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DUOJET® Combination Air Valve

The GA Industries DUOJET® is a high performance “triple function” combination air valve that efficiently vents air during pipeline filling, rapidly admits air during pipeline draining, and continually releases air pockets while the system is operational. Its simple design employs only two moving parts and its corrosion resistant fusion bond epoxy coated ductile iron and stainless steel construction provides long term reliable operation.

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General information

Product features and benefits

  • Fusion bond epoxy coated ductile iron body and cover
  • Only two moving parts, no linkages to bind or break
  • Stabilized float, vents air at up to sonic velocity without blowing shut
  • Seals tightly to 5 PSI, low pressure seating to 1.5 PSI available
  • Stainless steel cover fasteners
  • Working pressure up to 500 PSI
  • NSF/ANSI 61 certified for contact with drinking water


  • Full compliance with AWWA C512
  • Available 2” to 6”, ANSI Class 150 or 300 flanged inlet
  • Ductile iron body and cover, fusion bond epoxy coated
  • Type 316 stainless steel float
  • EPDM seats
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9025 Marshall Road
Cranberry Township, PA 16066
United States
+1 724-776-1020 +1 724-776-1254 Write e-mail