BERMAD CS. Ltd.

Surge Anticipating Valve

Surge Anticipating Valve

The Model 735-55-M Surge Anticipating Valve with Solenoid Control is an off-line, hydraulically operated, diaphragm actuated valve. The valve immediately opens in direct response to any power failure even prior to the pressure drop associated with abrupt pump stoppage. The pre-opened valve dissipates the returning high pressure wave, eliminating the surge. The Model 735-55-M, sensing line pressure, smoothly closes drip-tight as quickly as the relief feature allows, while preventing closing surge. The valve also relieves excessive system pressure.

PRODUCT FEATURES & BENEFITS

• Replaces surge air vessels
• Relieves surge, fail-safe open
• Minimal maintenance
• Economy of space
• Lower investment and maintenance costs
• Especially economic for higher pressure ratings
• Solenoid controlled
• Low cost wiring
• Wide range of pressures
• Line pressure driven
• No motor required
• 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

Typical Applications

In this system, a pump battery supplies the main line through a manifold. The Model 735-55-M:

• Eliminates surge upon power failure
• Provides surge free switching between “on-duty” pumps.
• Closes smoothly according to pilot setting

The solenoid control is especially advantageous when:

• Static pressure is lower than 3 bar (45 psi)
• Discharge line is short and wave critical time is less than 3 seconds.
• Electric control is preferred due to maintenance considerations.