Bermad IR-435 Surge Anticipation Valve

The model No 435 Surge Anticipation Valve is an off line , hydraulically operated diaphragm actuated control valve. The valve sensing the line pressure, opens in response to the pressure drop associated with the rapid pump stoppage. The pre opened valve dissipates the returning high pressure wave, eliminating the surge.

The model 435 closes drip tight as quickly as the relief feature allows, while preventing closing surge. The valve also acts as a quick pressure relief valve responding to sudden increases in the line pressure.

The following details relates to the technical specifications of the valve and components.

• Basic Valve Type : Bermad 400 series globe style hydraulic single chamber valve
• Valve rating : 1600 Kpa max pressure 40Kpa minimum opening pressure
• Valve material : Epoxy coated cast iron with rubber diaphragm
• Valve Model : Model No IR-X-ASTE-435
• Low Pressure Pilot : #2 Bermad pilot with grub screw removed on port Z
• Pressure rating : 1600Kpa maximum pressure
• Spring range : 100-1250 Kpa adjustment
• Rotation of bolt : One rotation = 190Kpa approx
• High Pressure Pilot : #3 Bermad pilot
• Pressure rating : 1600Kpa maximum pressure
• Spring range : 100-1250 Kpa adjustment
• Rotation of bolt : One rotation = 190Kpa approx
• Tubing : 3/8” copper with brass fittings (HP nylon optional)
• Gauge : 0-1600Kpa dual scale 65mm liquid filled ¼” BSP inlet