Packaging & Delivery
Single sphere rubber flexible coupling: DN25mm-DN3600mm
Due to the rubber itself characteristics, single sphere rubber bellow expansion joint is the highest utilization of rubber, most stable performance product at the moment.On the basis of torsion displacement, transverse displacement, angular displacement, the axial compression, the axial elongation, deflection displacement, etc, single spherical rubber joint’s glue quantity is little, stability is very high, and service life is long., so it can be widely used.
Characteristic Feature of single sphere rubber flexible coupling:
(1)Small volume, light in weight, very good flexibility, Convenience installation and maintenance.(2)Transverse displacement, axial displacement, angular displacement(3)Reduce noise, shock absorption
We cut the rubber bellow, Inner rubber, outer rubber and frame layer is clear to show
DIN2501 PN16 flange drilling of DN65 rubber flexible coupling
Inner package is plastic, it can protect the rubber bellow expansion joints
Bad case package, it is not fixed at all
Plywood case, non fumigation, fixed
1. We have our factory and about 200 workers.2. Our company established in 1988, 30 years experience.3. The largest diameter DN3600.4. Our rubber flexible coupling has been used for 20 years and still under operation in Shanghai.5. We keep cooperation with 90% of Chinese power plants6. Hydraulic pressure tests and burst pressure tests can be made.7. The largest vulcanizing tank in Asia:5000mm*15000mm8. The member of CNEA(China Nuclear Energy Association)9. ISO9001:2008 and ISO14001:2004 certificate by CNAS(China National Accreditation Service Conformity Assessment)
1. During pipe construction, the rubber expansion joint shall be kept natural, do not deform the product purposely when installing.2. During installing flange loosing rubber expansion joint, the enhancing ring (jutted inner steel wire rope) of spherical two ends shall be completely installed inside the flange slot so as to prevent balls to break away from flanges when pipes bear pressure. During installing bolts, screw down symmetric six/four bolts and keep balls and flanges remaining in order.3. When connecting rubber flexible coupling and pipe flange, the bolt pole shall extend to the pipe flange so as to prevent from crushing or pricking the coved screw thread expanding because of pressure, all bolts shall be pressures and screwed down and word congruously. If the surrounding circumstance is bad, spring washer and flat gasket shall be added to prevent bolts from loosing.4.If arch/high arc rubber couplings are adapted(for six-angle bolt cannot pass through flange hole),double-head bolts shall be used and try to reduce spherical screw thread jut and avoid crushing balls expanding under pressure and prevent early damage of rubber.5. When frequently use the rubber expansion couplings or near water (oil) pump nozzles, stop block shall be added on both ends of flanges so as to reduce the impact on pump and pipe caused by the length changes of rubber joint.6. When adapting over DN1000 rubber flexible coupling, some length short pipe shall be made on one flange end so as to help installation and reduce labor strength. After connecting rubber expansion couplings and the short pipe and other pipe, weld the short pipe and relevant pipe together.7. In order to remove the radial deviation formed by short pipe welding, use round steel or other relevant metal to temporarily weld flanges on pipe’s two ends and make the rubber expansion joint and flange be a steel body. After welding, remove the welding again and keep the rubber joint natural as usual.8. When welding metal and flange, remember to cover the rubber expansion couplings with shielding and prevent from burning balls.