Well Service

Well Service Air Valves are a member of the Air/Vacuum family and are used with vertical pumps. Well Service Valves are specifically designed to vent the air from the pump column during pump start-up in a controlled manner before the check valve opens to reduce pressure surges that result from the accelerating water column.



1/2″ – 12″
150 psig (1000 kPa)
ASTM A126 Class B cast iron
Benefits and features


  • Unconditionally guaranteed 316 stainless steel floats
  • Inlets and outlets are equal to full nominal pipe area
  • Dual Port Throttling Device
  • Adjustable discharge outlet provides regulated air exhaust
  • Allows air to enter the system on pump shut down through an unrestricted independent vacuum port
  • Regulated-Exhaust Device
  • Restrictor disc provides regulated exhaust to limit pump column surges
  • Ability to adjust air exhaust for greater surge suppression
  • Provides full vacuum flow port

Air Release Wastewater

Air Release Wastewater
Air/Vacuum Clean Water Valves
Air/Vacuum Clean Water Valves
Air/Vacuum Wastewater Valves
Air/Vacuum Wastewater Valves