Well Service Air Valves

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.

Product Overview

  • Available in sizes 1/2"-3" equipped with Dual Port Throttling Device
  • 4" and larger equipped with Regulated-Exhaust Device mounted on the inlet
  • Regulates the exhaust of air on pump start-up
  • Admits air to protect pump and mechanical seals
  • Protects against air-related surges on pump start-up
  • Manufactured under a certified ISO 9001 quality system
  • Automated Sizing Program

    • 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

    • Certifications

  • NSF/ANSI 61 Certified for Drinking Water
  • Fully complies with AWWA C512
  • UL Listed for fire pump service - 2" and 3"

    •  

    Valve Size Product Description Drawing Number
    1/2" - 12" Well Service Air Valves VM-100ST-S
    2" - 3" Fire Protection Well Service Air Valves VM-102ST-S

     

    Valve Size Product Description Drawing Number
    1/2" - 3" 100S Air/Vacuum Valve VM-100S-M
    1/2" - 3" 100WS Well Service Air Valve VM-100WS-M
    1/2" - 3" Dual Port Throttling Device VM-5DPT-M
    4" - 12" 1200S Regulated Exhaust Device (RED) VM-1200S-M

     

    Valve Size Product Description Drawing Number CAD Version
    1/2" - 3" 100ST Well Service Air Valve - with Dual Port Throttling Device VM-100ST  
    1/2" - 3" 100WS Well Service Air Valve VM-100WS  
    1/2" - 3" Dual Port Throttling Device VMC-5DPT CAD-5DPT
    4" - 12" 104SS Surge-Suppression Air Valve VM-104SS  

     

    Valve Size Product Description Drawing Number
    1/2" - 3" Well Service Air Valve WSAV-OM1
    4" - 20" Well Service Air Valve SSAVV-OM1

     

    Product Description Drawing Number
    Well Service Air Valve Guide for Vertical Pumps AEG302
    Well Service Air Valve Sizing SS-1018
    Application Chart Chart
    Air Valves for Fire Protection Service White Paper
    Well Service Air Valve Installation - 1/2" - 3" CAD - PDF
    Well Service Air Valve Installation - 4" - 20" CAD - PDF
    Well Service Air Valve Installation CAD - PDF

    Well Service Air Valve Brochure