Malleable iron or ss304 threaded EPDM flexible bellow union rubber expansion joint
Malleable iron or ss304 threaded EPDM flexible bellow union rubber expansion joint
Double sphere union screwed rubber expansion joint is consist of union screwed and double sphere rubber expansion joint, the material of union screwed is usually malleable iron and stainless steel 304, the material of rubber is usually EPDM,Neoprene,NBR and natural rubber, the size is range from DN15 to DN80,namely since from 1/2inch to 3inch, the installation length of union screwed rubber expansion joint is usually 200mm, for DN65, it's 245mm, for DN80,it's 270mm. About working temperature, it's usually -15~+120 celsius degree, working pressure, it's usually PN10,PN16, this product is usually used in air conditioning fan coil etc.
Material of every part
No. | Item | Material |
1 | Union | Malleable iron (stainless steel 304 is also ok) |
2 | Inner and outer layer of rubber | EPDM (Neoprene, NBR, NR is also ok) |
3 | Frame | Nylon cord fabric |
Technical conditions
Working pressure | PN10 |
Explosion pressure | PN30 |
Applicable temperature | -15 ~ +115℃ |
Applicable media | Air, compressed air, water, sea water, hot water, oil, acid and alkali etc. |
Main connecting dimension
Size | Length | |
inch | mm | mm |
1/2 | DN15 | 200 |
3/4 | DN20 | 200 |
1 | DN25 | 200 |
1 1/4 | DN32 | 200 |
1 1/2 | DN40 | 200 |
2 | DN50 | 200 |
2 1/2 | DN65 | 245 |
3 | DN80 | 270 |
Datas above are only for reference, pls contact us for exact data!
Other kinds of rubber expansion joints
Our factory and workshop
Our packing details!
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!
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