Air/Vacuum Wastewater Valves

Air/Vacuum Valves, often referred to as "large orifice valves", are used to allow large volumes of air to be exhausted from or admitted into a water pipeline as it is being filled or drained. When draining the pipeline, the float drops, allowing air to enter, preventing loss of pressure, possible pipeline collapse and damaging water column separation.


Product Overview

  • Available in sizes 1" - 8"
  • Exhausts large quantities of air at system start-up
  • Provides pipeline vacuum protection
  • Admits large quantities of air to prevent loss of pressure during power failures, line breaks and drainage
  • Manufactured under a certified ISO 9001 quality system
  • Automated Sizing Program

  • Features

  • Extended body with sloped bottom
  • Fusion Bonded Epoxy slick coat available - to prevent clogging
  • Available in light weight all stainless steel construction to eliminate corrosion
  • Dual float assembly - for positive seating
  • Unconditionally guaranteed T316 stainless steel floats
  • Stainless steel 316 internal trim
  • Exclusive high/low pressure resilient seating
  • Full pipe size inlets and outlets provide maximum protection

  • Certifications

  • Meets AWWA C512 requirements
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    Valve Size Product Description Drawing Number
    1" - 8" Wastewater Air/Vacuum Valve VM-300-S

     

    Valve Size Product Description Drawing Number
    1" - 3" 301A Wastewater Air/Vacuum Valve - Threaded VM-301A-M
    1" - 3" 301A Wastewater Air/Vacuum Valve - Threaded SuperValve VM-301ADISV-M
    1" - 3" 301AS Wastewater Air/Vacuum Valve - Threaded - All Stainless Steel VM-301AS-M
    4" - 8" 304 Wastewater Air/Vacuum Valve - Flanged VM-304-M
    4" - 8" 304AS Wastewater Air/Vacuum Valve - Flanged - All Stainless Steel VM-304AS-M

     

    Valve Size Product Description Drawing Number CAD Version
    1" 301A Wastewater Air/Vacuum Valve with Screwed Outlet VMC-301A CAD-301A
    2" 301AS Wastewater Air/Vacuum Valve with Screwed Outlet -All Stainless Steel VMC-301AS CAD-301AS
    2" - 3" 302A Wastewater Air/Vacuum Valve with Screwed Outlet VMC-302A CAD-302A
    2" - 3" 302AS Wastewater Air/Vacuum Valve with Screwed Outlet - All Stainless Steel VMC-302AS CAD-302AS
    4" - 6" 304 Wastewater Air/Vacuum Valve with Screwed Outlet VMC-304 CAD-304
    4" - 8" 304AS Wastewater Air/Vacuum Valve with Screwed Outlet -All Stainless Steel VMC-304AS CAD-304AS
    8" 308 Wastewater Air/Vacuum Valve with Flanged Outlet VM-308  
    Severe Service Application Valves
    1" 301A Wastewater Air/Vacuum Valve VMC-301ABW CAD-301ABW
    2" - 3" 302A Wastewater Air/Vacuum Valve VMC-302ABW CAD-302ABW
    4" - 8" 304 Wastewater Air/Vacuum Valve VM-304BW

     

    Valve Size Product Description Drawing Number
    1" - 8" Wastewater Air/Vacuum Valve WAVV-OM1
    1" - 8" Wastewater Air/Vacuum Valve - Spanish WAVV-OM1-SP

     

    Product Description Drawing Number
    Theory, Application and Sizing of Air Valves White Paper
    Application Chart Chart
    Venting Capacity for Air/Vacuum Valve Orifice Sizes SS-1580
    Why an Air/Vacuum Valve Stays Closed SS-1515
    Wastewater Air/Vacuum Valve Pipe Installation CAD - PDF
    Wastewater Valve Vault Installation CAD - PDF

    Air Valve Brochure