power station globe valve Description
The power station globe valve is a valve device used in various piping systems of thermal power plants to cut off or connect pipeline media. It is suitable for non-corrosive media such as water and steam and is designed and manufactured in compliance with standards such as ASME B16.34. With a working pressure of up to 32.0 MPa and a maximum applicable medium temperature of 570°C, the valve body is made of high-temperature steel materials, including WCB, WC6, and WC9.
The valve features a pressure self-sealing structure, where higher pressure ensures more reliable sealing, and sealing performance improves with increasing medium pressure. The valve seat and disc sealing surfaces are plasma-sprayed with cobalt-based hard alloy, while the valve stem undergoes anti-corrosion nitriding treatment. Key components include reinforced flexible graphite packing and anti-scratch guide bushings, with welded connection options to meet the demands of different high-temperature and high-pressure piping systems.
Products Specification
Design Specification
Design Standards: ASME B16.34, DL/T 531, JB/T 3595
Structure Length: ASME B16.10, DL/T 531
Connection Standard: GB/T 12224, ASME B16.25, DL/T 531
Pressure Test: API 598, GB/T 13927, GB/T 26480, JB/T 9092
Pressure & Temperature Rating: ASME B16.34, GB/T 12224
Performance Parameters
Body Material: Carbon steel, stainless steel, alloy steel
Nominal Diameter: NPS 1/2″ – NPS 8″ / DN50 – DN200
Pressure Range: CL900 – CL2500 / PN150 – PN420
Operating Temperature: –46°C ~ +600°C
Scope of Application: Suitable for cutting off, connecting, or regulating the flow of water, steam, oil, and superheated steam in high-temperature and high-pressure pipelines in thermal power plants, petrochemical plants, and metallurgy
Structural Features:
Frictionless Opening/Closing
This feature completely resolves the issue of traditional valves where mutual friction between sealing surfaces affects sealing performance.
Top-Entry Design
Valves installed in pipelines can be inspected and maintained online, effectively reducing plant downtime and operational costs.
Single-Seat Design
Eliminates the risk of abnormal pressure buildup in the valve chamber, ensuring operational safety.
Low-Torque Design
A specially designed valve stem allows easy operation with a small handwheel, reducing manual effort.
Wedge Seal Mechanism
The valve uses mechanical force from the stem to wedge the ball against the seat, ensuring consistent sealing performance regardless of pipeline pressure differentials.
Self-Cleaning Seal Structure
When the ball tilts away from the seat, fluid flows uniformly across the sealing surface at 360°, preventing localized erosion of the seat and flushing away accumulated debris, achieving self-cleaning.
power station globe valve for sale
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