Evacuation of large quantities of air during the filling. The kinetic air/vacuum valves are specially designed so that the flow of air in evacuations reaches high velocity ( speed of sound) without the Buoy ascending for the effect of the current and stopping any premature closings until the evacuation is complete.
Purge of air during operation
Admission of large quantities of air during the emptying and draining.

Closes watertight from 0.1 bar

Connexions : threaded or flanges (cf. table)

DN : 25 to 300

Range : PN10 or PN16

Material :

Body and Cover: Ductile Iron EN GJS-500-7
Float ball and Internal Mechanisms: Stainless steel A316
Coating: Non-toxic Epoxy for drinkable water. Internal and external 200 microns thickness

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Other material/connexions and special coating available upon request

Combination Air Valve for Wastewater – 9420

La Combination Air Valve for Wastewater (trifunction) type 9420 compact is specially designed for wastewater.

It automatically performs the following three functions:

Evacuation of large quantities of air during the filling. The kinetic air/vacuum valves are specially designed so that the flow of air in evacuations reaches high velocity ( speed of sound) without the Buoy ascending for the effect of the current and stopping any premature closings until the evacuation is complete.
Purge of air during operation
Admission of large quantities of air during the emptying and draining.