Check valve manufacturing Company 

Valvesonly is a leading and reputed Check valve manufacturer in USA.  No matter where you use them, these valves execute traditional functions in a more intelligent manner. Check valves are used for preventing the reverse flow of gas, fluid, and air in the event of a brake failure. The liquid flow is started and stopped using these self-activating relied valves. Check valves are mostly used in the industrial and water service industries. Check valves are available on our website with a choice of different attachments.

Check valves are self-activating safety valves that allow just one direction of flow for gases and liquids. A check valve’s job is to keep the flow of the process from reversing in the system, which could damage equipment or disrupt the operation. One-way directional valves are what they’re called. Check valves are often used to safeguard liquid pumps and gas compressors from backflow, which could cause the pump or compressor to shut down. They’re also used in process systems with multiple pressures that need to be maintained separate. They work without the usage of external power since they rely on the pressure drop caused by the medium flow.

Available materials: Cast iron, Ductile iron, WCB, LCC, CF8M, SS304, SS316, SS316L, ASTM A105N, ASTM A182Gr-F304, ASTM A182Gr-F316

Class: 150 to 2500

Nominal Pressure: PN10 to PN450

Size: 1/2” to 40”

Ends: Flanged, Wafer, lug, Threaded, Buttweld, Socketweld

Applications of check valves:

Backflow is prevented and pressure is maintained with the use of check valves. They’re frequently employed as a backup in the event that a pump fails, to assist compressors and reciprocating pumps, and when the system pressure exceeds the primary equipment’s capabilities. Check valves are used in various industries including refining, petrochemical, chemical, and oilfield operations, as well as water, steam, refining petro, and viscous fluids. Check valves are also popular in waste-water management and manufacturing systems.


  • Swing check valve.
  • Wafer check valve.
  • Ball check valve.
  • Lift check valve.
  • Dual plate check valve.
  • Silent check valve.
  • Non slam swing check valve.
  • Tilting disc check valve.
  • Pressure seal check valve.

Advantages of check valves:

  • Prevents backflow.
  • Maintains pressure.
  • Serves as backup system.

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  • Pressure Seal Swing Check Valve

    Pressure Seal Swing Check Valve Body: WCB, WC1, WC6, WC9 Disc: WCB, WC1, WC6, WC9 Hinge: WCB, WC1, WC6, WC9 Seat: A105, F22 Gasket: SS316+Graphite Bonnet: A105, F22 Washer: F316 Sealing Ring: Mild Stainless Steel Nominal Diameter: DN65 to DN350 Nominal Pressure: Class1500 to Class2500 Design and Manufacture Standard: API6D, ASME B16.34 Face to Face […]