Non Return Check Valve with Dual Plate in Cast Iron , Wafer Type ,
Dual Plate Check Valve
The dual Plate Check Valve is an all purpose non return valve that
is much stronger, lighter in weight and smaller in size compared to
a conventional swing check valve or life check valve.
The Dual Plate Check Valve employs two spring-loaded plates hinged
on a central hinge pin. When the flow decreases, the plates close
by torsion spring action without requiring reverse flow. This
design offers the twin advantages of No Water Hammer and Non Slam
simultaneously. All features put together make the Dual Plate Check
Valve one of the most efficient design. It is also referred as SILENT CHECK VALVE.
The valve dual plate check valve design conforms to APS 594 as well
as API 6D except face to face dimensions of ANSI 125 cast iron
valves of sizes 65mm (2½”) to 600mm (24”). Valve inspection and
testing conforms to API 598.
MVS Dual Plate Check Valves are available in wafer design, flanged wafer design and extended
design with flanged ends having face to face dimensions as that of
a swing check valve.
Design & Testing International Standard of Dual Plate Check
|Design Standard||API 594 / API 6D Standard|
|Inspection & Testing Standard||API 598|
|Flange To Flange Distance||As Per ANSI B API 594 / API 6D / ANSI B 16.10|
|End Connection||Wafer Type, Flangeless, Sandwich Pattern|
|Suitable to mount between two flanges.|
|Manufacuring Size Range||3″ (DN80) to 24″(DN 600)|
|Pressure Rating of Valve||150# / 300#|
|PN 10 / PN 16 / PN 25 / PN 40|
MOC (Bill of Material – BOM)
|Body & Disc Material||ASTM A 126 GR. B / IS 210 GR. FG 200/220/260 (Cast Iron) / Ductile
Iron / Nodular C.I.|
|ASTM A 216 GR. WCB (Cast Carbon Steel)|
|ASTM A 351 GR. CF 8 / CF 8M (SS 304 / SS 316)|
|ASTM A 351 GR. CF 3 / CF 3M (SS 304L / SS 316L)|
|ASTM A 351 GR. CN7M / ASTM A351 Gr. CF8C|
|ASTM A351 Gr. CD4Mcu / ASTM A351 Gr. CK3MCuN|
|ASTM A352 Gr. LCA / LCB / LCC|
|ASTM A217 Gr. WC1 / WC6 / WC9 / C5 / C12|
|ASTM A494 Gr. CW6MC / CW2M / CY40 / CU5MCuC|
|NACE MR0175 / NACE MR|
|Seat Material||Soft Rubber Seat for Zero Leakage|
|Neoprene / EPDM / NBR / Bun – N / Viton / Silicon|
|Metal to Metal Body Disc Face contact seat|
|Stellited F6 Hard Face|
|Hinge Pin / Stem||ASTM A 276 T – 304/316 (Stainless Steel 304/316)|
|ASTM A 276 T – 304L/316L (Stainless Steel 304L/316L)|
|Alloy 20 / Duplex Steel Steel / Super Duplex Steel|
|Hastelloy C / Hastelloy C 276|
|Spring||Inconel X 750|
Light Weight thus easier handling and self supporting.
More compact & Structurally sound design.
Same valve can be installed horizontally or vertically.
Only Check Valve which can be installed for flow upside down due to
spring assisted closure.
Low Pressure Drop and reduced Energy Loss irrespective of Pressure
Streamlined flow – way.
Efficient and Positive sealing under most flow and pressure
conditions. Valve close before flow reversal, at zero velocity.
Inherently Non-Slamming. No external devices / attachments
Water Hammer almost non-existent.
Long life and trouble-free operation.
Non Check Valve Drawing
If you require other sizes and valve design standards, please send
email to email@example.com to get the drawing.
Valve Packing with Plywood
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