Four installation precautions for electric ball valve
1、 Purpose of electric ball valve: electric ball valve is mainly used for axial compensation and has super bending resistance, so the influence of pipe sinking is not considered. The electric ball valve can realize free expansion compensation under the protection of its shell and guide sleeve. Other performances are the same as those of ordinary electric ball valve. 2、 Operation instruction The electric ball valve belongs to a compensation element. The effective expansion and deformation of the bellows of its working body is used to absorb the dimensional changes of pipelines, conduits, containers, etc. caused by thermal expansion and cold contraction. The electric ball valve can also compensate the axial, transverse and angular displacement of pipelines, conduits, containers, etc. It can also be used for noise reduction and vibration reduction.
It is widely used in modern industry. Electric ball valve is an expansion element used on directly buried pipelines.
The shell and guide sleeve of the electric ball valve realize free expansion compensation under protection. The electric ball valve is added with protective measures on the basis of the original corrugated pneumatic valve, and the outer sleeve can expand and contract freely. At present, the electric ball valve is widely used in modern industry. Other performances are the same as those of ordinary corrugated pneumatic valves. The electric ball valve is composed of a bellows and two end pipes. The end pipes are either directly welded with the pipeline or welded with the flange and then connected with the pipeline flange. The pull rod on the electric ball valve is mainly a rigid support during transportation or used for product deformation adjustment. It is not a load-bearing part.
3、 Installation precautions:
3.1 In order to make the electric ball valve play the role of compensation, fixed supports must be set at both ends of the pneumatic valve to prevent the pipeline from moving outward and stretching under the influence of internal pressure and thrust.
3.2 One end of the electric ball valve (refers to the dead end of the direct buried pneumatic valve with one-way compensation) shall be close to the fixed support at one end, and the movable head of the electric ball valve shall be used to compensate the pipeline.
3.3 Set the distance between the two fixed supports according to the compensation amount of the electric ball valve, and the compensation amount is generally not greater than the pipe diameter.