SALIENT FEATURES :
Non Return Valve Body & Cover are made from high quality casting with liberal sections. The castings are precision machined for high performance.
Body Seat Ring & Disc machined to close Tolerances providing smooth action and accurate seating.
Seat Ring Screwed in to the body are replaceable type. Seal welded type Seat Ring & Integral Seat cab also be offered on special request.
Stellited Seat Ring & Disc also be offered on special request.
In built wear life for long duration in service.
The Seat-rings are cylindrical bottom seated type having ample cross section for strength are provided with welded in and threaded Seat-rings will be supplied on request. In case of SS valves the Seat-rings are integral to Body.
The Body to Bonnet joint is a male & female in ASME 150#, 300# & 600# valves and ring joint is used in higher classes.
Check Valves meet the requirements of fugitive emission levels Shell category B as per MESC SPE 77/312
TECHICAL SPECIFICATIONS :
1) Manufacturing Standard : BS 1873 / BS 1868
2) Testing and Inspection Standard : API 598 / BS 5146 / BS 5148
3) Face to Face : ANSI B 16.10 / DIN ND 16 / DIN ND 40
4) End Connections :
a. Flanged as per ANSI B 16.5 RF
b. DIN 2533 / 2543 / 2535 / 2545 / BS 1560
Primary Service Rating & Test Pressure
Hydro Test Pressure
AIR TEST – SEAT – 102 PSIG / 7.03 BAR
Swing Check valves also can be supplied with Titling disc design, Dash pot arrangement and outside lever & weight design for use where control of the disc is desires.