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D-040 L

D-040 L

Combination Air Valve

Product Details


Combination Air Valve


Water transmission lines, Desalination & Sea Water, Mines, Marine - Ballast Water, Food Industry, Power Plant Cooling.

Valve Selection

12mm-50mm ( 1/2”, 3/4”, 1”, 2”)


Threaded, Flanged (50mm Only)

Product Details

The D-040L combination air valve features of both an air release valve and an air & vacuum valve incorporated into a single body. This D-040L is specifically designed to operate with liquids containing small suspended solids.

The valve is designed to automatically release small pockets of built up air to the atmosphere during operation, and also automatically discharges or admits large volumes of air during the filling or draining of a pipeline.

Product Details

Product Benefits

Long body shape

The longer body builds an air gap that separates the liquids with suspended particles from the sealing mechanism.

Dynamic Design

The dynamic design allows for high capacity air discharge while also preventing premature closure.

Rolling Seal Mechanism

The Rolling seal mechanism design is less sensitive to different pressures than a direct float seal, thus enabling a one size orifice for a wide pressure range (up to 16 bar).