Pressure Seal Gate Valve
Pressure Seal Gate Valves are specifically designed for high-pressure and high-temperature applications, commonly found in the power generation, oil and gas, and chemical industries. These valves are ideal for applications where frequent maintenance and operational reliability are crucial. The pressure seal bonnet design provides enhanced sealing performance as the internal pressure increases, making it a reliable solution for systems that operate under extreme conditions.
| Pressure Class |
1500 ,2500 ,900 |
|---|
Unlike conventional bolted bonnet gate valves, pressure seal gate valves feature a unique seal mechanism where the bonnet seals tighter as the internal pressure increases, ensuring zero leakage and improved operational safety. These valves are used in applications that require full open or full close operations and are not recommended for throttling purposes.
Pressure Seal Gate Valves are a superior choice for industries that demand high integrity, reliability, and long-term service in critical high-pressure and high-temperature applications. Their design ensures that as the internal pressure increases, the bonnet seals even tighter, providing added security in extreme conditions.
Specification | Details |
|---|---|
Body Material | Forged or cast carbon steel (e.g., ASTM A105, ASTM A216 WCB), |
Stem Type | Rising stem with outside screw and yoke (OS&Y), offering a clear indication of valve position. |
End Connection | Flanged ends conforming to ASME B16.5, or butt weld ends to ASME B16.25. |
Face-to-Face Dimensions | Conforming to ASME B16.10. |
Pressure Rating |
|
Temperature Range | Suitable for high-temperature service, ranging from -29°C (-20°F) to 593°C (1100°F), depending on material. |
Testing Standards | Hydrostatic and pneumatic testing as per API 598. |
- Bonnet Design: Pressure seal bonnet with self-sealing feature under higher pressures, offering better leak-tightness.
- Material: Typically available in carbon steel, stainless steel, and alloy steel.
- Pressure Rating: Available in Class 900, Class 1500, and Class 2500.
- Size Range: Typically 2" to 24" (can vary depending on manufacturer).
- Ends: Available with butt weld, socket weld, or flanged ends.
- Disc Type: Flexible or solid wedge.
- Seat: Integral or renewable seat ring with metal seating surfaces for improved durability in high-pressure environments.
- Operation: Manual handwheel, gear operated, or actuator (pneumatic or electric) for automated operation.
- Leakage Class: ANSI Class IV or V as per API 598 standards.
