Ductile iron flange flexible single sphere rubber expansion joint
Ductile iron flange flexible single sphere rubber expansion joint.
Rubber expansion joint is also called rubber bellows, rubber joint, single sphere flexible connection, expansion joint bellows etc, it is mainly consist of two pcs flange and one rubber sphere body, flange is used for connection, rubber sphere body is flexible, it can absorb the axial, horizontal and anular displacement, the normal working pressure is 6~40 bars, normal working temperature is -15~+80 celsius degree, the norminal size is from DN25-DN3000, the nornal material of rubber is natural rubber, EPDM, Neoprene, NBR and PTFE etc, the normal material of flange is carbon steel galvanized, carbon steel painted, casting iron painted and stainless steel etc, of course, if you have any special requirements, pls let us know, we'll recommend you a good solution.
Material of every part
| No. | Name | Material |
| 1 | Inner and outer layer | EPDM,NBR,NR,BR,etc |
| 2 | Frame | Nylon fabric cord |
| 3 | Stabilizing ring | Steel wire strand |
| 4 | Flange | Ductile iron，CS galvanized，SS304,SS316 |
Technical condition
| Type | 1 | 2 | 3 |
| Working pressure | PN10 | PN16 | PN25 |
| Explosion pressure | PN20 | PN30 | PN45 |
| Vacuum degree | 53.3 Kpa | 86.7 kpa | 100 kpa |
| Applicable temperature | -15~+80 celsius degree ( specal can reach -30~+150celsius 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 |
| DN32 | 1 1/4 | 95 |
| DN40 | 1 1/2 | 95 |
| DN50 | 2 | 105 |
| DN65 | 2 1/2 | 115 |
| DN80 | 3 | 135 |
| DN100 | 4 | 150 |
| DN125 | 5 | 165 |
| DN150 | 6 | 180 |
| DN200 | 8 | 210 |
| DN250 | 10 | 230 |
| DN300 | 12 | 245 |
| DN350 | 14 | 255 |
| DN400 | 16 | 255 |
| DN450 | 18 | 255 |
| DN500 | 20 | 255 |
| DN600 | 24 | 260 |
Datas above are only for reference, pls contact us for exact data!
Other types of rubber expansion joints.
Raw material of rubber expansion joint
Our factory and workshop.
Our inventory
Packaging Details and Shipping
Single sphere rubber expansion joint is packed by plastic film, then put into plywood case.
We will arrange suitable shipping methods for you according to your needs.
Hydro test
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
Professional and warm team
We welcome you 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!
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