Characteristics of spring pneumatic butterfly valve
1、 Main use:
This machine is mainly used for fatigue life test of various spiral springs, pneumatic butterfly valves, seal springs, etc. It is widely used in spring, pneumatic butterfly valve consumption, application and other industries.
2、 Function characteristics:
1. Adjust the amplitude and frequency of the spring according to the technical requirements of the spring.
2. LCD Chinese characters are displayed, and the number and frequency of experiments can be input into the program according to the request, which is automatically completed.
3. The preset number of experiments stops automatically.
4. The connecting cam of the motor and reducer drives the connecting rod to reciprocate and complete the contraction of the spring.
5. Simple operation, reliable and stable operation.

Can the compensator be replaced? Confirm the environment before purchasing compensator
Can corrugated compensator and pneumatic butterfly valve replace each other? There are two kinds of compensators commonly used in the design of gas pipeline, which are actually set to eliminate the stress of the pipeline itself and the external force:
1. First of all, corrugated pipes can only eliminate longitudinal stress. For example, in high-rise design, it is better to add corrugated pipes before the ball valve on the pipe is introduced (along the air flow direction), mainly to eliminate the damage to the pipe due to building settlement. For buried pipes, corrugated pipes are also required in front of the valve, which is to avoid the damage to the system caused by the thermal expansion and contraction of the pipe itself, In fact, it is easy to disassemble the ball valve when installing the corrugated compensator.
2. Besides, pneumatic butterfly valve can not only eliminate longitudinal stress, but also horizontal stress. For example, when the gas pipeline needs to be elevated on two adjacent buildings on different foundations, it is better to add pneumatic butterfly valve in the middle, mainly to avoid damage to the pipeline caused by different settlements of the two buildings.
3. The bending of the pipe can also eliminate the stress, and can also be used as a compensation. For example, a zigzag bend can play the role of a pneumatic butterfly valve.
For the material selection of bellows used in industrial engineering, in addition to the working medium, working temperature and external environment, the possibility of stress corrosion, the impact of water treatment agent and pipeline cleaning agent on the data shall also be considered, and on this basis, the welding and forming of bellows data as well as the performance price ratio of data shall be separated, The economic and applicable manufacturing materials of bellows are optimized.
The reliability of metal ripple compensator in manufacturing is composed of design, manufacturing, device and operation management. Reliability should also stop thinking from these aspects.
In the establishment of heat pipe network for trench laying, when the pipeline where the compensator is located is in a low terrain, rainwater or accidental sewage will soak the corrugated pipe, so it is necessary to consider to select data with stronger corrosion resistance, such as iron nickel alloy, high nickel alloy, etc. Due to the high price of such materials, when manufacturing bellows, it is possible to consider adding a layer of corrosion resistant alloy only on the surface in contact with corrosive media.
On the other hand, fatigue life design can be seen from the failure type and cause analysis of bellows compensator that the planar stability, circumferential stability and corrosion resistance of bellows are related to their displacement, i.e. fatigue life. Too low fatigue life will lead to the decline of stability and corrosion resistance of metal corrugated compensator.