Difference between unidirectional and bidirectional compensators

Difference between unidirectional and bidirectional compensators
There is a wide range of classification of bellows compensator. According to the compensation amount can be divided into: axial type, transverse type and angle type bellows compensator; according to the connection: welding and flange; according to the material: metal bellows compensator and non-metallic bellows compensator; according to the flow direction can be divided into: one-way and two-way counterflow.
 
The simple point of unidirectional bellows compensator is that the medium flows from one end to the other. The structure of the bellows compensator is one end is fixed end, the other end is the active end. Only one side can move when working. Two-way bellows compensator is different, it can be expanded and moved at both ends, work at the same time to compensate. General two-way bellows compensator compensation volume is greater than the one-way bellows compensator, the stability performance is also different.
 
In terms of installation, one-way bellows compensator and two-way bellows compensator also has a big difference: the bellows compensator installed near the fixed bracket is a one-way bellows compensator (so at this time the bellows compensator on one side to absorb the thermal expansion of the pipe), installed in the middle of the two fixed bracket pipe section for two-way bellows compensator (because at this time the bellows compensator to absorb the thermal expansion of both sides of the pipe).
 
The above is the basic definition and difference between one-way bellows compensator and two-way bellows compensator. In fact, many customers who do not understand the bellows compensator think it is very simple, just to compensate the thermal displacement of the pipeline. In fact, there are many types of corrugated compensators, and the working conditions and environments used vary. It is very important to choose the right structure. If the selection is not correct, there is a great danger that the whole pipeline will be damaged in a serious way.