Air Release Wastewater Valves

Air Release Valves, sometimes referred to as "small orifice valves," are often fitted at the highest point on a pipeline to continually release unwanted air during system operation to protect against unwanted surges and maintain system efficiency.

Product Overview

  • Available in sizes 2" - 4"
  • Tested to AWWA C512 requirements
  • Maintains systems flow efficiency
  • Releases unwanted air pockets during system operation
  • Protects system against air related surges
  • Manufactured under a certified ISO 9001 quality system
  • Automated Sizing Program

Features

  • Specifically designed for grit and sewage service without the need for backwashing when combined with fusion bonded epoxy slick coatings
  • Bodies are extended in length with a sloped bottom to prevent solid material from reaching the operating mechanism
  • Floats are equipped with a specially shaped bottom to accelerate the closure to reduce leakage and clogging of the valve
  • Available in lightweight all stainless steel construction to eliminate corrosion
  • Unconditionally guaranteed T316 stainless steel floats
  • Stainless steel 316 internal trim
  • Resilient seating for positive shutoff
  • Performance proven for over 40 years

Specifications

Valve Size Product Description Drawing Number
2" - 4" Wastewater Air Release Valve VM-48A-S

Materials of Construction

Valve Size Product Description Drawing Number
2" - 4" 48A Wastewater Air Release Valve VM-48A-M
2" - 4" 48A Wastewater Air Release Valve - SuperValve VM-48ADISV-M
2" - 4" 48AS Wastewater Air Release Valve - All Stainless Steel VM-48AS-M
2" - 4" 49A Wastewater Air Release Valve VM-49A-M
2" - 4" 49A Wastewater Air Release Valve - SuperValve VM-49ADISV-M
2" - 4" 49AS Wastewater Air Release Valve - All Stainless Steel VM-49AS-M

Dimensions

Valve Size Product Description Drawing Number CAD Version
2" - 4" 48A Wastewater Air Release Valve VMC-48A CAD-48A
2" - 4" 48AS Wastewater Air Release Valve - All Stainless Steel VMC-48AS CAD-48AS
2" - 4" 49A Wastewater Air Release Valve VMC-49A CAD-49A
2" - 4" 49A Wastewater Air Release Valve - All Stainless Steel VMC-49AS CAD-49AS
2" - 4" 48A Wastewater Air Release Valve (Severe Service Application Valve) VMC-48ABW CAD-48ABW
2" - 4" 49A Wastewater Air Release Valve (Severe Service Application Valve) VMC-49ABW CAD-49ABW

Manuals

Valve Size Product Description Drawing Number
2" - 4" Wastewater Air Release Valve WWAR-OM1

Technical Data

Product Description Drawing Number CAD Version
Theory, Application and Sizing of Air Valves White Paper  
Application Chart Chart  
Why an Air Release Valve Opens (Compound Lever Type) SS-1513  
Venting Capacity for Air Release Valve Orifice Sizes SS-461  
Wastewater Air Release Valve Pipe Installation PDF CAD
Wastewater Air Release Valve Vault Installation PDF CAD