water supply valve

Spill Free Triple Function Full Flow Area Single Chamber Sewage Combination Air Release Valve

Description:

AFC's sewage air release valve conforms to International standard EN1074-4 and AWWA C515.
Compared with other plant air valve, ours have not only large air exhausting and large air intake under invacuum,but also one more function of small air releasing. As we know normally there is 2% air in water system,our av does not stop small air venting untill all air in valve is completely released while the top seal arc in closed status.

All internal accessories are of AISI SS316, hardness and quality are quaranteed.

There is a seal gasket in the valve above big float and it helps orifice make better sealing effect. With rubber seal gasket above float, it can absorb water hammar to avoid crash with seal arc and valve body and protect air valve from hurting.

Features:

. Spill Free.

. Drain boss at the top & bottom for cleaning.

. No arms or levers to prevent vibrating, bending, direct closure of the fl oat.
. Fully fusion epoxy coated inside and outside of valve body for long term services.
. Manufacturing standard : BS EN1074-4, AWWA C512
. Flange drilling and dimension : BS EN 1092 and BS EN 558 and ANSI flange.

Functions:

Sewage Combination air release valve provide 3 functions:

1. Large air release

2. Small air release

3. Large air intake during draining of the pipeline.

Service Fields:

For sewage water system.

Technical Data:

Size range: DN 50-200MM
Pressure ratings:1.0Mpa,1.6Mp (Flange)
Working temperature: -10°-80°C.
Flow media: sewage water.
Please consult factory for PN25 and antishock device whenever there is waterhammer issue.

Material:

Dimension: