Double Orifice Air Release Valve - China

Basic information The double orifice air release 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 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 The double orifice air 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 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.

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 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.

Company Contact:

• Posted By: ZhengFeng Valve Group

• Phone: 13816296699

• Address: Caoan Road 3999#, JiaDing District, Shanghai, China , jiading , shanghai , China

• Email:

• Website: https://www.zhengfengvalve.com

• Business Description: ZhengFeng Valve Group, founded in 1991 with focus on manufacturing Water valves, including control valves, balancing valves,gate valves, butterfly valves, check valves, and air valves.
  
  Valve sizing 1/2” to 88”, rating BS 10bar through BS 25bar, served covering buildings & construction，waterworks ，fire protection and many other fields.
  
  Zhengfeng has excellent product quality and sound managing system.
  
  We have certificates of ISO9001, ISO14001,ISO18001,WRAS， FM，API 6D, CE, TS, and Sanitary Certificate for Drinking Water Equipment.
  
  Meanwhile, our products are insured by PICC.
  
  Besides, we are member of China Valve Industry Association, China Fire-proof Association and Water Supply and Sewage Engineering Division of China Construction Metal Structure Association, and having long-term cooperation with China National Chemical Equipment Corporation (CNCE) and China Petroleum & Chemical Engineering Survey and Design Association（CPCESDA）.
  
  After development of 26 years, today the company supplies products to more than 30 countries and regions in the world and becomes one of the leading suppliers of water valves in China.