Design Basis
WCB Metal Seated Flanged Knife Gate Valve Class 150 is built around Metal Seated Knife Gate Valve. The buyer should confirm pressure direction, gate guidance, body style, packing exposure, seat access and whether the construction suits solids-bearing service.
Pressure-Boundary Material
WCB provides a cast carbon-steel pressure boundary for general industrial service; corrosion allowance, coating, temperature and trim should be aligned with the process. Class 150 flanged service requires the valve pressure boundary, flange standard, face-to-face and actual allowable differential pressure to be checked together rather than assumed from the class designation. Metal seating favors abrasion and temperature capability, with leakage acceptance, gate finish, seat hardfacing and operating thrust becoming the key trade-offs.
Pressure Class and Piping Interface
For WCB Metal Seated Flanged Knife Gate Valve Class 150, Class 150 is a nominal rating and the interface is Flanged. Maximum differential pressure must be confirmed by size, pressure direction, seat arrangement, packing and actuator thrust instead of assumed from rating alone.
Seat and Seal Arrangement
WCB Metal Seated Flanged Knife Gate Valve Class 150 uses Metal Seat. Confirm shutoff expectation, elastomer or metal-seat compatibility, abrasion, temperature, replaceability and solids clearing behavior before quotation.
Operation and Actuation
Manual operation should keep handwheel or gear effort practical at the maximum specified differential pressure and expected packing/gate friction.
Service Conditions
WCB Metal Seated Flanged Knife Gate Valve Class 150 is mapped for Higher-temperature / abrasive process. Confirm actual media, solids concentration or fiber content, pressure cases, temperature range and cycling duty before release.
Inspection and Testing
For WCB Metal Seated Flanged Knife Gate Valve Class 150, align MTC/heat traceability, dimensional inspection, pressure/leakage testing, coating or surface checks, actuator functional testing and witness points with the approved datasheet and ITP.
Documents Before Release
Manufacturing release for WCB Metal Seated Flanged Knife Gate Valve Class 150 should reference the approved GA, face-to-face/interface details, material schedule, seat/packing definition, operator or actuator data and final inspection-document index.