Combination Clean Water

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.

SIZE

PRESSURE

Material

1″ – 20″

Upto 740 psig (5100 kPa)

ASTM A126 Class B cast iron for Class 125 and Class 250 valves.
Class 300 ductile iron valves shall be constructed of ASTM A536 Grade 65-45-12 ductile iron. Dual Body Class 300 steel valves shall be constructed of ASTM A216 Grade WCB cast steel.

Benefits and features

The valve body and cover shall be constructed of ASTM A126 Class B cast iron for working pressures up to 300 psig. Higher pressure rated valves shall be constructed of ASTM A536 Grade 65-45-12 ductile iron.

Unconditionally guaranteed T316 stainless steel floats
Simple Lever and Compound Lever Models
Stainless steel 316 internal trim
Resilient seating for positive shutoff
Performance proven for over 40 years

All Air (Release, Vacuum, etc) Valves installed in vaults or flood prone locations shall include an inflow preventer to
prevent the introduction of contaminated water through the air valve outlet. The inflow preventer shall allow the admittance
and exhausting of air while preventing contaminated water from entering during normal operating conditions. The inflow
preventer shall be flow tested by an independent third party to certify performance. The third party shall be an approved
testing lab of the American Society of Sanitary Engineers.