Structural Features:

The top - entry structure reduces the number of connecting bolts of the valve body itself under high - pressure and large - diameter conditions, enhances the reliability of the valve, and can overcome the impact of the system's self - weight on the normal operation of the valve. The valve stem and the ball are integrated, which can effectively transmit torque to the valve ball. A compensation and preloading spring and a slag - proof structure are arranged behind the valve seat to prevent the medium from entering the spring cavity and causing spring failure. The flow channel can be lined with a wear - resistant sleeve, which can effectively extend the service life of the valve body and the ball.

Main Technical Parameters

Adopted Standards: ANSI B16.34a, ANSI B16.5, API 598, MSS.SP

Nominal Diameter: DN1" - 20"

Pressure: 150Lb - 2500Lb

Sealing Form: Bidirectional double seal

Material

• Valve Body: WCB, 15CrMo, 304, 316
• Valve Seat: 304, 316 + NiB
• Ball: 304, 316, F51 + NiB, WCPacking and Sealing Elements: Graphite + 316, Graphite, Reinforced F4

Applicable Temperature: - 40℃ - 550℃

Applicable Medium: Various gases and liquids (black water, gray water)

Valve Driving Mode: Manual, Pneumatic, Electric

Minimum Valve Opening and Closing Time: < 3 seconds

Valve Trouble - free Operation Time: 5 - 8 years (more than 1 year for slag water system)

Note: This valve is suitable for the cut - off and emergency cut - off of pipelines for nitrogen, oxygen, natural gas and various gas mixtures, and can also be used in the slag water system of coal water slurry and pulverized coal gasification processes. The valve is required to have reliable performance and a long service life.