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High Pressure, Surge Anticipating Control Valve WW-835-M
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.
- Robust structure, piston actuated – High pressure service
- 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)
- In-line serviceable – Easy maintenance
- Obstacle free, full bore – Uncompromising reliability
- Balanced seal disk – High flow capacity
Typical Application
In this system, a pump battery supplies the main line through a manifold. The Model 835-M:
- Eliminates surge on power failure
- Provides surge free switching between “on-duty” pumps
- Closes smoothly according to pilot setting
