Rubber Expansion Joint Concentric Reducing REJ500
REJ500 is a concentric reducing rubber expansion joint for connecting pipes of different diameters while absorbing vibration, noise, and pipeline movement.
Movement Types
- Compression
- Elongation
- Transverse deflection
- Angular deflection
Main Connection Dimensions
| DN x DN (mm) | Length (mm) | Axial Extension (mm) | Axial Compression (mm) | Horizontal Movement (mm) | Deflection Angle |
|---|---|---|---|---|---|
| 32×25 | 115 | 20 | 30 | 45 | 35 degrees |
| 40×25 | 115 | 20 | 30 | 45 | 35 degrees |
| 40×32 | 115 | 20 | 30 | 45 | 35 degrees |
| 50×32 | 180 | 20 | 30 | 45 | 35 degrees |
| 50×40 | 180 | 20 | 30 | 45 | 35 degrees |
| 65×32 | 180 | 20 | 30 | 45 | 35 degrees |
| 65×50 | 180 | 20 | 30 | 45 | 35 degrees |
| 80×40 | 180 | 20 | 30 | 45 | 35 degrees |
| 80×65 | 180 | 20 | 30 | 45 | 35 degrees |
| 100×40 | 180 | 22 | 30 | 40 | 35 degrees |
| 100×80 | 180 | 22 | 30 | 40 | 35 degrees |
| 125×50 | 180 | 22 | 30 | 40 | 35 degrees |
| 125×100 | 200 | 22 | 30 | 40 | 35 degrees |
| 150×50 | 200 | 22 | 30 | 40 | 35 degrees |
| 150×125 | 200 | 25 | 35 | 40 | 30 degrees |
| 200×80 | 200 | 25 | 35 | 40 | 30 degrees |
| 200×150 | 200 | 25 | 35 | 40 | 30 degrees |
| 250×100 | 220 | 25 | 35 | 40 | 30 degrees |
| 300×250 | 220 | 25 | 35 | 40 | 30 degrees |
| 350×300 | 240 | 25 | 35 | 35 | 30 degrees |
| 400×350 | 240 | 25 | 38 | 35 | 30 degrees |
| 500×300 | 240 | 28 | 38 | 35 | 26 degrees |
| 500×400 | 240 | 28 | 38 | 35 | 26 degrees |
| 600×400 | 240 | 28 | 38 | 35 | 26 degrees |
Material Structure Diagram
Materials
| No. | Part | Material |
|---|---|---|
| 1 | Outer / inner rubber | NR, EPDM, NBR, FKM, Neoprene etc. |
| 2 | Frame | Nylon cord fabric |
| 3 | Pressurized ring | Steel wire strand |
| 4 | Flange | Carbon steel galvanized, paint; ductile iron; stainless steel etc. |
Notes
- Special size and length can be customized for production.
- Higher temperatures affect movement and pressure. Rated values should be reduced accordingly as temperature increases.
- Pressures shown are recommended operating values; test pressure is 1.5 times operating pressure.
Product Details
| Product Type | Concentric reducing rubber expansion joint for pipe size transition and movement compensation |
|---|---|
| Main Materials | Rubber body with reinforced structure and metal connection parts according to product type |
| Connection | Flange, threaded union, clamp or reducing connection according to the selected REJ model |
| Function | Absorbs vibration, reduces noise, compensates movement and helps protect connected pipework |
| Applications | Water supply, HVAC, pump connection, industrial piping and general pipeline systems |
| Ordering Note | Confirm nominal diameter, pressure, connection type, rubber material and flange/drilling standard when sending an inquiry |
