The bellows stop valve improves the sensing efficiency of the outlet pressure change, improves the sensitivity, and greatly reduces the pressure deviation caused by the upstream pressure change, flow change and other factors. Improved streamline distribution and reduced noise. Bellows globe valve is suitable for flammable, explosive, highly toxic, toxic fluids, high temperature heat transfer oil, liquid ammonia and other media with nominal pressure PN1.6～16MPa and working temperature -29～350℃.

Structural features of bellows globe valve:



1. The hydraulically formed bellows forms the first seal. The key component of the chlorine bellows globe valve is the metal bellows. The lower end and the valve stem assembly are automatically welded and the upper end is automatically welded to the connecting plate. A metal barrier is formed between to ensure zero leakage of the valve stem.

    2. The upper sealing device adopts multi-stage PTFE sealing materials to form a combined seal to ensure that the stuffing box of the valve has no medium leakage during the life of the valve, and eliminates the weak seal of the ordinary valve stuffing box, the easy leakage of the medium, and even the accident. possible.

　 3. The middle flange adopts a tongue-and-groove sealing structure to ensure reliable sealing of the middle flange even when the pipeline pressure fluctuates.

　 4. The matching structure of the sealing pair adopts cone and plane type, and the sealing is automatically compensated to achieve double insurance effects. The sealing performance is stable, there is no adhesive wear, and the service life is long.

The bellows globe valve is specially designed for chlorine gas, liquid chlorine and various high-dangerous media. Because it has a bellows seal in addition to the packing, it has a double sealing structure, which can effectively prevent the leakage of dangerous media. In terms of structure, combined with the actual situation of valve applications at home and abroad, the valve disc and valve seat sealing pair adopts strong corrosion-resistant PTFE and Stellite cemented carbide, which has stable sealing performance, safe and reliable use, and strong corrosion resistance. , No internal or external leakage of the medium, and easy operation.