Multi Floor Installation

This animation describes the advantages of BERMAD’s single-floor pressure reduction system, installed in the water supply system of a high-rise building that is divided into few multi-floor pressure zones.

Single Floor Installation

This animation describes the operation of Integrated self supported BERMAD’s Pressure Reduction system in water supply of high-rise building, which is divided into few pressure zones.

How to Commission and Calibrate a Pressure Reducing Station with Watchdog Valve

This video shows the commissioning and calibration of the BERMAD BC-720 pressure reducing control valve installed in-line with a Bermad 72S-H pressure reducing emergency backup or "watchdog" valve. Both valves are shown installed in a pressure reducing station equipped with upstream and downstream isolation valves, pressure gauges and an in-line strainer. This configuration is designed to reliably and accurately reduce a higher supply line pressure to a lower consumer line pressure regardless of fluctuating upstream pressure or flow rates. As a safety feature, the station includes a "watchdog" emergency backup valve, normally dormant and fully open and that will quickly enter into a pressure reduction mode if the consumer line pressure rises above a pre-set maximum value. As soon as the "watchdog" valve enters into operation a limit switch on the valve will be triggered to alert the relevant authority to implement corrective action.

Pressure Reducing System with "Watchdog" Hydraulic Backup Valve BC-72S-H-P

Hydraulically operated, diaphragm actuated pressure reducing system, consisting of a BERMAD BC-720-P PRV and an integral “Watchdog” backup valve. The system reduces a high upstream pressure to a lower, constant downstream pressure, regardless of fluctuating demand or varying upstream pressure. The “Watchdog” backup valve is fully open in normal operation due to its double chamber configuration, minimizing head loss and maximizing flow through the valve. Should pressure rise downstream of the BERMAD BC-720-P because of valve failure, the “Watchdog” quickly responds and triggers an alarm, while providing stable pressure to consumers until the PRV is repaired.

BERMAD 700 series valves are hydraulic, oblique pattern, globe valves with double chamber unitized actuator, that can be disassembled from the body as a separate integral unit. The valves hydrodynamic body is designed for unobstructed flow path and provides excellent and highly effective modulation capacity for high differential pressure applications.

  • High Quality Construction Materials – Reliable, resilient and long lasting operation
  • Robust Design – Suitable for constant, intense operation
  • In-Line Serviceable – Quick and easy maintenance and service
  • Line Pressure Driven – Independent operation, no external power needed
  • Unitized Actuator Assembly – Minimal downtime
  • Hydrodynamic Body with Unobstructed Flow Path – Minimal noise and cavitation damage
  • V-Port Throttling Plug – Low flow stability
  • 2-Way Control Loop – Immediate, accurate response to sudden system variations
  • Adjustable Pilot – Easy field pressure setting and calibration
  • Compact Structure – Installation in confined spaces
  • Built-in Redundancy – Safe and continuous water supply
  • System Failure Indication – Immediate notification to maintenance personnel
  • Reduces pressure for separate pressure zones in hi-rise buildings
  • Reduces incoming pressure from municipal water supply
  • Minimizes water supply disruption due to PRV failure
  • Allows for both “on floor” and “mechanical floor” installations to provide the most convenient access



Pressure Reducing System, featuring a BERMAD BC-72S-H-P system to reduce high incoming pressure to a lower downstream set-point while minimizing the possibility of total water shut-off and a low flow bypass branch for low demand operation. For information on the other BERMAD products in this system please see the product data sheet for the BERMAD BC-73Q-P and BERMAD BC-70F-P.

English BC 700 Series Engineering
English BC-72S-H-P Product Page
English 700 & 800 Potable Water Ordering Guide