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Dual Plate Check Valves FABRICATED IN
Dual Plate Check Valves
FABRICATED IN
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High performance dual plate check valves.
Sizes, pressure classes and design availability to meet all requirements you need for your
applications.
Our product range includes, but is not limited to:
Size 2” to 40”
ASME Pressure Class 150 up to 1500
API 6D and API 598 pressure classes
Wafer, Lug, double Flanged and extended body design
Integral and overlay metal seats also available
End connection : Raised face, Plain face, ring Joint, Weld Ends
* Duo-Check meets or exceed these industry standards
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The view is rotated 90° to show the actual operating position of the valve. The pin must be vertical for horizontal flow
Wafer design body "W" are designed with flange less bodies with relatively short face to face dimension.
They are clamped between mating flanges which are connected by studs and nuts
Wafer type
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Lug DESIGN body “L” covers the bolting for entire length of the body.
Lug valveS are SUPPLIED in full lug and full body designs.
Lug design is SUPPLIED whenever possible to maintain the design.
Lug design is SUPPLIED possible to keep weight to a minimum.
Lug valves are furnished with throught-hole bolting in accordance with
API 594.
Threaded bolt holes are available when specified.
Lug type
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Double Flange body design “F” bolt up similar to a bolted cap swing orgate valve.
Double flanged design valves are offered as standard on larger size valveswhere the length of the body permits installation of two heavy nuts between the flanges.
These valves are standard retainer less design.
Flanged type
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Valve Coefficent CV
- Valves to comply with NACE MR-01-75
- Special testing for valves, including radiography,
magnetic particle, dye penetrant, ultrasonic, helium leak, etc.
Spring material are included in trim material as an important part of materials selection.
The most common standard trim materials are shown under Ordering Information.
CARBON STEEL WCCLOW TEMPERATURE CARBON STEEL LCCHIGHT TEMPERATURE CARBON STEEL WC6, WC9, C5, C12STAINLESS CF8, CF3, CF8M CF3M, CN7MNON FERROUS DUPLEX STAINLESS STEEL, SUPER DUPLEX STAINLESS STEEL NI-CR, NI-CU, MONLE (K400 / K500)
BRONZE-BS 1400 LG2/ASTM B62ALLUMINIUM BRONZE – BS 14000 AB2
Due to constant changes and advancements in standard and technology.We reserved our right to make changes in technical and dimensional details without prior notice
Technical data
Standard materials
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Pressure loss information
The curves show pressure drops available with standard springs and the valves in horizontal flow.
Check valves should be installed in horizontal flow pins vertical for best performance.
For other installations, contact the factory.
Technical data
