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.
BF type single flange limit expansion joint is composed of loose sleeve expansion joint, limit stub pipe and other components. 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 pneumatic ball valve, flexible pneumatic ball valve, valve pneumatic ball 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 pneumatic ball valve is generally composed of inner rubber layer, fabric reinforcement layer (reinforcement layer has multi-layer rubber scraped nylon cord fabric), middle rubber layer, outer rubber layer, end reinforced metal ring or steel wire ring, which is formed by high temperature and high pressure vulcanization and loosely combined with metal flange or 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. Linear structure: the general structure of unvulcanized valves. Due to its large molecular weight, it is in the form of fine ball without external force. When the external force is removed, the entanglement of the fine particles changes, and the molecular chain rebounds, resulting in a strong recovery tendency, which is the origin of the high elasticity of the valve.