1. Stainless steel bellows
2. Hydraulic pressure forming
3. Bushing or flange
4. High pressure resistant
Features and use of valve expansion bellows
Corrugated pipe adopts multi-layer structure, than single layer to
reduce the stiffness, increasing the displacement, to shorten the
length of the valve.
1. The design specification
On the basis of relevant standards specified in the valve design
manual stem diameter, smallest minimum opening stroke and
corrugated component by external pressure welding form of graphic
design, corrugated pipe component structure is reasonable, compact,
is helpful to the design of the valve structure miniaturization.
2. The main technical specifications
Using range: The product is suitable for the corrugated pipe
cut-off valve, corrugated pipe gate valve, throttle valve, bellows
wave spinning tube regulator, etc.
Nominal diameter: 16250
Nominal pressure.: PN1.6 PN2.5, PN4.0 PN6.4, PN10.0, PN14.0.
Expansion bellows design pressure form the outside pressure,
pressure is 1.5 times the nominal pressure.
Working temperature: - 196 ° C -- 1000 ° C