Pressure Seal Lift Check Valves

 

Materials of Construction


Pressure Seal Lift Valves - Materials of Construction
NO PART NAME CARBON STEEL 1¼ CHROME 2¼ CHROME 9Cr-1Mo-V 316 STAINLESS
98 BONNET STUDS ASTM 193 GR B7 ASTM 193 GR B7 ASTM 193 GR B7 ASTM 193 GR B7 ASTM 193 GR B7
16b STUD NUTS ASTM A194 GR 2H ASTM A194 GR 2H ASTM A194 GR 2H ASTM A194 GR 2H ASTM A194 GR 2H
43 BONNET CARRIER CARBON STEEL CARBON STEEL CARBON STEEL CARBON STEEL CARBON STEEL
124 SEGMENT RING AISI 4340 OR 4140 AISI 4340 OR 4140 AISI 4340 OR 4140 AISI 4340 OR 4140 AISI 4340 OR 4140
73 THRUST RING3
(Not Illustrated)
AISI 4340 OR 4140 AISI 4340 OR 4140 AISI 4340 OR 4140 AISI 4340 OR 4140 AISI 4340 OR 4140
55 GASKET MILD STEEL SILVER PLATED5 MILD STEEL SILVER PLATED5 MILD STEEL SILVER PLATED5 MILD STEEL SILVER PLATED5 MILD STEEL SILVER PLATED5
30 BONNET CAP CARBON STEEL ASTM A182 GR F22 ASTM A182 GR F22 ASTM A182 GR F91 ASTM A182 GR F316
71 DISC CARBON STEEL W/CO-CR OVERLAY 316 SS OR 2¼ CR W/CO-CR OVERLAY 316 SS OR 2¼ CR W/CO-CR OVERLAY 316 SS W/CO-CR OVERLAY 316L W/CO-CR OVERLAY
10 BODY1 ASTM A216 GR WCB or WCC2 ASTM A217 GR WC6 ASTM A217 GR WC9 ASTM A217 GR C12A ASTM A351 GR CF8M
11 SEAT RING CARBON STEEL W/CO-CR OVERLAY 316 SS OR 21⁄4 CR W/CO-CR OVERLAY 316 SS OR 21⁄4 CR W/CO-CR OVERLAY ALLOY 91 W/CO-CR OVERLAY 316L SS W/CO-CR OVERLAY

CNI reserves the right to change or modify product design or construction without prior notice and without incurring any obligation to make such changes and modifications on products previously or subsequently sold.


NOTES:

  1. A 309 SS inlay is furnished as a standard in the gasket area of the body on ASME class 2500 valves. For this option on other pressure classes, specify special features suffix H.
  2. WCC valve bonnet and internals will be manufactured with 300 series stainless or 2¼ CR material.
  3. Thrust ring comes standard on 12” and larger ASME class 1500 and all sizes of ASME class 2500.
  4. The table lists typical materials of construction. Actual materials will meet customer requirements
  5. Stainless steel capped graphitic gaskets are available

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