Lift Check Valve
Lift Check Valve prevent back flow in the line, and is self operating, according to increases or decreases in line pressures. The disc raises up off of the seat as pressure below the disc increases, while a drop in pressure on the inlet side and a build up of pressure on the outlet side causes the valve to close. Back pressure in the line holds the disc in the closed position.
Lift check valve are generally installed in a horizontal flow, but may be installed in vertical lines with the assistance of a spring behind the disc. The lift check valve in its closed position offers a more effective shutoff and tighter seal than the Swing Check.
lift check valve is manufactured in full port having end connections as threaded, socket-weld, flanged or weld end body types. Pressure classes include 150 through 600. We offer Lift Check valves in the following materials: CF8M, CF3M, CF8, CF3, CK20, CG8M, CF8C, CN7M, CW12MW, CY40, CW6MC, N12MV, N7M, M35-1, CZ100, CD3MN and many others.
Design & Testing International Standard of Lift Check Valve
|Design Standard||:||BS 1868 / ASME B 16.34 / DIN Std. / API 6D|
|Inspection & Testing Standard||:||BS EN ISO 12266 – I (BS 6755 – I) / API 598 / ISO 5208|
|Flange To Flange Distance||:||As Per ANSI B 16.10 / API 6D|
|End Connection||:||Flanged End to ANSI B 16.5, Class 150 / 300 / 600|
|:||BS 10 Table D / E / F / H|
|:||PN 6 / PN 10 / PN 16 / PN 25 / PN 40 / PN 64|
|:||DIN Standard / JIS Standard / IS Standard|
|:||Butt Weld End to ANSI B 16.25|
|Manufacuring Size Range||:||1/2″ (DN15) to 24″(DN 600)|
|Pressure Rating of Valve||:||150# / 300# / 600#|
|:||PN 10 / PN 16 / PN 25 / PN 40 / PN 64 / PN 100|
MOC (Bill of Material – BOM)
|Body, Cover & Plug||:||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||:||S.S. 410 (13% Cr. Steel)|
|:||ASTM A 105 + 13% Cr. Face|
|:||S.S. 410 (13% Cr. Steel) + Stellited F6 Hard Face|
|:||Alloy 20 / Hast Alloy|
|:||Duplex Steel / Super Duplex Steel|
|Gasket||:||SS 304/316 Spiral Wound with CAF/Graphite Filled|
|:||Graphited Asbestos wire based|
|:||CAF – Compressed Asbestos Fibre|
|:||Graphite Tensed Gasket|
|:||PTFE / 25% GFT|
|Bolts / Stud & Nuts||:||ASTM A 193 GR. B7 / A 194 GR. 2H|
Body & Cover made from high quality casting with liberal sections.
The castings are precision machined for high performance of valve.
Bolted Cover design
Body Seat Ring & Disc machined to close Tolerances providing smooth action and accurate seating.
Seat Ring sealweld to the body
Replaceable (Renewable) type Seat Ring & Integral Seat can also available on special request.
Stellited Hard Face F6 Seat Ring & Disc also supply on requirement.
All the disc have double lock nut or cotter pin fixed
In built wear life for long duration of service.