|Place of Origin:||China|
|Brand Name:||AFC OEM|
|Minimum Order Quantity:||1|
|Packaging Details:||Plywood cases|
|Delivery Time:||45-60 days|
|Payment Terms:||L/C, T/T|
|Supply Ability:||Based on order|
|Material:||Ductile Iron GJS500-7||Internal Parts:||SS316|
|Coating:||Fushion Bonded Epoxy||Flow Area:||Full Flow Area|
wastewater air release valve,
sewage air valve,
Founded Large Air Release
Sewage Combination air release valve provide 3 functions:
1. Large air release
1-1. During water filling the pipeline, float will stay at its original position. (open)
1-2. Let large air out of valve thru big nozzle.
2. Small air release
2-1.When the water level comes up to the top, float will be up to its close position and close the sealing arc- big orifice and small orifice.
2-2.The air (2% of solved air in water ) are continuously coming out from water and gather at the top of the valve.
2-3.The float will be driven down and let small pocket out thru small orifice.
2-4.The sealing arc will still be in close position until empty of water
3. Large air intake during draining of the pipeline.
3-1.Float will drop down when empty of pipeline.
3-2.Large air will come into the pipeline thru valve.
3-3.Preventing from collapse of pipeline and break vacuum.
3-4.Protect the sealing o-ring from clogging in the pipeline.
. Advanced design: Simple mechanism and strong float to prevent cracking during sudden water hammer& quick closure.
. 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.
For sewage water system.
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.
|Quick Selection Table|
|Water Flow Rate
|Main pipe size
|Size of SKAR
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