How to reasonably and correctly select the model and specification of pneumatic ball valve? Pneumatic ball valves are widely used, and the shadow of pneumatic ball valves can be seen in almost all pipelines and devices. There are many types of pneumatic ball valves, and their structures and functions are different. How to select them is a headache. The following details how to reasonably select pneumatic ball valves according to different use requirements and use environments.

What material should be selected for metal ripple compensator
The reliability of metal bellows compensator consists of design, manufacturing, installation, operation management and other links. Reliability should also be considered from these aspects. In addition to the working medium, working temperature and external environment, the possibility of stress corrosion, the role of water treatment agent and materials, pipeline cleaner should be considered. In addition to the working medium, working temperature and external environment, and on this basis, welding, Composition, material performance and price ratio Bellows material selection, economical and applicable bellows manufacturing materials
Generally speaking, the materials used for bellows shall meet the following requirements: high elastic limit, tensile strength and fatigue strength to ensure the normal operation of bellows
Good plasticity, easy to form and process bellows, sufficient hardness and strength can be obtained through subsequent processing (cold hardening, heat treatment, etc.), and good corrosion resistance can meet the demands of bellows in different environments
Good welding performance, meeting the requirements of welding process for corrugated pipes in the consumption process. As for the heat pipe network in the drainage ditch, when the compensator is low in the pipeline, rainwater or accident sewage will submerge the corrugated pipes, so we should choose materials with strong corrosion resistance, such as iron nickel alloy and high nickel alloy. Because of the high price of this material, Therefore, only one layer of corrosion resistant alloy can be added on the surface of the bellows
The failure mode and cause analysis of bellows compensator shows that the planar stability, circumferential stability and corrosion resistance of bellows are related to the fatigue life of bellows. Too low fatigue life will reduce the stability and corrosion resistance of metal bellows