AIR VALVES

Single function air valve low flow 2,2m³/h and 5m³/h

Application

Product family

Pipeline protection

The single function low flow sewage air valve (5 M3/h) is available in DN80.

Maximal service pressure 16 bar. Flange ISO PN10.

The air valve protects the pipeline by the air extraction in the pipelines high points.
The valve body, in mechanically-welded steel, is protected by oven-baked epoxy-resin thickness 200 microns. The mobile clapper/float assembly is entirely made from plastic material, neutral to any corrosive aggression by the waste water.
The use of sewage air valves is economic for the pipeline installation. By using air valves, the pipeline can follow the ground relief and avoid the cost of the necessary construction works to follow a regular pipeline profile.

Technical design

Item	Designation	Material	Coating
1	Body	A40 Steel	Epoxy 250 microns
2	Gasket	Polyurethane
3	Gasket	Polyurethane
4	Nozzle	18/8 stainless steelsteel
5	Bonnet	A40 steel	Epoxy 250 microns
6	Bolts	Stainless steel
7	Stem guide	PVC
8	Ball floats stem	Polyethylene
9	Ball floats	Polyethylene
10	Draining plug	Zinc coated steel

When the user doesn’t want air entry, a check valve can be adapted on the air outlet (on request).

Drawing flow/pressure

The label indicates the hydraulic characteristics and the manufacturing code

The manhole must be ventilated.
The sewage air valve is installed in vertical position on a shut-off valve to operate on the air valve without disturbing the pipeline.
Draining by a ¾ inch outlet.
For the maintenance or the rinsing, the complete mobile set can be extracted by the dismantling superior part (no need to dismount the air valve).