ANSI standard NBR rubber expansion joint

 

 

Introduction: 
1. This product can greatly reduce pipeline system shock and noise. And can fundamentally resolve pipe joints displacement, axial stretch and non-concentricity.
2. By using different materials, it can be made many kinds to cater for different medium and environment. Such as        acid resistance, alkali resistance, corrosion resistance, oil resistance and heat resistance etc.

3. The material is pure rubber, sealing is very good. It is in light weight, very easy for installation . This product has long life performance, but must be not contact with sharp metal instruments to avoid piercing the sphere. 

4. The product can be used for lift and transportation of raw water and sewage, transportation of water supply cooling cycle water thermal power ,condensate water of metallurgy industry and chemical industry.

 

The material of  Flexible Rubber Joint you can see.

NO	Name	Material
1	Inner  rubber	11R, CR, EPDM, NR, NBR,
2	Outer  rubber	11R, CR, EPDM, NR, NBR
3	Framework  layer	Polyester  cord  fabric
4	Flange	Q235
5	Reinforcing  ring	Steel  wire  rope

 

 

Note:1.Please remark the application standard of strenqth and connection size when placing an order.

2.If the televant parameters of flexing rubber joints needed are not within the scope of the foregoing list ,please remark .This company can design and manufacture on behalf of you.

Design  picture.

 

Flexible Rubber Joint Buried Protective Device

The flexible rubber joint buried protective device developed by our company is designed with enough space around and has no influence on rubber joints displacement performance and can separate rubber joint from exterior earth layers and keep pipes freely moving at device ends without resistance. After installing pipes lines, the backfilled ground will be leveled off as usual, on which, vehicles can run well, heavy materials are placed or equipment be installed.

 The buried device consists of two hollow hemicycles, which cover the rubber joint and pipe flat welding flange, there are two hemicycle planes on both ends and steel balls installed on exterior pipelines of flanges on two sides so as to help slide, which will not damage the pipeline exterior surface and ensure pipe line use period. The device exterior round surface and vertical plane support shall be based on earth layer depth so as to bear above pressure.

 The device is equipped with some involution lock bolts for next installation. Installation direction: install rubber joint, paint asphalted in-side protective device, install below ? of protective device, put upside ? of protective device, close involution lock bolt (keep the rubber joint remaining at the center of the device when installing) paint asphaltum outside the protective device, back fill earth, tamp and press below and upside parts, concrete and cushion rubber, pave ground(better set permanent sign for later check and change).

  The device is the only invention in the country, and it was ever well used in Guangdong Dongguan 4^th Water Supply Plant, Qinghai Salt Lake Project and Shanghai Changqiao Water Supply Plant in 2000, 2001 and 2002. 

  Special attention: please provide buried depth in order so that we can design reasonable protective device for you. Generally the device can be used for over 30 years if anti-erosion on the device surface is well done.