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ball valve

API Swing Check Valve

api swing check valveDesign acc.to API6D,API594, BS1868
Face-to-Face acc. to ASME B16.10
Flange acc. to ASME B16.5
Butt Weld acc. to ASME B16.25
Test acc. to API 598
Fire Proof acc. to API607
Anti-H2S acc. to NACE MR-0175
Size from 2” to 36”
Pressure from 150LB to 2500LB

With Swing Type and Lifting Type
Bolted cover, swing type disc
Threaded or welded seat ring
ASTM A216 WCB, A217 WC6, A351CF8, A351CF8M,
A351 CF3, A351 CF3M, A351 CN7M

Materials list
NO. Part name Material
12 Disc nut Carbon steel/stainless steel
11 Washer Carbon steel/stainless steel
10 Hinge pin Carbon steel/stainless steel
09 Seat ring CS+SS/SS/SS+STL(see body materials)
08 Disc CS+SS/SS/SS+STL(see body materials)

NO. Part name WCB LCB WC6 WC9
07 Bolt stud&nut A193 Gr B7/A194 Gr 2H A320 Gr L7/A194 Gr 4 A193 Gr B16/A194 Gr 4/7 A193 Gr B16/A194 Gr 4/7
06 Cover bolt&nut A193 Gr B7/A194 Gr 2H A320 Gr L7/A194 Gr 4 A193 Gr B16/A194 Gr 4/7 A193 Gr B16/A194 Gr 4/7
05 Gasket Spiral wound/soft iron Spiral wound/soft iron spiral wound/SS304 spiral wound/SS304
04 Hinge yoke A216 Gr WCB A352 Gr LCB A217 Gr WC6 A217 Gr WC9
03 Hinge A216 Gr WCB A352 Gr LCB A217 Gr WC6 A217 Gr WC9
02 Cover A216 Gr WCB A352 Gr LCB A217 Gr WC6 A217 Gr WC9
01 Body A216 Gr WCB A352 Gr LCB A217 Gr WC6 A217 Gr WC9

NO. Part name C5 C12 CF8 CF8M
07 Bracket stud&nut A193 Gr B16/A194 Gr 4 A193 Gr B16/A194 Gr 4/7 A193 Gr B8/A194 Gr 8 A193 Gr B8M/A194 Gr 8M
06 Cover bolt&nut A193 Gr B16/A194 Gr 4 A193 Gr B17/A194 Gr 4/7 A193 Gr B8/A194 Gr 8 A193 Gr B8M/A194 Gr 8M
05 Gasket Spiral wound/soft iron Spiral wound/SS304 spiral wound/SS304 spiral wound/SS316
04 Hinge yoke A217 Gr C5 A217 Gr C12 A351 Gr CF8 A351 Gr CF8M
03 Hinge A217 Gr C5 A217 Gr C12 A351 Gr CF8 A351 Gr CF8M
02 Cover A217 Gr C5 A217 Gr C12 A351 Gr CF8 A351 Gr CF8M
01 Body A217 Gr C5 A217 Gr C12 A351 Gr CF8 A351 Gr CF8M

Higher sizes are with dashpot arrangement to control the movement of the disc order to avoid slamming and water hammer.