Liwei rubber joint common packge is unfumigation wooden case (Out package) and Plastic film and Textile membrane(inside package). We can make change as your request.
Shipped in 10 days after payment
DN1200 single ball expansion rubber joints introduction
Rubber joint is also called: flexible rubber expansion coupling, rubber soft connection, and soft rubber joint, rubber compensator, rubber shock hose, rubber shock reducer, is one kind of high elasticity, high air tightness, medium resistance and weather ability pipe fittings.
Rubber expansion joint consists of outer rubber, inner rubber, framework layer, and reinforcing bar and flange. Relying on rubber’s special performances as long range elasticity, air impermeability, medium, climate and radiation resistance, rubber expansion couplings can reduce the vibration and noise of pipeline, and can be caused by the temperature change of heat bilges cold shrink compensation effect.
According to different material, acid resistance rubber joint, alkali proof rubber couplings, oil resistance rubber couplings, thermos table rubber couplings, low temperature resistance rubber joint, wear resistance rubber coupling can be made to suitable for various kinds of medium and environment.
Directions of use:
When expansion rubber joint was used in high water, pipe must have fixed support or fixed bracket, or the product should be installation device to prevent pulled off. The fore of fixed support or fixed bracket must be greater than the axial force.
IIR, CR, EPDM, NR, NBR,
IIR, CR, EPDM, NR, NBR
Polyester cord fabric
Polyester cord fabric
Steel wire rope
Rubber joint (mm) GJQ(X)-DF
Polyester cord fabric
Steel Wire Rope
appx, 6 times working pressure
Packaging & Shipping
Henan Liwei Industry Co., ltd. (the former Zhengzhou Liwei Rubber Products Co., Ltd.)
located at Shangjie District. Zhengzhou city is a manufacturer specializing in processing various steam, water, windpipe expansion and compensation joints, and a main base for producing rubber, metal and non-metallic pipe joints, It is also the appointed enterprise by the former chem-
-ical industry ministry, national construction ministry and general petrol chemical company
member unit China Water Supply Association and power Equipment Network Union, and joints production unit recommended by China Water Association and National Metallurgy Ministry.
Our Liwei brand flexible rubber joints have various heavy calibers, type and high quality in the county, The products series have won four patents and our company is named “Quality and Credit Unit” by Henan Province, Our product have become the first choices for national power design ,municipality and metallurgy units.
At present, our product includefour serial flexible rubber joints, three types, tens of standard and common specification, eight series of metal pipe loosing compensation joints and fourteen standard specifications and types, eleven types of standard and common specification products for serial wind pipe non-metal compensators. Our annual comprehensive production capacity
can reach over forty thousand sets and we also process various pipe joint matching flat welding flanges (steel international/non international standard). Our products have been sold in over
thirty cities and autonomous regions, With China’s entry to the WTO; our products have been
exported to foreign countries as Italy. Spain, Pakistan. Singapore and East European countries, etc, and the products have been become public famous brand products for design units and clients.
If you want other size expansion joint rubber joint size, please read this datesheet
During pipe construction, the flexible rubber joint shall be kept natural, do not deform the product purposely when installing.
During installing flange losing rubber 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 sym-metric six/four bolts and keep balls and flanges remaining in order.
When connecting rubber joint 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 pressured and screwed down and word congruously. If the surrounding circumstance is bad, spring washer and flat gasket shall be added to prevent bolts from losing.
If arch/high arc rubber joints 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.
When frequently use the rubber joint or near water(oil)pup nozzles, stop block shall be added on both ends of flans so as to reduce the impace on pump and pipe caused by the length changes of rubber joint.
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 joint and flange be a steel body. After welding, remove the welding again and keep the rubber joint natural as usual.
When welding metal and flange, remember to cover the rubber joint with shielding and prevent from burning balls.