PSC Swing Check Valves
Cast Stainless Steel Pressure Seal Cover

■ Basic design : ASME B16.34, API 594, Intergral / Renewable seat type
■ Flange drilling : ANSI B16.5
■ Face to face : ANSI B16.10
■ Test : API 598

① BODY The body of the high pressure swing check valve is designed as an one piece casting, with smooth inside contour providing maximum flow efficiency.
The pressure seal type swing check valve is designed with 4 holes in the neck at the region of the segment ring for a proper disassembly.
The contacting surface the pressure seal gasket outside has a stainless steel 18-8 inlay to assure soundness and corrosion resistance for carbon and alloy steel valves.
The body is seal welding for body seatring.

② SEAT RING The seat ring are made of the same material as the body, and the surface have stellite no.6 hardfacing.
The seat is welded into the valve body preventing leakage between seat and body.
Special attention is given to the seating surface which are ground lapped to ensure a perfectly tight seal.

③ DISC The disc contacting surface with deposit stellite no.6 hard facing is ensured by pressure tightness and freedom from sticking.
It is connected to the arm by means of a disc nut.
Special attention is given to the seating face which are ground and lapped to ensure a perfectly tight seal.

⑧ CAP The bonnet is designed and manufactured in order to ensure a perfect seal, as well as to allow for easy dismounting and reassembly.

⑱ ROD PIN The rod pin is part of trim. The rod pin is retained in the body a thread plug and sealed by metallic gasket.
The rod pin can be easily removed for maintenance of the valve.

※ 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
1 BODY A351 CF8 A351 CF3 A351 CF8M A351 CF3M
2 SEAT RING A240 T304 A240 T304L A240 T316 A240 T316L
3 DISC A351 CF8 A351 CF3 A351 CF8M A351 CF3M
4 ARM A351 CF8 A351 CF3 A351 CF8M A351 CF3M
5 DISC WASHER A194 B8 A194 B8 A194 B8M A194 B8M
6 DISC NUT A194 B8 A194 B8 A194 B8M A194 B8M
7 DISC PIN A276 304 A276 304L A276 316 A276 316L
8 CAP A351 CF8 A351 CF3 A351 CF8M A351 CF3M
9 PRESSURE SEAL A240 304 / GRAPHITE + 304 A240 304L / GRAPHITE + 304L A240 316 / GRAPHITE + 316 A240 316L / GRAPHITE + 316L
10 SPACER RING A240 304 A240 304L A240 316 A240 316L
11 SEGMENT RING A240 304 A240 304L A240 316 A240 316L
12 CAP RETAINER A351 CF8 / A276 304 A351 CF8 / A276 304 A351 CF8 / A276 304 A351 CF8 / A276 304
13 CAP RETAINER BOLT A194 B8 A194 B8 A194 B8 A194 B8
14 CAP RETAINER NUT A194 8 A194 8 A194 8 A194 8
15 I-BOLT A194 B8 A194 B8 A194 B8 A194 B8
16 PLUG BOLT A276 304 A276 304L A276 316 A276 316L
17 GASKET GRAPHITE + 304 GRAPHITE + 304L GRAPHITE + 316 GRAPHITE + 316L
18 ROD PIN A276 304 A276 304L A276 316 A276 316L

※ Note. - Packing & gasket material ; customer's requirements