Bermad 835-M High Pressure Surge Anticipating Control Valve



835-M – High Pressure Surge Anticipating Control Valve

The Model 835-M High Pressure, Surge Anticipating Valve is an off-line, hydraulically operated, piston actuated valve. The valve, sensing line pressure, opens in response to the pressure drop associated with abrupt pump stoppage. The pre-opened valve dissipates the returning high pressure wave, eliminating the surge.

The Model 835-M smoothly closes drip tight as quickly as the relief feature allows, while preventing closing surge. The valve also relieves excessive system pressure.

  • Eliminates surge in all pumping systems:
    • Booster & deep well, single & variable speed
  • Eliminates surge in all distribution networks:
    • Municipal, high-rise buildings, sewage, HVAC, irrigation
    • Difficult to main, remote locations, & older systems


  • Robust structure, piston actuated - high pressure service
  • Replaces surge air vessels
    • Relives surge, fail safe open
    • Minimal maintenance
    • Economy of space
    • Lower investment & maintenance costs
    • Expecially economic for higher pressure ratings
  • Line pressure driven
    • Independent operation
    • No motor required
    • Long term drip tight sealing
    • Adjustable hydraulic actuation
  • In-line serviceable - Easy maintenance
  • Double chamber - Moderated valve closing (no surges )
  • Obstacle fee, full bore - Uncompromising reliability
  • Balanced seal disk
  • Major Additional Features
    • Solenoid control - 835 - 55 -M
    • Sending diaphragm *for sewage) - 835 -Md
    • Quick pressure relief valve - 83Q


835-M – High Pressure Surge Anticipating Control Valve 710-20-SOLENOID-CONTROLLED-VALVE Brochure