Triple function air valve high flow 430m³/h + low flow 5m³/h

Triple function air valve high flow 430m³/h + low flow 5m³/h

RANGE / MARK ®
AIR VALVES
PRODUCT FAMILY
PIPELINE PROTECTION
PIPELINE PROTECTION
Main features

The triple function high flow (430 m3/h) and low flow (5 m3/h) is available in DN80, DN100 & DN150.

Maxi pressure 16 bar. Flange ISO NP10.

  • Functions of the air valve :

Air outlet with high flow : pipeline filling Air blowing-off in pressure : pipeline in normal service Air inlet with high flow :pipeline draining

  • 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.

Function

1- Pipeline filling

Air outlet with high flow

2- Gas elimination

During exploitation

3- Pipeline draining

Inlet with high flow

Material and coating

ItemDesignationMaterialCoatings

1

Body

A40 steel

Epoxy 250 microns

2

Clapet grand orifice

PVC

3

Gasket

Polyurethane

4

Outlet bend

Steel

Epoxy 250 microns

5

Bolts

Stainless steel

6

Stem guide

PVC

7

Ball floats stem

Polyethylene

8

Ball floats

Polyethylene

9

Draining plug

Zinc coated steel

Check valve option

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

Security system by excessive flow option

During the pipeline filling and when the pumps stop, the security system limits the water hammer in limiting the air exit with high flow by an automatic valve. The adjustment of the valve activation id defined by the user in the order (on request)

Characteristic curve flow/pressure

Air inlet in L/s

Pressure in m/ce

Subpressure in m/ce

Air outlet in L/s

Marking

The label indicates the hydraulic characteristics and the manufacturing code

Installation, put into service, maintenance

  • 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).
  • The nozzle can be connect in his superior part to a pipe.

Solutions