Hydrogen bellows globe valve
Alternative name: Bellows hydrogen globe valve
Model: QWJ41F-25P
Overview of hydrogen bellows stop valve:
The double valve rod design of hydrogen bellows globe valve and the anti torque combination device of valve rod and bellows have solved the single choice of valve rod wear resistance or corrosion resistance, lengthening, multi wall, anti torsion, long-life bellows, completely refreshing the opening and closing life of ordinary domestic bellows, with 10000 no-load switch tests. 360 degree free rotation valve disc can clean impurities and carry fluid to close different surfaces of the valve seat without transmitting vibration to the valve stem.
Bellows hydrogen globe valve Bellows hydrogen globe valve is designed as a protective space. The bellows are sealed in a closed space and are not affected by medium, pressure and temperature. The lower end and the valve stem assembly are welded by automatic roll welding, and the upper end and the connecting plate are welded by automatic roll welding to form a metal barrier between the fluid medium and the atmosphere. Therefore, the bellows pass 100% helium test to ensure zero leakage. The back seal is designed with a travel limiter and bellows anti vibration equipment in the open position.
Material and specification of bellows stop valve:
Diameter: DN15 ～ DN150
Pressure: PN25 ～ PN40
Material: carbon steel, stainless steel
Filler: graphite, PTFE
Bellows: 304, 316, 316L
Handwheel: steel plate pressing
The shell of Bellows globe valve with extended diameter bellows adopts the German coated sand casting technology, which greatly improves the surface finish and mechanical properties of the valve body, reduces the occurrence of pores, sand holes and cracks, and enhances the tensile strength of the casting. Disc design can be provided according to the requirements of different working conditions: throttle disc, stop check disc, flat soft seal disc.
