The corrugated tube stop valve is of non rising stem design. The upper end of the corrugated pipe is welded to the sealing bowl and the lower end is welded to the valve stem. The corrugated pipe plays the role of the first seal on the valve cover and valve stem hole. In addition, the second seal is the packing gland. Compared with the shortcomings of ordinary packing stop valves that are prone to aging and leakage, the metal corrugated pipe seal is safer and more durable, has a longer service life, greatly reduces the frequency of maintenance and replacement, and saves Unit cost of use.

Valves are mainly connected by flanges and can be processed into butt welding, socket and other connection methods.

The welding material for the valve seat is 507Mo, and the thickness meets the standard. The hardness of the valve disc has been quenched, and the hardness is around 40. The valve stem has an indication of the lifting position, making the valve switch status more intuitive.