Raw rubber is elastic and lacks the necessary plasticity during processing, so it is not easy to process. In order to improve its plasticity, the raw rubber should be plasticated, so that the mixing agent can be easily evenly dispersed in the raw rubber. At the same time, it helps to improve the permeability of the rubber material into the fiber fabric and the molding fluidity during the calendaring and molding processes. The process of degrading long chain molecules of raw rubber to form plasticity is called plasticizing.
According to the connection mode, it can be divided into three types: loose flange type, fixed flange type and threaded type; According to the structure, it can be divided into single sphere, double sphere, curved sphere, etc. The tubular valve part is composed of inner and outer rubber, cord fabric and steel ring, which is formed by vulcanization and then loosely combined with metal flange or parallel joint. This product can 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. Shanghai Dongfeng Valve Co., Ltd. is a professional designer, manufacturer, processor and seller of electric ball valves, electric ball valves and best-selling markets. Our factory has strong technical force, complete production equipment, and the processing capacity to develop and produce various fluid equipment. It also cooperates with Songjiang University Town and scientific research institutions, and adheres to the road of prospering the factory through science and technology. Key backbone enterprise of electric ball valve and other pipeline equipment products. It has high popularity and influence in petroleum, chemical industry, metallurgy, power, construction, heat, water supply and other industries, and its products have always been in short supply.
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. Internal and external threads play a direct sealing role.