Double Orifice Air Valve

A double orifice air valve is an essential component in water distribution systems that helps regulate the flow of air and release excess air or gas that can accumulate in pipelines. This type of air valve consists of two separate orifices or openings. One orifice is designed to expel air and gas from the pipeline, while the other serves as an inlet to allow air to re-enter when the pipeline is emptying or filling with water.

Main parts and materials

No
Parts
Material
1
Nut
SS304
2
Washer
SS304
3
Gasket
NBR
4
Body
Ductile iron
5
Float Ball
Wooden core, fully vulcanized with EPDM rubber
6
Stem
SS420
7
Middle plank
SS420
8
O-ring
Ductile iron
9
Right cover
Ductile iron
10
Drain coke
Brass
11
Bonnet
Ductile iron
12
Gland
Ductile iron
13
Stem Nut
SS420
14
Cap Top
Ductile iron
15
Left Cover
Ductile iron
16
Inside Cover
Ductile iron
17
Screw
SS
18
Washer
SS304
19
Bolt
SS304
20
Washer
SS304
21
Nut
SS304

Outline and Connecting Measurement

DN
D
D1
D2
B
f
n-d
H
A
80
200
160
132
19
3
8-19
244
283
100
220
180
156
19
3
8-19
270
302
125
250
210
184
19
3
8-19
323
353
150
285
240
211
19
3
8-23
323
353
200
340
295
266
20
3
12-23
401
433

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