125WCSI Series - PRODUCT DATA BULLETIN
 125WCSI Series - INSTALLATION, OPERATION AND MAINTENANCE MANUAL

Series '125WCSI'

Available in sizes 2" to 24" with a body designed to fit between ANSI 125# and 250# flanges for maximum operating pressures as follows:

PMO: (Maximum Operating Pressure)
2" to 6" 400 psi @ 150 deg. F
250 psi @ 400 deg. F.
8" to 12" 200 psi @ 150 deg. F.
150 psi @ 400 deg. F.

Materials of Construction:

  • Body: Cast Iron
  • Plug: Bronze or 316 Stainless Steel
  • Seat: Bronze or 316 Stainless Steel (Optional soft seat available upon request)
  • Spring: 316 Stainless Steel
Notes:
  • These valves are designed for horizontal and vertical flows.
  • The conical spring design allows the plug greater travel, resulting in better flow characteristics than valves of conventional design.
  • These valves can be machined to accept an optional soft seat (usually Buna-N) for bubble tight shut-off.
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Unit of Measure
Items
Cast Iron Silent Wafer Check Valve

Cast Iron Silent Wafer Check Valve
Cast Iron Silent Wafer Check Valve

Cast Iron Silent Wafer Check Valve
Cast Iron Silent Wafer Check Valve

Cast Iron Silent Wafer Check Valve
Cast Iron Silent Wafer Check Valve

Cast Iron Silent Wafer Check Valve
Cast Iron Silent Wafer Check Valve

Cast Iron Silent Wafer Check Valve
Size N/A 50 mm2 in N/A 65 mm2 1/2 in N/A 80 mm3 in N/A 100 mm4 in N/A 125 mm5 in
A N/A 67 mm2 5/8 in N/A 73 mm2 7/8 in N/A 80 mm3 1/8 in N/A 102 mm4 in N/A 121 mm4 3/4 in
B N/A 108 mm4 1/4 in N/A 127 mm5 in N/A 146 mm5 3/4 in N/A 178 mm7 in N/A 213 mm8 3/8 in
C N/A 51 mm2 in N/A 70 mm2 3/4 in N/A 83 mm3 1/4 in N/A 102 mm4 in N/A 127 mm5 in
D N/A 60 mm2 3/8 in N/A 73 mm2 7/8 in N/A 89 mm3 1/2 in N/A 114 mm4 1/2 in N/A 140 mm5 1/2 in
Flow Coefficient Cv N/A 57 N/A 87 N/A 127 N/A 228 N/A 357
Weight N/A 2.3 kg5 lb N/A 3.6 kg8 lb N/A 4.5 kg10 lb N/A 7.7 kg17 lb N/A 12.3 kg27 lb
Maximum Operating Pressure PMO1 N/A 250 psi at 400 ºF 400 psi at 150 ºF
ANSI Class N/A 125 – 125/250 ANSI
End Connection N/A Wafer type
Valve Type N/A Silent Check
Seat Material  N/A Metal-Bronze
Body Material (1) N/A A126-B Cast Iron
Plug Material (2) N/A B148 C954 Aluminum Bronze or 316 Stainless Steel
Seat Material (3)2 N/A B148 C954 Aluminum Bronze or 316 Stainless Steel
Spring Material (4) N/A 316 Stainless Steel
Bushing Material (5) N/A B148 C954 Aluminum Bronze
Set Screw Material (6) N/A 300 Series Stainless Steel
  • 1 Recommended for liquid service only.
  • 2 Resilient seat materials are available. Please consult factory.