Bermad - Adjustable Direct Acting Pressure Reducing Valve - 25mm

The BERMAD Adjustable Direct Acting Pressure Reducer is actuated by a pressure-responsive diaphragm, which seeks to reach an equilibrium between hydraulic and set spring force.
The BERMAD Model 1”- PRV is built of reinforced plastic that endows it with excellent hydraulic performance capabilities and high mechanical strength. It reduces higher upstream pressure to lower constant downstream pressure regardless of fluctuating demand or varying upstream pressure.

Features & Benefits

• Advanced Construction Materials
  • High mechanical strength
  • Proven pressure, flow, and weather resistance
• Adjustable Direct Acting Pressure Reducer
  • Constant downstream pressure
  • Immediate response
  • Settable according to season and stage
• Plastic Body and Trim
  • Highly durable, chemical and cavitation resistant
  • Minimizes friction
• Unitized Rolling Diaphragm and Guided Plug
  • Accurate and stable regulation
  • Prevents diaphragm distortion
• User-Friendly Design
  • Can be installed at any orientation
  • Simple in-line inspection and service

Operation

The Upstream Pressure [P1] applies balanced opening and closing hydraulic forces under the Diaphragm [1] and above the Plug [2]. Downstream Pressure [P2] applies hydraulic closing force under the plug, which seeks to reach equilibrium with the Set Spring [3] force. Should [P2] rise above the setting, the hydraulic closing forces rise above the mechanical force of the spring, pushing the plug to modulate closed, and reducing [P2] back to setting.

Materials

Body, Cover, and Actuator Assembly

• Glass-Filled Nylon

Diaphragm

• NBR (Buna-N), Nylon fabric reinforced

Spring

• Stainless Steel

Size

• 1”; DN25

End Connections

• Female Threads BSP; NPT

Flow Range

• 0.45-7 m3/h; 2-31 gpm

Pressure Ratings

• 9 bar

Operating Pressure Range

• 0.7-9 bar

Temperature

• Water up to 50°C

Setting Springs Selection Table

Flow Chart

Required supply pressure above setting