Specifications
Hemiwedge® Cartridge valves are available in a variety of sizes, pressure classes, materials, and trims. The basic design is easily scalable. Additional sizes, pressures classes and features are continually under development to meet industry needs.
MATERIALS: Carbon steel (A216 GradeWCC), impact-tested carbon steel (A352 Grade LCC), stainless steel (A351 Grade CF8M) are the most typical alloys offered, but other alloys are available for body/bonnet or internals depending on service conditions. Trim materials are available in a variety of alloys to meet NACE requirements and other corrosive environments.
SEATS/SEALS: The selection of seat/seal material is dependent on the service fluid and temperature, and includes various common elastomers such as Viton® and HSN, or synthetic materials such as Teflon®, Tefzel®, PEEK, or Metal-to-Metal seating for higher temperature or severe services. We also have a DOUBLE BLOCK AND BLEED option that provides the ability to positively load (irrespective of pressures) both the upstream seat and downstream seat and positively prove the sealing capability of the valve in either full (thru-conduit / pigable) or reduced ports.