
What is a Pressure Reducing Valve?
A Pressure Reducing Valve (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
- WW-723 Sigma EN ES Pressure Reducing & Sustaining Valve
- WW-720-55 Sigma EN ES Electric Pressure Reducing Valve
- WW-720-PD Sigma EN/ES Proportional Pressure Reducing Valve
- WW-720-X – Sigma EN ES Pressure Reducing Valve Double Chamber
- WW-720 – Sigma EN ES Pressure Reducing Valve
- WW-720 M5 / M5L / M6 Pressure reduction valve AS5081 , Watermark
- Caleffi Brass Direct Acting Pressure Reduction Valves WATERMARK approved
- WW720-TC Sigma EN ES Triple Chamber Pressure Reduction valve
- VRCD Pressure reducing-stabilizing in stainless steel
- WW-792-U Burst Control and Pressure Reducing Valve
- WW-720-4T Sigma EN ES Dynamic Pressure-Reducing Control Valve AS5081 / WaterMark
- WW-720 Pressure Reducing Valve AS5081, Watermark
- WW820 – High Pressure, Pressure Reducing Valve
- WW-723 Pressure Sustaining and Reducing Valve AS5081 / WaterMark
- WW-720-55 Pressure Reducing Valve with Solenoid Control AS5081 / Watermark
- WW-720-20 Pressure Reducing Valve with Check Feature AS5081 / WaterMark
- WW-720-PD Proportional Pressure Reducing Valve AS5081 / WaterMark
- WW820-PP – High Pressure Proportional Pressure Reducing Valve
- WW 772-U Flow Control and Pressure Reducing Valve AS5081 / WaterMark
Irrigation
- Pressure Reducing Valve with Solenoid IR-220-55-3W-X
- Pressure Reducing Ratio Valve IR-120-PD-Z
- Pressure Reducing Valve Double chamber IR-120-DC-XZ
- Pressure Reducing Valve IR-120-BZ
- Pressure Reducing Valve IR-220-XZ
- Pressure Reducing Valve IR-120-XZ
- Pressure Reducing Valve with Solenoid IR-120-55-XZ
- Pressure Reducing Valve IR-420-KXZ
- Pressure Reducing Valve with Solenoid IR-420-55-BK (for tape)
- Pressure Reducing Valve IR-420-BKZ
- Pressure Reducing Valve with Solenoid IR-420-55-KXZ
- IR-420-RXZ Pressure Reducing Valve (40-100mm)
- Flow Control and Pressure Reducing Valve IR-472-55-bRU
- Pressure Reducing Valve with Solenoid IR-420-55-R
- Pressure Reducing Valve IR-420-R
- Pressure Reducing Valve with Solenoid IR-420-55
- Pressure Reducing Valve IR-420-XZ
- Pressure Reducing Valve IR-420 (IR-420-2W)
- PRV Series Direct Acting Pressure Regulators
Fire & Building
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