Welded bellows

Medium isolation

Corrugated pipe is used as isolation element, separating the two kinds of medium or preventing the harmful fluid into the equipment.
   
Bellows valve in the work process, the bellows and the stem work together with axial displacement and reset, while it also bears the pressure of  fluid and absolute seal. The working stroke of the bellows is generally the 1/4 of path. The axial displacement of the corrugated pipe should be limited by the mechanical limit through the valve stem, which is not allowed to plastic deformation and distortion.

 

The cut-off valve, throttle valve, regulating valve, pressure reducing valve in the field of nuclear industry, petroleum, chemical, pharmaceutical, aerospace and so on.


 

 

Performance parameter

 

Double bellows as standard configuration

 

DN15-DN100 with throttle valve head as the standard configuration

 

Maintenance free

 

Cooling type valve cover design

 

The stem is sealed by bellows

 

Packing seal ensures double safety

 

Tape stroke indicator

 

Dark bar design (internal thread)

 

Corrugated pipe anti twisting device

 

The stem threads are located outside the valve body

 

Stem thread hardening