Diaphragm valve WW-735-M

hydraulically-operatedregulatingfor water

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. Replaces surge air vessels Relieves surge, fail-safe open Minimal maintenance Economy of space Lower investment & maintenance costs Especially economic for higher pressure ratings Line pressure driven Independent operation No motor required Long term drip tight sealing Adjustable hydraulic actuation Double chamber Moderated valve closing (no surges) Protected diaphragm In-line serviceable – Easy maintenance Obstacle free, full bore – Uncompromising reliability Balanced seal disk – High flow capacity In this system, a pump battery supplies the main line through a manifold. The Model 735-M: Eliminates surge upon power failure Provides surge free switching between “on-duty” pumps Closes smoothly according to pilot setting