Hydraulic Non Slam Check Valve - China

Basic Information This non slam check valve prevents backflow of media and reduces water hammer to achieve the safe and quiet effect.

Features The no slam check valve has features as follows:

1 - Small fluid resistance, large flow;

2 - Automatic control using medium energy;

3 - Prevent water hammer phenomenon;

4 - Slowly-closing silencing.

Principle When the pipe supplies water from the inlet end of the valve, the water from the needle valve and one-way valve enters the valve cover control room and then is discharged downstream through the ball va lve.

Due to the small opening of the needle valve, the discharge speed of the control room is greater than that of the inlet to replenish water, thus reducing the pressure in the control room.

The inlet pressure acting under the main valve disc all the time lifts the main valve disc, thereby opening the main valve disc and supplying water downstream.

When the pipeline stops supplying water, the downstream water begins to flow back.

Due to the effect of the one-way valve, the backflow water cannot flow out after entering the valve cover control room through the ball valve.

As a result, the pressure of the valve cover control room increases gradually and the main valve disc is closed tightly.

Installation and Commissioning Needle valve and ball valve adjust together to get the best opening or closing speed.

For specific use, please consult ZhengFeng Valve Group.

Product scope, Standards & Materials Size Range: 2"~24"

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

ZhengFeng is an non slam check valve manufacturer, offering non slam valve, also called anti slam check valve to meet your need

Part Material Standard Body Ductile Iron EN 1563/DIN 1693 Bonnet Ductile Iron EN 1563/DIN 1693 Trim Stainless Steel 431 EN10088-1/ASTM A959 Seat Stainless Steel 431 EN10088-1/ASTM A959 Diaphragm EPDM / NBR ISO 4633 Pilot Valve Stainless Steel 431 EN10088-1/ASTM A959 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.