed to withstand. Mandatory requirements to include the fire protection system infrastructure within the building to perform full flow testing of PRVs did not appear in NFPA 13 until the 1999 Edition.
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