Bellow Sealed Globe Valves
Bellow Sealed Globe Valves
Bellow Sealed Globe Valves
Bellow Sealed Globe Valves
Bellow Sealed Globe Valves
You can buy good quality Bellow Sealed Globe Valves, we are the best distributor from China market.
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Bellow Sealed Globe Valves


Globe valve with bellows seal is applicable to the cutting and connection of pipelines medium that are used in various industries such as petroleum, chemical industry , pharmacy, chemical fertilizer, electric power industry etc under nominal pressure of Class 150-600LBS and working temperature of -29℃-350℃


Product Range

Size:1/2”-20”, DN15-DN500

Pressure: PN10-PN40, 150Lb-600Lb


Technical Specifications:

Design StandardBS1873API602, DIN3356

Design Standard for the bellowsMSS SP117.

Face to Face ASME B16.10, DIN3202

Flange Connection Standard ASME B16.5, DIN2543-2545

BW  StandardASME B16.25.

TemperatureASME B16.34.

Test and InspectionAPI598, DIN3230

 

Available Materials: Carbon Steel, Stainless Steel, Alloy Steel, Duplex Stainless Steel

1. Metal bellows seal the moving stem and increase durability of packed stem seal valves


2. Bellow provide a barrier between the stem at its point of entry through the pressure boundary and the process fluid within the valve, to eliminate stem leakage


3. An anti-rotation device is provided in the bonnet to ensure bellow does not get twisted during assembly and disassembly or by vibration


4. Bellow-sealed valves are usually leak tested using a mass spectrometer to detect leakage rates below 1x10E-06 std.cc/sec.


5. Bellow-sealed bonnets are backed up with a standard stem packing set and a leakage monitoring port between the bellows and the packing in order to prevent catastrophic release of hazardous fluid in the event of a bellows leak.


6. It has double seal capability , thus is more reliable.

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