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Pressure Sealing Globe Valve

     The pressure seal globe valves are designed in accordance with BS1873 and ASME B16.34 for service of high temperature and high pressure and are widely used in fossil fuel power plant. Compared with bolted bonnet joint valves, it provides absolute reliable sealing of the bonnet joint, so that the pressure seal valves are more compact and rigid as well as maintenance cost-effective at high temperature and high pressure service.
    The two openings for medium flowing in and out are in the same direction, forming an angle of 180°. In addition, at seat and disc seal surface are over-lay with iron-base alloy or Co-base alloy or carbide alloy for long duration. For large size valves will be designed with main disc and vice disc type, and medium flow from up disc to down disc, that the operation torque will be greatly decreased and the seat tightness performance are more reliable.

VALVE DESIGN DATA

Size: 1/2"-8"
End connection: RF, RTJ, BW
Working temperature: -29℃～560℃
Operation: handwheel, gear box, electric, etc

Nominal pres sure:  Class 800Lb-2500Lb PN6.4-32.0MPa
Material: A216 WCB, WC6, WC9, C5, C12, C12A,
Design & Manufacture Std.:  BS1873, ASME B16.34, GB/T 12235, JB/T3595
Face to Face Std.: ANSI B16.34 、BS1873,ASME B16.34, GB/T 12235, JB/T3595
Flange、Thread End Connection Std.: ASME B16.5、 ANSI B1.20.1
API 608 is intended to provide the similar additional requirements for steel and alloy steel ball valves beyond
ASME B16.34 as do the following API standards for other valve types:
API  594, Check Valves: Flanged, Lug, Wafer and Butt-welding
API Standard 599, Metal Plug Valves—Flanged, Threaded and Welding Ends
API Standard 600, Bolted Bonnet Steel Gate Valves for Petroleum and Natural Gas Industries
API Standard 602, Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller for the Petroleum and Natural Gas Industries
API 600: Bolted Bonnet Steel Gate Valve for Petroleum and Natural Gas Industries
BS 1414: Specification for Steel Wedge Gate Valves (Flanged and Butt-welding Ends) for the Petroleum, Petrochemical and Allied Industries
DIN3352: Bolted Bonnet Steel Gate Valve for Petroleum and Natural Gas Industries
ASME B16.47 Series A Large Diameter Steel Flanges: NPS 26 Through NPS 60 Metric/Inch Standard
MSS SP-25 Standard Marking System for Valves, Fittings, Flanges and Unions
ASME B16.20, Metallic Gaskets for Pipe Flanges—Ring-joint, Spiral-wound and Jacketed
ASME B16.25, Butt Welding Ends
ASME B31.3 Process Piping
API 6FA  Fire Testing of Valves
API Std 598  Valve Inspection and Testing

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