Swing Check Valves
Cast Stainless Steel Bolted Cover

■ Basic design : ASME B16.34, API 594, Intergral seat type
■ Flange drilling : ANSI B16.5 (2″~24″), ASME B16.47 Series.A (26″over)
■ Face to face : ANSI B16.10
■ Test : API 598

① BODY The body is in stainless steel, carefully designed to keep pressure drops to a minimum.
A wide opening on top of the body premits easy inspection and maintenance.
The basic dimension,i.e.wall thickness, face to face and flanges, comply with the relevant API and ANSI standards.
The body-to-cover flange is circular.
Threaded bosses are incorporated to ensure correct alignment of the hinge pin.
Bosses may be provided for drain taps or bypass piping.

② COVER The cover is in stainless steel.
The sealing surface for the connection to the body are recessed in the 150lb, 300lb and 600lb and ring joint in the higher.

③ DISC The disc is part of the trim.
The back side has a threaded stud for attachment to the hinge with a stainless steel nut and split pin to insure a strong connection.
The seating face is ground and lapped, for a perfectly tight seal.

⑨ ROD PIN The rod pin is part of the trim.
The rod pin is retained in the body by one threaded plugs and sealed by metallic or non-asbestos.
The pin can be easily removed for maintenance of the valve.

⑪, ⑫ COVER BOLT/NUT The cover studs and nuts are manufactured from alloy or stainless steel to the relevant ASTM standard.

※ If you do not see it all, drag the table to the left or right.

Data table
No Name of Part ASTM specification
Cast Stainless steel Cast Duplex steel Cast Alloy steel
1 BODY A351 CF8 A351 CF8M A351 CG8M A351 CF8C A995 CD3MN A995 CD4MCUN A995 CE3MN A995 CD3MWCUN A351 CN7M A494 CW6MC A494 M35-1 A494 CW12MW
2 BONNET A351 CF8 A351 CF8M A351 CG8M A351 CF8C A995 CD3MN A995 CD4MCUN A995 CE3MN A995 CD3MWCUN A351 CN7M A494 CW6MC A494 M35-1 A494 CW12MW
3 DISC A351 CF8 A351 CF8M A351 CG8M A351 CF8C A995 CD3MN A995 CD4MCUN A995 CE3MN A995 CD3MWCUN A351 CN7M A494 CW6MC A494 M35-1 A494 CW12MW
4 ARM A351 CF8 A351 CF8M A351 CG8M A351 CF8C A995 CD3MN A995 CD4MCUN A995 CE3MN A995 CD3MWCUN A351 CN7M A494 CW6MC A494 M35-1 A494 CW12MW
5 GASKET COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL
6 PLUG GASKET COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL
7 DISC WASHER A276 304 A276 316 A276 317L A276 347 A182 F51 A182 F61 A182 F53 A182 F55 ALLOY20 ALLOY 625 K400 C276
8 DISC NUT A276 304 A276 316 A276 317L A276 347 A182 F51 A182 F61 A182 F53 A182 F55 ALLOY20 ALLOY 625 K400 C276
9 ROD PIN A276 304 A276 316 A276 317L A276 347 A182 F51 A182 F61 A182 F53 A182 F55 ALLOY20 ALLOY 625 K400 C276
10 PLUG BOLT A276 304 A276 316 A276 317L A276 347 A182 F51 A182 F61 A182 F53 A182 F55 ALLOY20 ALLOY 625 K400 C276
11 COVER BOLT A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8
12 COVER NUT A194 8 A194 8 A194 8 A194 8 A194 8 A194 8 A194 8 A194 8 A194 8 A194 8 A194 8 A194 8
13 EYE BOLT A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8

※ Note. - Gasket material : customer’s requirements