PN16 twin sphere flexible NBR bellow rubber expansion joint with pressure balance ring
PN16 twin sphere flexible NBR bellow rubber expansion joint with pressure balance ring
Double sphere rubber expansion joint is also called double ball rubber joint, double bellow expansion joint, double sphere flexible connection, twin sphere rubber expansion joint etc. It has two spheres, comparing with single sphere rubber expansion joint, it have bigger installation length, bigger compensation capacity. Double sphere rubber expansion joint is also consisted of flange, pressurized ring, key frame, inner and outer rubber layer. Rubber material is usually EPDM, flange material is usually carbon steel galvanized, flange standard is usually ANSI 150LB, JIS 10K, DIN PN10,PN16 etc. The working pressure is usually PN10,PN16, nominal size is usually since from DN40 to DN1200. Working temperature is usually -15~+80 celsius degree. Biggest characteristic is still reduce the vibration and noise of pipeline, protect the pipes and prelong the service life of pipe!
Material of every part
| No. | Name | Material |
| 1 | Inner and outer rubber | EPDM/NR/NBR/FKM/Neoprene |
| 2 | Key frame | Nylon cord fabric |
| 3 | Pressurized ring | Steel wire strand |
| 4 | Flange | Carbon steel galvanized/SS304/SS316/Ductile iron |
Technical conditions
| Working pressure | PN16 |
| Test pressure | PN24 |
| Explosion pressure | PN48 |
| Applicable temperature | -15~+120 celsius degree |
| Applicable media | Air, compressed air, water, sea water, hot water, oil, acid and alkali etc. |
Main connecting dimension
| Nominal diameter | Face to face length | |
| mm | inch | mm |
| 40 | 1 1/2 | 165 |
| 50 | 2 | 165 |
| 65 | 2 1/2 | 175 |
| 80 | 3 | 175 |
| 100 | 4 | 225 |
| 125 | 5 | 225 |
| 150 | 6 | 225 |
| 200 | 8 | 325 |
| 250 | 10 | 325 |
| 300 | 12 | 325 |
| 350 | 14 | 330 |
| 400 | 16 | 330 |
| 450 | 18 | 330 |
| 500 | 20 | 350 |
| 600 | 24 | 350 |
Datas above are only for reference, DN40-DN1200 are applicable,pls contact us for more details!
Other type of rubber expansion joint
Our factory
Our inventory
Packing and shipping
Double sphere rubber expansion joint is packed by plastic film, then put into plywood case.
Every batch production is finished, we'll pick up 2% products to do hydro test, to make sure working pressure is confirming to customer's requirements! In addition,we'll also make dimension inspection, raw material test to make sure they are qualified, then we'll arrange packing and deliverying!
Company qualification
foreign trade customers visit
welcome to visit us, and hope to have a deep talk with you,then start a long term cooperation with you! Win cooperation is our business philosophy! So send inquiry to us,you can get a quick reply within 5 minutes !
Related Products
-
Carbon steel flange single sphere EPDM coupling rubber bello...
-
Flange connection general stainless steel ss compensator met...
-
Rotating flange connection SS304 flexible metal braided hose
-
Water pipe emergency repair high pressure stainless steel le...
Get in touch!
If you have any suggestions or opinions about our products, please leave a message, and we will immediately answer your questions. Thanks for your support.