Rubber Bellows
Single Sphere
Rubber Bellows “Single Sphere” type:
Moulded Rubber Bellows are designed to compensate for misalignment, neutralise movement and reduce noise and vibration in pipelines. They effectively dampen the transmission of sound and vibration from plant items in building service installations and can be used for many applications including water, oils, chemicals, gases and in the food industry depending upon the grade of rubber employed. (Please refer to the charts below and ISL technical for further advice).
They are available from 25mm to 600mm n.b., (1” to 24” n.b.), and generically come complete with zinc plated carbon steel swivel backing flanges. They can be drilled to suit any table or special drillings can be supplied both tied and untied.
Standard Construction:
- Textile cord reinforced rubber body and collar
- Single arch
- Zinc plated carbon steel flanges
Supply options:
- Different lengths
- Different grades of rubber selected for specific application / operating conditions**
- Tied or Untied flanges
- Flanges drilled to any table / special requirement
- Carbon steel or stainless steel flanges
- Vacuum rings fitted when used on negative pressure applications
Material Colour Chart:
| Colour | Materials | Primary Application | Op Temp (Max) |
| Red | EPDM | Hot water, heating & ventilation, weak acid/alkali | +90 |
| Double Red | EPDM | High temp hot water, heating & ventilation, weak acid/alkali | +120 |
| Yellow | Nitrile | Oil & Gas transportation, refineries | +80 |
| Green | Hypalon | Water, good chemical resistant qualities for acids | +90 |
| Purple | Viton | High temp applications, petroleum based product transportation | +180 |
| White | Food Grade Nitrile | Food stuffs, potable water | +80 |
| Blue | Butyl HT | High temperature | +130 |
Movement Data (Standard EPDM Construction)**
| Nominal Bore | Standard Length | Working Pressure | Axial Compression | Movements Elongation | Lateral(+/-) | Angular(+/-) |
| (mm) | (mm) | (Bar) | (mm) | (mm) | (mm) | (Deg) |
| 25 | 130 | 16 | 30 | 20 | 30 | 30 |
| 32 | 130 | 16 | 30 | 20 | 30 | 30 |
| 40 | 130 | 16 | 30 | 20 | 30 | 30 |
| 50 | 130 | 16 | 30 | 20 | 30 | 30 |
| 65 | 130 | 16 | 30 | 20 | 30 | 30 |
| 80 | 130 | 16 | 30 | 20 | 30 | 30 |
| 100 | 130 | 16 | 30 | 20 | 30 | 20 |
| 125 | 130 | 16 | 30 | 20 | 30 | 20 |
| 150 | 130 | 16 | 30 | 20 | 30 | 20 |
| 200 | 130 | 16 | 25 | 30 | 30 | 10 |
| 250 | 130 | 16 | 10 | 30 | 15 | 5 |
| 300 | 130 | 16 | 10 | 30 | 15 | 5 |
| 350 | 200 | 16 | 40 | 35 | 30 | 8 |
| 400 | 200 | 16 | 40 | 35 | 30 | 8 |
| 450 | 200 | 16 | 40 | 35 | 30 | 8 |
| 500 | 200 | 10 | 40 | 35 | 30 | 8 |
| 600 | 200 | 10 | 40 | 35 | 30 | 8 |
** Please contact ISL Technical department for data relating to other Bellows constructions