It can prevent the leakage or damage of the compensation joint caused by excessive displacement of the pipeline. It is mainly used for loose sleeve connection of the pipeline to absorb axial displacement and bear pressure thrust within the allowable displacement range. It is suitable for welding with the pipeline while connecting with the flange. During installation, adjust the installation length of both ends of the product and the pipeline or flange, and tighten the gland bolts diagonally and evenly, Then adjust the limit nut, so that the pipeline can be freely expanded within the expansion amount, lock the expansion amount, and ensure the safe operation of the pipeline.
The joint is also called electric ball valve, flexible electric ball valve, electric ball valve of valve, shock absorber, valve shock absorber, valve expansion joint, etc. Mainly JGD type and KXT type. This product is a tubular valve part composed of inner and outer rubber, cord layer and steel ring, which is vulcanized at high temperature and high pressure and then loosely combined with metal flange or parallel joint. This product makes use of the advantages of the valve such as high elasticity, high gas resistance, medium resistance, weather resistance and radiation resistance to reduce vibration and noise, and can compensate for thermal expansion and cold contraction caused by temperature changes. It is widely used in various pipeline systems. The electric ball valve is generally composed of an inner rubber layer, a fabric reinforcement layer (the reinforcement layer has multiple layers of rubber scraped nylon cord fabric), a middle rubber layer, an outer rubber layer, an end reinforced metal ring or a steel ring, which is formed by vulcanization at high temperature and pressure, and loosely combined with a metal flange or a parallel joint.
This product makes use of the advantages of the valve, such as high elasticity, high air permeability, medium resistance, weather resistance and radiation resistance, which can reduce the vibration and noise of the pipeline and compensate for the expansion and contraction caused by temperature changes. The unvulcanized valve is of little use value in use, but the degree of sulfur deficiency vulcanization is not enough? The valve performance will decline if the vulcanization time is not enough to reach a good state, and if the over sulfur vulcanization time exceeds, the performance will decline significantly.
Installation instructions for electric ball valve: 1. It is strictly prohibited to install the electric ball valve beyond the displacement limit. Electric ball valve 2. The pipeline must have a fixed support or fixed bracket, and the force of the fixed bracket must be greater than the axial force. During vertical installation and overhead installation, corresponding fixed supports and load-bearing supports shall be installed at both ends of the product to prevent pulling off under working pressure.
3. The mounting bolts shall be tightened symmetrically and gradually to prevent local leakage. 4. During installation, keep away from heat sources, and do not use media that do not meet the requirements of this product.
5. When installing the electric ball valve, it is strictly prohibited to install it beyond the displacement limit. 6. The installation bolts shall be symmetrical and tightened gradually to prevent local leakage.
For the working pressure above 7.1.6 MPa, the bolts shall be installed with elastic pressure pads to prevent the bolts from loosening during operation.
8. During vertical installation, both ends of the joint pipe shall be supported by vertical force, and anti pulling device can be used to prevent pulling out under working pressure. 9. The installation position of the electric ball valve should be far away from the heat source and ozone area. It is strictly prohibited to expose to strong radiation light and use media that do not meet the requirements of this product
10. It is strictly prohibited to scratch the surface and sealing surface with sharp tools during transportation, loading and unloading of electric ball valve.