Swing Check Valve With Counter Weight

GMK swing check valve equipped with a counterweight is a product that is used when there is a potential for significant dampening on large-scale pipes. There is a possibility of breaking between the seat and the disc if there is an abrupt change in the direction of flow coming from the pipeline. It is the purpose of the counterweight or damper mechanism to prevent the breaking from occurring. Both horizontal and vertical installations are possible with the use of swing check valves that are equipped with a counterweight or damper.

  • Size:2inch-48inch
  • Rating:150LB,300LB,600LB,900LB,1500LB, 2500LB
  • Material:WCB, LCB,LCC, WC6,WC9, C5,C12,C12A, CF8, CF8M, CF3, CF3M, CN7M,Alloy 20,B148,UB6 ,Hastelloy C etc
  • Connection:Flanges,RTJ Flange,Butt Weld,Hub end,Groove

CE Certification

ISO Standards

Warranty Included


GMK swing check valve equipped with a counterweight is useful when the flow is unobstructed and linear across the valve, the consequent pressure loss is negligible. As the media moves through the line, the disc rotates into the open position and becomes accessible. The closed position of the disc is maintained by the presence of back pressure in the line. We propose that, while installing the valve in vertical flow lines, you spin the counterweight 90 degrees in the clockwise direction. This ensures that the damper or counterweight will be in the horizontal position when the valve is ready to be used.


  • Check valve with metal seating and a hinged disc
  • In order to prevent backflow, the valve may be installed in either the horizontal or the vertical position.
  • It is possible to attach the counterweight to either the left or the right-hand side of the valve.
  • To each other’s faces
  • Ductile cast iron was used for both the body and the bonnet.
  • Steel, stainless, for the obturator
  • The shaft is made of stainless steel.
  • The seat of the body is bronze.
  • Coating both the inside and exterior with an authorized potable epoxy coating of fewer than 250 microns.


Size 2inch-48inch
Rating 150LB,300LB,600LB,900LB,1500LB, 2500LB
Material WCB, LCB,LCC, WC6,WC9, C5,C12,C12A, CF8, CF8M, CF3, CF3M, CN7M,Alloy 20,B148,UB6 ,Hastelloy C etc
Connection Flanges,RTJ Flange,Butt Weld,Hub end,Groove
Supply Ability 10000 Piece/Pieces per Month
Port Wenzhou/shanghai
Payment Terms L/C,D/A,D/P,T/T
  • Design and Manufacture:API6D,BS1868,ANSIB16.34
  • Pressure-temperature rating: ASME B16.34
  • Face to face(end to end):ANSIB16.10,API6D
  • End Connection: 2″-24″ ASME B16.5; 26″ -42″ ASME B16.47; B.W end ASME B16.25
  • Test and inspection:API598,API6D
Can we order goods from you directly?
Yes, we look forward to receiving your order. However, please note our minimum purchase quantity. If you require smaller quantities we will be happy to arrange an individual delivery. We would be delighted to assist you.
Can I get a discount?
This depends on the specific situation, you can call directly to consult.