Products breif:
1. Part-Turn Operation: Significantly reduces wear and friction on the stem seal, preventing external leaks.
2. Erosion-Resistant Ball Design: Provides a larger flow area for a given stroke in the initial opening phase, allowing for a faster reduction in...
  •    Description   

    1. 1/4 Turn Operation: Significantly reduces wear and friction on the stem seal, preventing external leaks.

    2. Erosion-Resistant Ball Design: Provides a larger flow area for a given stroke in the initial opening phase. This allows for a faster reduction in pressure differential and shortens the exposure time to high differential pressure, effectively increasing the service life.

    3. Graphite Stem Sealing and Disc Spring Pre-loading: The graphite stem packing, combined with seat pre-loading using disc springs, prevents seizing under high-temperature conditions.

    4. Handling Special Conditions: Under specific operating conditions (e.g., in main steam line drain valves, which also function as steam vent valves during pipeline warm-up), high flow velocity and significant impact load cause high-frequency oscillation of the ball within the valve cavity. This impacts the stem, leading to a sharp increase in operating torque and potential stem breakage or deformation, rendering the valve inoperable. The application of throttle washers (orifices) helps dissipate energy during the initial valve opening, minimizing erosion and cavitation to the greatest extent.

    5. Monoblock Construction: Provides a more compact design.

     

       Parameters   

    • Product Standards: GB/T 12224, ASME B16.34
    • Pressure Rating: PN100-PN760 (600LB-4500LB)
    • Nominal Diameter: DN15-DN100 (1/2" - 4")
    • Body Material: A105, F316L, F22, F91, F92, 15CrMo, 12Cr1MoV
    • Operating Temperature: -29°C ~ 650°C
    • Working Media: Water, Steam
    • Connection Type: Flanged, Welded
    • Actuation Type: Handwheel, Worm Gear, Pneumatic, Electric

Related popular products

High Pressure Drain Water Ball Valve

HQ-CNV-Home    Power Plant Valve    High Pressure Drain Water Ball Valve

PRODUCTS