Specifications

Single Sphere Standard Rubber Expansion Joint
1.Connection:flange or unions
2.Body material:NR,CR,NBR,EPDM

Single Sphere Standard Rubber Expansion Joint    

 

Flexible Rubber Expansion Joints:       

1) Material	EPDM, NBR, NR, Polarity rubber
2)Construction	Inner core, Outer cover, Frame, Metallic ring, M. I. union or Carbon steel flange
3)Connector Approval	Flanged, flange type Threaded, Union type Rubber Joint
4)Type	Single sphere or arch, Double spheres or arch
5)Threads	DIN, BSPT, BSP, NPS, NPT, Metric, (ISO7/1, DIN 2999, ANSI B1.20.1)
6)Flange Drilled	BS, DIN, ANSI, JIS or others provided drawing samples
7)Surface	Galvanized, Epoxy
8)Normal Specification	DN32 to1200mm(1 1/4 to 48 inch); For threaded union connector only be DN15 to 80mm(1/2 to 3 inch)
9)Usage	Protecting piping and equipments systems from stress or motion
10)Application	Air, Pressurized air, Water, Sea water, Hot water, Oil, Acid, Alkali etc

 

Rubber Expansion Joints Detail Information:

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 polar rubber, sealing is very good. It is in light weight, very easy for installation and maintenance. This product has long life performance, but must be not contact with sharp metal instruments to avoid piercing the sphere. 
4. If used at overhead station, need to use flexible support, tight the bolt diagonally during installation. 
5. If the pipeline pressure is too high, need to use limit bolt to connect the both ends flange together. 
6. Flange connection comply with GB4216.34216.

5 standard, if use other standard, need to notice again. Working pressure grade is 0.6MPa, 1.0MPa, 1.6MPa, 2.5MPa.

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