Flowjet Valves : Industrial Valves Manufacutrer

WAFER CHECK VALVE

A check valve or non-return valve which normally allows to flow through it in only one direction.

Check valves are two-port valves, means they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Although they are available in a wide range of sizes and costs, Check valves work automatically and most are not controlled An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate.

A swing check valve or tilting disc check valve is check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow.

A lift-check valve is a check valve in which the disc, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly. When the pressure is no longer higher, gravity or higher downstream pressure will cause the disc to lower onto its seat, shutting the valve to stop reverse flow.

MANUFACTURING STANDARDS
Design Api 6d / Api 594 / Asme b 16.34
Face to face Api 6d / Api 594
Testing Api 6d / aAi 598
Material ASTM specifications
Trims Soft seat for tight shut-off.
Optional ASTM Specifications
Trims Varieties of combinations.
Lesser weight, smaller size and lesser force to open.
Optional Replacement of conventional check valves without pipeline modification.
KEY FEATURES
  • The product designs are in accordance to ANSI B16.34 / BS1868 / IBR with reliable sealing & sturdy construction to ensure excellent performance.
  • Suitable for the horizontal & vertical pipe runs.
  • “NON-SLAM” arrangement i.e. Dash Pot arrangement can be provided.
  • Pressure sealed bonnet for ANSI#900 and above to provide excellent sealing against increased line pressure.
  • Full range of Body / Cover / Bonnet & Trim material.
  • Valves are available in both Flange End & Butt Weld ends.
MATERIAL
S.NO. Description Wcb C5 Lcb Cf8m
1 Body A 216 gr. Wcb A 217 gr. C5 A 352 gr. Lcb A 351 gr. Cf8m
2 Seat ring Wcb + 13% cr. Seel Wcb + 13% cr. Seel A 352 gr. Lcb+ss304 A 351 gr. Cf8m
3 Soft seated ring Epdm / nitrile vition / neoprene Epdm / nitrile vition / neoprene Epdm / nitrile vition / neoprene Epdm / nitrile vition / neoprene
4 Disc A 217 gr. Ca15 A 217 gr. Ca15 A 352gr. Lcb+ss304 A 351 gr. Cf8m
5 Spring Ss304 / inconel Ss304 / inconel Ss304 / inconel Ss316 / inconel
6 Hinge A 216 gr. Wcb/ a 217 gr. Ca15 A 217 gr. C5/ a 217 gr. Ca15 A 351 gr. Cf8/ a 352 gr. Lcb A 351 gr. Cf8m
7 Flange seal Epdm / nitrile vition / neoprene Epdm / nitrile vition / neoprene Epdm / nitrile vition / neoprene Epdm / nitrile vition / neoprene
8 Stem shaft / hinge pin A 276 tp 410 A 276 tp 410 A 276 tp 304 A 276 tp 316