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Characteristic of Bellows Designs 2
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Characteristic of Bellows Designs 2

Views: 5     Author: Site Editor     Publish Time: 2017-04-30      Origin: Site

Characteristic of Bellows Designs

Single Ply

bellow single ply.png

Typical Application

* Shell and tube heat exchangers

* Clamshell bellows

* Penetration seals

* HVAC piping

 

Characteristics

* One ply

* Relatively thick

* Robust

* Higher spring rate

* High lateral stiffness

* Relatively cheap

* Good NDE when installed

* Weld attachment simple

* Weld repair(temporarily) possible

 

 

Multi-Ply

bellow multi-ply.png

Typical Application

* HT& HP steam & process piping

* Equipment connections

* Vibration dampening

 

Characteristics

* Between 2 and 5 plies

* Individual plies relatively thin

* Total wall thickness = thick

* Extremely flexible in all directions

* Excellent vibration damper

* Very short compared to single ply with similar flexibility

* Leak monitoring possible

* No sudden leaks

 

Pressure Thrust

Thrust = Bellows Area X Pressure

Lb.】 【sq.in.】    【psig

 

pressure thrust.png



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