GMK Swing Check Valve

A GMK swing check valve consists of a disc that is attached to a hinge or shaft that can swing back and forth. The disc can slide off the seat in order to allow water to flow in one direction, and then it can slide back onto the seat in order to prevent water from flowing in the opposite way. The capability of the valve to close is impacted by the mass of the disc as well as the flow rate when operating in reverse. Check valves are actuated by a lever and a weight or by a lever and a spring. It is usual practice to attach a lever in conjunction with a weight or a spring in order to achieve the highest possible level of efficiency. Installing a lever and weighted swing check valve is recommended whenever there is a possibility of water hammer occurring at normal flow rates in a given environment. If you have high pressure, low back pressure, and a high flow rate, your best option is a lever and external spring swing check valve. This type of check valve has the ability to swing open and close quickly. It is important to keep in mind that a swing check valve’s disc does require occasional cleaning, which means that the valve is not completely maintenance-free. A lever is generally installed in order to facilitate simple visual inspection as an additional convenience. As a result of this, swing check valves are frequently utilized in locations that are frequently visited by people.

  • Size:2″~48″
  • 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



  • The components of a swing check valve are assembled on the inside of the valve body, so they do not extend outside of it in any way. The sturdy design of a single unit works to keep an exterior leak from occurring by sealing a swing check valve. A degree of freedom in a range of 360 degrees is provided by the disc on a swing check valve, and micro-positioning correction is also provided. When there is no flow, the disc is pulled inward by gravity.
  • Swing check valves are typically used as stoppers in toilets, as well as in firefighting equipment and sewage systems for the prevention of flooding.
  • The most significant advantage provided by swing check valves is the low cost at which they are sold, which enables them to be included in the spending plan for any project.
  • The water hammer is a pressure surge or high-pressure shock that occurs as a result of a fluid’s motion being forced to change direction or rapidly stop. Swing check valves present a significant challenge because of the water hammer. In a plumbing system, the sound can be described as either banging or knocking. The force that is created when there is a shift in the momentum of a fluid is called a water hammer, and it can induce pressure spikes in piping systems that are greater than the pressure that was intended for those systems.



  • Bolted bonnet cap
  • Swing type, anti-rotation disc
  • Renewable seat ring
  • Non-penetrate disc shaft
  • The disc can be opened fully with a very small pressure differential
  • Rocker and hinge pin use inside-set design, reduce outer leakage point
Size 2″~48″
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
Delivery time 7-10 Working day
  • 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
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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.