Combination Wastewater

Combination Air Valves perform the functions of an Air/Vacuum Valve (exhaust large quantities of air on start-up, admits air on shut-down) and Air Release Valves (release air continuously during operation) to maintain system efficiency and prevent pipeline surges.



1″ – 8″
 Upto 150 psig (1000 kPa)
 ASTM A126 Class B cast iron
Benefits and features

Wastewater Combination Air Valves shall be automatic float operated valves designed to exhaust large
quantities of air during the filling of a piping system and close upon liquid entry. The valve shall open during draining or if a negative pressure occurs. The valve shall also release accumulated air from a piping system while the system is in operation and under pressure. The valve shall perform the functions of both Wastewater Air Release and Wastewater Air/Vacuum Valves and furnished as a single body or dual body type as indicated on the plans.

  • Single body incorporates both features within one valve
  • More compact and economical
  • Dual body consists of two independent valves
  • Allows individual maintenance while still protecting pipeline
  • Wider range of sizing options
  • Inlets and outlets are equal to full nominal size
  • Available in light weight all stainless steel construction to eliminate corrosion
  • Unconditionally guaranteed T316 stainless steel floats
  • Stainless steel 316 internal trim
  • Exclusive high/low pressure resilient seating
Stainless Steel Wastewater

Air Release Wastewater

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