What is a PRV (Pressure Reducing Valve)?

A PRV is a type of valve that reduces a higher upstream pressure to a stable lower downstream pressure, irrespective of fluctuating demand or changing upstream pressure. These are essential in various settings, from municipal networks to high-rise buildings, ensuring protection against overpressure and maintaining sufficient pressure for effective use.

Types of PRVs

PRVs can be mechanical, electronic, or hydraulic. Bermad specialises in fully automatic hydraulic PRVs, which are particularly efficient in managing variable flows and pressures.

Applications of PRVs

Municipal Systems: PRVs are crucial at the start of pressure zones or DMAs (District Metering Areas) to protect downstream equipment and household plumbing while ensuring reliable pressure for users.
Irrigation: In agriculture, PRVs manage the water pressure for drip systems, pivot irrigation machines, and lower elevation fields to prevent damage and ensure efficient water distribution.
High-Rise Buildings: Installed on each floor or every few floors, PRVs safeguard internal plumbing and fittings from excessive pressure, promoting longevity and safety.

How PRVs Work

A pressure reducing valve operates through a pressure reducing pilot that senses and adjusts to downstream pressure. The pilot commands the valve to adjust—throttling or closing when pressure exceeds a set point and opening when it falls below, ensuring consistent output regardless of external changes.

Choosing the Right PRV

The choice of PRV depends on the specific needs of the application—considering factors like flow patterns, pipe characteristics, and system demands. Options vary from full bore designs for minimal pressure loss to specialized models designed to handle low flows or reduce cavitation.

Waterworks & Mining


Fire & Building