Double Orifice Air Release Valve

Double Orifice Air Release Valve

Basic information
Basic information
This valve is a pipeline will be matched equipment, apply to the temperature does not exceed 100 ℃ water, hot water pipe on the pipe from the air.
Features
Features
1. Body is provided with a shock-proof inner tube to protect the float;
2. Lower water pressure can be closed to prevent drainage;
3. When there is negative pressure, the piston quickly opens to breathe;
4. Stainless steel floating ball, long life.
Principle
Principle
This valve exhaust, buoy, by gravity pull down one end of the lever, the lever in the tilt state at this moment, in the leverage and vent contact appeared gap, air through the vent through the gap, with the air discharge, water level rise, buoy under the effect of the buoyancy of water float upwards, the lever on the seal face pressure on the porosity, gradually until the vent is completely blocked. The exhaust valve is now completely closed.
Installation and Commissioning
Installation and Commissioning
When installing, always install a protective valve on the front end to avoid stopping water from being tested. For specific use, please consult ZhengFeng Valve Group.

Part

Material

Standard

Body

Ductile Iron

EN 1563/DIN 1693

Bonnet

Ductile Iron

EN 1563/DIN 1693

Exhaust Hood

Ductile Iron

EN 1563/DIN 1693

Float Ball

Stainless Steel 431

EN10088-1/ASTM A959

Strainer

Stainless Steel 431

EN10088-1/ASTM A959

Tank

EPDM / NBR

ISO 4633

For the materials options not listed, consult factory.

ZhengFeng manufactures valves in more than 50 different alloys.

Product scope, Standards & Materials
Size Range: 2"~12"
Pressure Rating: 10bar ~ 25bar
Face to Face Dimensions: AMSE B16.10, EN558-1
Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: ISO 5208 / EN 12226-2

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