Ensuring Optimal Water Pressure for Fire Safety

Sep 18, 2023 | Company News, News

Fire protection systems rely on functional components to supply adequate water flow during emergencies. Pressure reducing valves (PRVs) precisely regulate inlet pressures to downstream piping and sprinklers for optimized performance.

PRV Basics

Positioned where high pressure mains enter buildings, PRVs maintain constant reduced pressures regardless of fluctuating supply conditions. Pilot-operated diaphragm valves throttle water flow utilizing a precalibrated spring/diaphragm assembly. PRVs protect sensitive sprinklers and distribution pipes.

Standpipe Applications

Multi-story buildings necessitate standpipes, which PRVs safeguard. Pressure reducing valve standpipe systems offer firefighters immediate water access throughout buildings via installed outlets and hoses. PRVs preserve residual pressures for effective standpipe use for all floor levels per code. Fire department connections also benefit.

Importance of Proper Sizing

Undersized PRVs cause excess pressure that may damage systems or impede optimal sprinkler discharge. Oversized valves produce inadequate pressures during high demand scenarios. Hydraulic calculations size PRVs uniquely for each application factoring pipe sizes, elevation, hazard classification and more.

Critical Spare Parts

PRVs require occasional routine maintenance like diaphragm replacements, Fire protection systems fittings, especially post-fire events. Keeping critical assembly kits and seals as spares minimizes potential downtime from component failure. Property owners ease worries over water supply reliability for first responders.

Selecting Best Materials

Body and internal components resist corrosion for long lifespans handling various untreated water supplies. Ductile or stainless steel withstand pressure and impacts from surge or waterhammer. Seats made from resilient rubber or EPDM prevent liability issues from unplanned water damage.

Pressure Gauge Installation

Standard overhead fire departmentconnectionsfeature downstream gauges toconfirm taps constantly maintain required residual pressure levels. Isolation valves conveniently allow gauge servicing without interrupting standpipes.


Pressure reducing valve fire protection demands reliable pressure control to effectively deliver water to sprinklers and hose connections. Properly sized PRVs protect sensitive systems while ensuring optimal performance during real emergencies. Regular inspection and critical spare part storage reinforce property safety goals through simplified response readiness.