Bermad 710-B Powered Opening Solenoid Controlled Valve

• Line pressure driven
  • Independent operation
  • No motor required
  • Long term drip tight sealing
• Solenoid Controlled
  • Low cost wiring
  • Wide ranges of pressures and voltages
  • Low power consumption
  • Normally Open, Normally Closed or last position

• In-line serviceable – Easy maintenance
• Double chamber
  • Non-slam opening and closing characteristics
  • Protected diaphragm
  • Full powered opening and closing
• Semi-straight flow – Smooth flow characteristics
• “Y” or angle, wide body – Minimized pressure loss
• Flexible design – Easy addition of of features
• Major Additional Features
  • Relief override – 710 – 3Q – B
  • Opening & closing speed control – 710 – 03 – B
  • Closing surge prevention – 710 – 49 – B
  • Flow over-the-seat (fail-safe close) – 710 – BO

The Model 710 – B is a solenoid controlled valve equipped with a 3-way solenoid pilot and 3-way check valves. The normally open solenoid applies pressure to the upper chamber, harnessing valve differential pressure to power the diaphragm-actuator, closing the main valve. Energizing the solenoid vents control chamber pressure causing the main valve to open fully. The lower control chamber is open to atmosphere.

In cases where pipeline water is contaminated (corrosive, debris laden) external control fluid is often used. For 10″ and larger valves, an accelerator quickens valve response. For 10″ and larger valves, a single solenoid commands two accelerators & (replacing solenoids used for the smaller valves) to powerfully open and close the main valve.