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Cracking Pressure - Differential Pressure at which valve opens and flow occurs.

0.00 PSI - is a special design check valve for use on the inlet side of the PMPT & PMPNT Pumps used for increasing fill rate of pump.

Cracking Pressure
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Stainless Steel Check Valves

WSSCV Check Valve

The Model WSSCV is an all stainless steel in-line check valve for steam, gas, or liquid service. It provides tight shut-off, minimizes water hammer and also stops recycling of pumps by preventing back flow of liquid. Used in the petrochemical, pulp & paper, textile and food & beverage industries. The WSSCV all stainless steel check valves will operate much longer and are less problematic than bronze or cast iron check valves.

Features & Options

  • 316 Stainless Steel Body and Internal
  • Low cracking pressure on spring (1/4 PSI) to minimize resistance and maximize flow
  • Available with optional 5 PSI cracking pressure (must specify at time of order)
  • Available with NPT, SW, or optional Flanged connections
  • Spring made from Inconel-X-750 to handle extreme temperature as well as corrosive applications
  • Body is seam-welded to eliminate O-rings or gasket seals which can be affected by high temperature steam or hot condensate
  • Spring assisted closing of check valve to minimize noise and wear

Sample Specification

Check valve shall have a 316 stainless steel body and disc. Spring shall be made from Inconel-X-750. Check valve body to be seam welded together to eliminate need for O-ring or gasket.

* Differential Pressure at which valve opens and flow occurs.

† WSSCVQF is a special design check valve for use on the inlet side of the PMPT & PMPNT Pumps. It is center-guided and contains no spring. Used for  increasing fill rate of pump.

WSSCV Stainless Steel

The Model  WSSCV  is an all stainless steel in-line check valve for steam, gas, or liquid service. It  provides tight shut-off, minimizes water hammer and also stops recycling of pumps by preventing back flow of liquid. Used in the petrochemical, pulp & paper, textile and food & beverage industries. The WSSCV all  stainless steel check  valves will operate much longer and are less problematic than bronze or cast iron check valves.

ModelSizeTypeCracking Pressure (psi)Weight (lbs)
WSSCV-12-N-01/2"NPT0.251.0
WSSCV-12-N-51/2"NPT5.01.0
WSSCV-12-SW-01/2"Socket Weld0.251.0
WSSCV-12-SW-51/2"Socket Weld5.01.0
WSSCV-13-N-03/4"NPT0.251.5
WSSCV-13-N-53/4"NPT5.01.5
WSSCV-13-SW-03/4"Socket Weld0.251.5
WSSCV-13-SW-53/4"Socket Weld5.01.5
WSSCV-14-N-01"NPT0.252.3
WSSCV-14-N-51"NPT5.02.3
WSSCV-14-SW-01"Socket Weld0.252.3
WSSCV-14-SW-51"Socket Weld5.02.3
WSSCV-15-N-01 1/4"NPT0.253.5
WSSCV-15-N-51 1/4"NPT5.03.5
WSSCV-15-SW-01 1/4"Socket Weld0.253.5
WSSCV-15-SW-51 1/4"Socket Weld5.03.5
WSSCV-16-N-01 1/2"NPT0.255.3
WSSCV-16-N-51 1/2"NPT5.05.3
WSSCV-16-SW-01 1/2"Socket Weld0.255.3
WSSCV-16-SW-51 1/2"Socket Weld5.05.3
WSSCVQF-16-N-01 1/2"NPT0.005.3
WSSCV-17-N-02"NPT0.258.5
WSSCV-17-N-52"NPT5.08.5
WSSCV-17-SW-02"Socket Weld0.258.5
WSSCV-17-SW-52"Socket Weld5.08.5
WSSCV-19-N-03"NPT0.2521
WSSCV-19-N-53"NPT5.021
WSSCV-19-SW-03"Socket Weld0.2521
WSSCV-19-SW-53"Socket Weld5.021
Downloads
Catalog Spec Sheet (pdf)
I&M (pdf)
Product Overview
The Model WSSCV is an all stainless steel in-line check valve for steam, gas, or liquid service. It provides tight shut-off, minimizes water hammer and also stops recycling of pumps by preventing back flow of liquid. Used in the petrochemical, pulp & paper, textile and food & beverage industries. The WSSCV all stainless steel check valves will operate much longer and are less problematic than bronze or cast iron check valves.
Features
• 316 Stainless Steel Body and Internals
• Low cracking pressure on spring (1/4 PSI) to minimize resistance and maximize flow.
• Available with optional 5 PSI cracking pressure (must specify at time of order)
• Available with NPT, SW, or optional Flanged connections
• Spring made from Inconel-X-750 to handle extreme temperature as well as corrosive applications
• Body is seam-welded to eliminate O-rings or gasket seals which can be affected by high temperature steam or hot condensate
• Spring assisted closing of check valve to minimize noise and wear
Selection / Sizing / Capacities

Please select model base on Cracking Pressure (PSI) in below tables

1. NPT connection type.
   
* Differential Pressure at which valve opens and flow occurs.
† WSSCVQF is a special design check valve for use on the inlet side of the PMPT & PMPNT Pumps. It is center-guided and contains no spring . Used for increasing fill rate of pump.

 2. Socket Weld (SW) connection type.
  
* Differential Pressure at which valve opens and flow occurs.

Dimensions and Weight

Sample Specification
Check valve shall have a 316 stainless steel body and disc. Spring shall be made from Inconel-X-750. Check valve body to be seam welded together to eliminate need for O-ring or gasket.