• Fully approved to AS5071 standard for control valves
  • Fully approved to AS4020 standard to potable water
  • Fully approved to water mark standard for inclusion in buildings


The Model 735-M Surge Anticipating Valve is an off-line, hydraulically-operated, diaphragm-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 735-M smoothly closes drip tight as quickly as the relief feature allows, while preventing closing surge. The valve also relieves excessive system pressure.

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