Twin sphere rubber expansion joint is similar to single-ball joint in structure, but has a second sphere to provide more pipeline motion absorption capacity, and even higher noise and vibration control efficiency. Twin sphere rubber expansion joint can withstand the most stringent pipe system configuration. They allow for axial compression or extension, lateral deflection and angular motion.
Vibration absorption, noise reduction, high pressure resistance, good elasticity, large displacement, balance pipe deviation, easy installation
Suitable for suction and transportation (discharge).
Designed for greater compression, elongation and angular motion than single spherical expansion joints.
It is very suitable for absorbing thermal expansion and eliminating sound and vibration.
No gaskets and packing are required.
Good electrical insulator.
Absorb water pulsation and minimize water hammer.
Pressure piping system in building equipment and general industrial plant.
Pump and turbine circuits are used in power plants, industrial machinery and general purpose pump blowers.
Water supply and drainage pipes are used in water works and sanitary piping systems.
Pipelines in industrial plants and shipyards, etc.
1. When installing double spherical rubber joints, it is strictly prohibited to install them beyond the limit of displacement.
2. Installation bolts should be symmetrical, gradually pressurized and tightened to prevent local leakage.
For working pressure above 3.1.6 MPa, the installation bolt should have elastic cushion to prevent the bolt from loosening.
4. When installed vertically, the two ends of the joint pipeline should be supported vertically, and anti-pull-out device can be adopted to prevent pull-out under pressure.
5. Double sphere rubber joint installation should be far away from heat source. Ozone zone zone. Strong radiation exposure and use of media that do not meet the requirements of this product are strictly prohibited.
6. It is strictly forbidden for sharp appliances to scratch surface and seal surface when double spherical rubber joint is transported, loaded and unloaded. Connection modes: generally there are threaded connection, flange connection and so on.
The multi-wave design of double-sphere rubber joint increases the length of rubber joint and the compensation. Special cold water, hot water, compressed air, natural gas and so on. With its superior design, novel structure and good sealing performance, it solves the problem of pipeline bursting and damage of pipeline connection equipment caused by thermal expansion and contraction, and effectively improves the service life of pipeline and the protection of equipment. Double spheres have greater compensation than single spheres. Because of its good comprehensive performance, the double-sphere rubber joint is widely used in chemical engineering, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, water heating, fire fighting, electric power and other basic projects, especially in pipelines with large vibration and frequent changes in heat and cold.
|Nominal Diameter(DN)||Length L||Diameter of the centralring of the bolt||Hole diameter quantitvd||Axial displacement||Horizontal Isplacement||Angular deflection|
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