Non Return Butterfly Check Valve
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Non Return Butterfly Check Valve

Non return butterfly check valve is a one-way valve, is also an automatic valve, non return butterfly check valve only allows media to flow in one direction, and prevent media backflow. Non return butterfly check valve works automatically. Under the action of medium pressure flowing in one direction, the valve disc opens and the medium passes through; When the medium flows in the opposite direction, under the action of medium pressure and the self weight of the valve disc, the valve disc closes, thus cutting off the medium flow.

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Product Description

China Non Return Butterfly Check Valve Manufacturers, Suppliers and Factory with High Quality
1.Introduction of Non Return Butterfly Check Valve

Non return butterfly check valve is a one-way valve, is also an automatic valve, non return butterfly check valve only allows media to flow in one direction, and prevent media backflow. Non return butterfly check valve works automatically. Under the action of medium pressure flowing in one direction, the valve disc opens and the medium passes through; When the medium flows in the opposite direction, under the action of medium pressure and the self weight of the valve disc, the valve disc closes, thus cutting off the medium flow.


Non Return Butterfly Check Valve


2. Product features of Non Return Butterfly Check Valve


Non Return Butterfly Check Valve



  • Small size, light weight, compact structure, easy maintenance
  • The valve plate adopts dual type, which can close automatically under the elastic force of spring
  • Due to the quick closing action, the medium backflow can be prevented
  • The valve body has small length and good rigidity
  • Safe and convenient, can be used for horizontal and vertical installation



3.Technical date of Non Return Butterfly Check Valve

Name
Butterfly Check Valve
DN (mm)
50 ~800
PN (mm)
1.0~2.5
Slowly-closing time
3~60s
Applicable Medium
Clean water,sewage and seawater
Connection
Wafer
Design temperature
0~80℃
Design standard
Face to Face is according to ISO Standard
Inspection and Test Standard
API598


4.Material of Non Return Butterfly Check Valve

Body
Cast iron or Ductile iron
Disc
Ductile iron with zinc plated or AL-bronze/stainless steel
Stem
Stainless Steel
Spring
Stainless steel
Rubber gasket
NBR/EPDM


5.Application of Non Return Butterfly Check Valve

Non return butterfly check valve is composed of valve body, disc, stem, spring and other parts, which are connected by double clip. Due to the short closing stroke of the disc and the spring loading, the phenomenon of water hammer can be significantly reduced.
The non return butterfly check valve is mainly used in water supply and drainage pipes of cities, industries and high-rise buildings to prevent reverse flow of medium. Because its structural length is shorter than that of general check valves, it is more suitable for places with limited installation space, and can be only installed horizontally.

Non Return Butterfly Check Valve


6.About MST

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