1PC Spring Vertical Check Valve

800WOG PN40
WCB, SS304, SS316

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1PC Spring Vertical Check Valve Threaded Ends

1PC Spring Vertical Check Valve is a type of vertical check valve that is spring loaded to open and close. Vertical check valve is also called one-way valve or non-return valve, which is used to prevent of mediums back flow in the pipeline. The disc of the check valve is spring loaded, whose action depends on the mediums itself flow pressure, so the check valve is belonging to automatic valve types. Because the spring check valve is only allowed the mediums to flow in one direction, we should note the arrowhead on the check valve when mount it in horizontal position. 1pc spring vertical check valves are widely used in series of industries, especially in oil & gas filed, power plant, etc. Flowspec Luokai can manufacture the 1pc spring vertical check valve in accordance with ASME b16.34 with threaded ends of NPT, BSP, ISO and DIN standard, etc.. Welcome to contact us for detailed information and best quotes if you have any questions or inquiries.


  • One piece body structure
  • Spring loaded disc
  • Horizontal or vertical service
  • Threaded ends


  • Design & manufacturing: ASME b16.34
  • Face to face: manufacturer’s
  • Threaded ends: G, NPT, PT, Rp, Rc (ASME B1.20.1, BS21/2799, DIN2999/259, ISO228-1, JIS B 0203, ISO7/1)
  • Inspection & testing: API598


  • Pressure rating: 800PSI (PN40)
  • Size: 1/4″ ~ 3″ (DN8~80mm)
  • Materials: steel A216 WCB, stainless steel 304 (A351 CF8), stainless steel 316 (A351 CF8M)
  • Applicable medium: water, seawater, oil, gas, corrosive liquids
  • Applicable temperature: -29℃~+300℃ (higher temperature is available upon request)


  • Petroleum
  • Chemical industry
  • Pharmacy
  • Chemical fertilizer
  • Power plant
  • Textile
  • Printing & dyeing
  • Oil & gas