• Dutco Tennant LLC, PO Box 233, Dubai, U.A.E.

Description

Check valves are self-activating safety valves that permit gases and liquids to flow in only one direction. The purpose of a check valve is to prevent process flow from reversing in the system which could damage equipment or upset the process. They are classified as one-way directional valves. they are available in various material of construction like Carbon Steel, Stainless Steel, Exotic Steel Material.

Check Valves are available in various type depending on the Application used they are Lift Type, Swing Type, Non-Slam, Dual Plate, Tilting Disc, Etc.

Check Valves are used in many industrial applications including Petrochemical, Oil & Gas, Pipelines, Power, Tank Farms, Allied process and also services such as corrosive and cryogenic.


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Construction
  • Size: ½” to 2”
  • Rating ANSI Classes 800, 1500 & 2500
  • Piston Type, Bolted Cover, Reduced Bore
  • Design Std: BS5352, Testing Std: BS 6755 Part I
  • Face to Face as per Manufacturer Standard
  • End Connection : Screwed NPT(F)/ Socket Weld / Butt Weld End
Others on Request
  • Full Bore Construction
  • Welded Cover
  • Swing Type/ Ball Type
  • High Temp./ Cryogenic Service
  • All Exotic Materials (Hastelloy/ Incoloy/ Superduplex)
Construction
  • Size: 2” to 36” (150#), 2” to 24” (300# & 600#) -Swing Type, Bolted Cover, Standard Bore
  • Size: 2” to 16” (900# & 1500#), 2” to 12” (2500#) - -Swing Type, Pressure Sealed Cover, Standard Bore
  • Design Std: BS 1868/ ANSI B 16.34, Testing Std: BS 6755 Part I
  • Face to Face as per ANSI B 16.10
  • End Connection : Flanges Drilled to ANSI B16.5 upto size 24”& ANSI B16.47 series A/B for size above 24”, RF Serrated. Ring Joint Facing (RTJ)/ Butt Weld Ends
  • NACE as per MR-01-75
Others on Request
  • API 6D Design
  • Ring Joint Facing (RTJ)/ Butt Weld Ends
  • Tilting Disc Type
  • Counter Weight/ Lever, Dash Pot Arrangement
  • High Temp./ Cryogenic Service
  • All Exotic Materials (Hastelloy/ Incoloy/ Super duplex/ Al. Bronze)
Construction
  • Size: 2” to 48”
  • Rating : ANSI Classes 150# - 1500#
  • Double Disc, Retainerless Design
  • Less pressure Drop across the Valves
  • Design Std: API 594/ API6D, Testing Std: API 598
  • Face to Face as per API 594
  • End Connection: Wafer/ Lugged/ Double Flanged, suitable to mount between ANSI/ BS/ DIN Flanges.
  • NACE as per MR-01-75
Others on Request
  • Internal Rubber Lined
  • Soft Seat : Rubber/ PTFE
  • All Exotic Materials (Hastelloy/ Incoloy/ Super duplex)
Construction
  • Size: 2” to 64”
  • Rating : ANSI Classes 150#, 300#
  • Single Flap Disc, Quick Closing Action
  • Less pressure Drop across the Valves
  • Design Std: API6D, Testing Std: API 598
  • Face to Face as per API 594
  • End Connection: Wafer type suitable to mount between ANSI/ BS/ DIN Flanges.
Others on Request
  • Rubber Lined Flap type Valve
  • All Exotic Materials (Hastelloy/ Incoloy/ Super duplex)
  • Body : DI/A105/ WCB/ LCB/ LF2/ CF8/ F304/ CF8M/F316/ Duplex
  • Trim : DI/ 13% Cr/ Stellited/ SS304/ SS316/ Duplex
  • Gasket : Sp. wound SS304+Graphite / PTFE