Check Valves

Check Valves

2″ ~ 36″ | Class 150, 300, 600
2″ ~ 18″ | Class 1500, 2500
¼” ~ 2″ | Class 4500

Our specialty check valves are engineered to meet the complex and rigorous specifications required by the petroleum and chemical industries. Piston, ball or swing check with full port or standard port. Designed to perform reliably under extreme conditions, they are suitable for high-temperature, high-pressure, abrasive, corrosive, and scale-forming media.

We offer solutions for non-standard requirements, including hard-to-find sizes, uncommon geometries, and tight tolerances. All valves can be supplied with comprehensive testing and certification, including ultrasonic, radiographic (RT), dye penetrant (PT), micro-corrosion, Positive Material Identification (PMI), hot tensile, impact, and other industry-specific tests.

 

Check Valve Portfolio

SWING CHECK VALVE

  • DN 15 ~ DN 50,  ½” ~ 2”
  • Class 150, 300, 600, 900, 1500, 2500

Standards:

  • Working Pressure 200psi.
  • API6D/ISO14313 also available
  • ASME / ANSI B1.20.1 (NPT); DIN 259 / DIN2999; ISO 225; BSP; PT.

Premium Graphoil spiral wound gaskets for high pressure/temperature services; other gaskets available.

Lift check valve seat integral and stellite faced, for longer service.

Swing check valve seat stellited for longer service and renewable.

Tapered discs and seats to minimize slamming of discs, ensuring longer wear.

Body ribs to ensure positive grip by pipe fitter’s wrench for screwed valve installations.

Oblique and angle pattern valves are available.

BOLTED COVER CHECK VALVE

  • Class 150 | Size 2″ ~ 36″
  • Class 300 | Size 2″ ~ 20″
  • Class 600 | Size 2″ ~ 16″
  • Class 1500 | 2500, Size 2″ ~ 8″

Swing check valve with bolted cover.

Renewable disc and seat.

PED Quality standard MSS SP55, all wetted component material meet NACE MR0175 / ISO15156, & NACE MR0103 / ISO7945, ATEX where applicable.

Industries: Oil & Gas, Chemical & Petrochemical, Pulp & Paper, Energy and Renewable, Mining, Special fluids transport.

FLANGED CHECK VALVE

  • Size ½” ~ 12″ | DN 15 ~ DN300
  • Class 150, Class 300, Class 600

Standards:

Valve design according to ASME/ANSI B16.34 , BS 1868.
Shell wall Thickness according to ASME/ANSI B16.34 class 150.
Pressure – temperature rating according to ASME/ANSI B16.34.
Face to Face according to ASME/ANSI B16.10 class 150 RF.
Flanged dimension according to ASME/ANSI B16.5 class 150 RF, Finish 125-250 AARH.
Pressure testing according to API 598.

Available in CF8M (316), CG8M (317), 254 SMO, Titanium, and many other options.

PRESSURE SEAL CHECK VALVES

  • Class 900 | Sizes 2″ ~ 16″
  • Class 1500 | Sizes 2″ ~ 16″
  • Class 2500 | Sizes 2″ ~ 12″

Swing Check Valve, pressure seal cover. Optional renewable disc and seat.

Standards:
PED Quality standard MSS SP55, all wetted component material meet NACE MR0175 / ISO15156, & NACE MR0103 / ISO7945, ATEX where applicable.

Industries: Oil & Gas, Chemical & Petrochemical, Pulp & Paper, Energy and Renewable, Mining, Special fluids transport.

WELDED BONNET CHECK VALVES

  • Class 1500 | Sizes ¼” ~ 2″
  • Class 2500 | Sizes ¼” ~ 2″
  • Class 4500 | Sizes ¼” ~ 2″

Full and standard port in T Type or full port Y Type

Standards:
ASME B16.34 – BS 5352
API 598

WAFER CHECK VALVES

DN40 ~ DN300 | Class 150

DN40 ~ DN300 | Class 300

Available with hydraulic counter weight for slow closing.
Lever counter weight is available on larger dimensions.

Do You Need Further Information?

Please go to the download page and find the information sheet for each product.
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