Bellows stop valve, commonly known as diaphragm valve, forms a metal barrier between fluid medium and atmosphere through automatic roll welding to ensure the design of zero leakage of valve stem. Compared with traditional valves, it has the following advantages:

1. Long service life, reduce maintenance times and reduce operating costs. The rugged bellows seal design ensures zero leakage of the valve stem and provides maintenance free conditions.

2. The valve has small opening and closing torque, reduces labor intensity, and can drive any form of driving device for remote control.

3. The appearance is beautiful, the valve channel has a smooth streamline and reduces the flow resistance coefficient of the valve. It is a high-quality energy-saving product.

4. The outer seal of bellows stop valve adopts bellows seal and graphite and stainless steel gasket seal, which is reliable and can be used for a long time without replacing the sealing filler. In industrial use, the leakage caused by the stop valve: high temperature, highly toxic, flammable and explosive, radioactive media, etc., not only pollutes the environment, but also often causes significant personal and property losses. This kind of valve should be more safe and stable, and foreign advanced standards should be strictly adopted in design and manufacturing