The body is typically manufactured from cast or forged steel, stainless steel, or specialty alloys to suit different media, including water, steam, oil, or corrosive chemicals. The valve operates using a wedge-shaped or parallel gate that moves perpendicular to the flow, offering full-bore passage with minimal flow restriction or turbulence when the valve is completely open.
Gate valves feature a rising or non-rising stem, and the stem can be operated manually (with a handwheel), electrically, or pneumatically, depending on the application. They are preferred for applications that require full shut-off rather than flow regulation.
Technical Details
Standard Compliance: Designed and tested as per API 600, ASME B16.10 (face-to-face), ASME B16.5 (flanged end), and API 598 (inspection and testing).
Pressure Classes: Commonly available from Class 150 to Class 2500 with temperature ranges of -29°C up to 425°C, suitable for industrial environments.
Body Material: Options include ASTM A216 WCB (carbon steel), stainless steel grades 304/316, as well as special alloys for higher corrosion resistance.
Trim Materials: Seats, discs (wedges), stems, and other internal parts are typically made of 13% Cr stainless steel, 304/316 stainless, or hardfaced/stellite alloys for superior durability and tight shut-off.
Sealing: Offers both metal-seated and soft-seated configurations for different service conditions.
Operating Medium: Handles oil, gas, water, steam, and a range of corrosive chemicals.
Connection End: Available with flange, butt weld, socket weld, and threaded ends for compatibility with various piping systems.
Description provided by gvscontrol valve and strainers pvt ltd.
