Pressure Seal Gate Valve
Main Features:
The pressure seal valves are designed 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.
This kind of gate valve is not only characterized as simple structure and reliable usage, but also able to create slight flexible deformation to compensate the deviation of the sealing face angle generated during processing, thus improving the process performance. In addition, at seat and gate disc seal surface are over-lay with iron-base alloy or Co-base alloy or carbide alloy for long duration.
Main Parameter Specification
Design and Manufacture:Cast Steel Gate Valve to API 600(ISO 10434),API 6D;Cast Stainless Steel Gate Valve to API 603,API 600
Inspection and Test:API598,API600 or API 6D
End Flange Dimension:ASME B16.5(for NPS≤24,ASME B 16.47 series B,API 605,ASME B16.47 A Series,MSS SP-44(for NPS>24)
BW end Dimension:ASME B16.25
Face to Face and End to End:ASME B16.10
Pressure-temperature ratings:ASME B16.34
Product Range
Body material: carbon steel, stainless steel, alloy steel
Nominal diameter:2"~36"(DN50~DN900)
End Connection: RF,RTJ, BW
Pressure range: Class150~2500(PN16~PN420)
Working temperature:-29ºC~+560ºC
Operation: Hand wheel,Gear,Electric Actuator,etc.
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| Specifications |
| Applicable Standards |
|
| Design |
ASME B16.34, API6D |
| Fire safe |
API 607 |
| Anti static |
API 608, API6D |
| Face to face |
ASME B16.10, API6D |
| Welding ends |
ASME B16.25 |
| Inspection and test |
API 598, API 6D |
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