What is a rubber expansion joint? The various names are dazzling. So today I will introduce some of the structure, type, function and application range of rubber expansion joints to help you understand more clearly when purchasing.
Structure:
Rubber expansion joints, also known as , are mainly composed of two parts: a rubber sphere and metal flanges at both ends.
The materials of rubber spheres are various, and the common ones are EPDM (high temperature acid and alkali resistance), NBR (oil resistance), NR, SBR and Neoprene. There are also many kinds of flange materials, such as carbon steel, carbon steel, CS zinc plated, galvanized, epoxy coated, CS epoxy resin coating,SS304, 316, 321, 904L. At the same time, flange standards and pressure ratings vary. Common standards are DIN、ANSI、JIS, etc.
Type:
Single sphere rubber expansion joint
double sphere rubber expansion joint
different diameter double sphere rubber expansion joint
Function：
It mainly uses the properties of rubber, such as high elasticity, high air tightness, medium resistance and radiation resistance, and adopts high-strength, high-temperature and thermal-stability polyester cords that are biased and compounded. It has high internal density, can withstand high pressure, and has excellent elastic deformation effect. In places where frequent changes in cold and heat during operation are likely to cause pipeline damage, the elastic sliding displacement of rubber and the heat transfer and dissipation function of deformation mechanical force are used to effectively eliminate the displacement and physical damage of pumps, valves and pipelines themselves.
Application range:
Due to the good comprehensive performance of rubber expansion joints, it is mainly used for the lifting and transportation of raw water and sewage, feed water and cooling circulating water in thermal power plants, metallurgical industry, condensate water, pipeline transportation of chemical substances in chemical industry, and cooling in petrochemical industry. , flexible connection between long and short distance pipelines in dilution and other industries. Because rubber has high wear resistance, it is also suitable for low-temperature transportation of granular and powdery and vapor in all industries.
Post time: Jun-14-2022
