1-1/4 in (32 mm) EPDM Rubber Bellow, Table E | RB32
Available
This AAP EPDM rubber bellow is drilled to Table E (manufacturer-stated). It is supplied in 16 sizes from 1-1/4 in (32 mm) to 24 in (600 mm).
A rubber bellow is a flexible joint moulded in a spherical shape from heat-resisting synthetic elastomer, with metal floating flanges. Installed in a piping system, it absorbs movement in three directions: axial (elongation and compression along the centre line), lateral (offset from the centre line) and angular (bending about the centre line).
The body is EPDM, rated -30 to +120 °C, with a nylon cord fabric lining and a hard steel wire frame. AAP lists EPDM as generally resistant to animal and vegetable oils, ozone, and strong and oxidising chemicals, and generally affected or attacked by mineral oils and solvents, and aromatic hydrocarbons. Applications listed by AAP: air, compressed air, water, sea water, hot water and weak acid.
Where this product is used
- Absorbing axial, lateral and angular pipe movement
- Flexible connections at pumps and other equipment
- Compressed air, water, sea water and hot water lines
- Weak acid duties, subject to the chemical resistance listed
Features
- 16 sizes from 1-1/4 in (32 mm) to 24 in (600 mm)
- EPDM body, -30 to +120 °C
- Flange drilling: AS2129 Table E (manufacturer-stated)
- Absorbs axial, lateral and angular movement, with 15° angular deflection on all sizes
- Bursting pressure 6,000 kPa and vacuum rating 86.7 kPa, per the manufacturer
- Moulded spherical body with nylon cord lining, steel wire frame and metal floating flanges
- EPDM resists animal and vegetable oils, ozone and strong oxidising chemicals
Key specifications
| Specification | Detail |
|---|---|
| Brand | AAP |
| Product | Rubber bellow (flexible rubber joint) |
| Rubber (manufacturer-stated) | Ethylene-propylene-diene terpolymer (EPDM), ASTM D1418-64 designation |
| Flange drilling (manufacturer-stated) | AS2129 Table E |
| Construction | Spherical moulded body in heat-resisting synthetic elastomer with a nylon cord fabric lining, a hard steel wire frame and metal floating flanges |
| Temperature range | -30 to +120 °C |
| Bursting pressure | 6,000 kPa |
| Vacuum rating | 86.7 kPa (listed by AAP as "vacuity") |
| Working pressure | 1,600 kPa for DN32 to DN300, 1,000 kPa for DN350 to DN450, 600 kPa above that (see table) |
| Movements absorbed | Axial compression and elongation, lateral displacement and angular deflection |
| Angular deflection | 15° on all sizes |
| Sizes | 1-1/4 in (32 mm) to 24 in (600 mm) (16 sizes) |
Options and part numbers
| Size | Part number | Length L (mm) | Axial compression (mm) | Axial elongation (mm) | Lateral displacement (mm) | Angular deflection | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 1-1/4 in (32 mm) | RB32 | 95 | 9 | 6 | 9 | 15° | 2.3 |
| 1-1/2 in (40 mm) | RB40 | 95 | 10 | 6 | 9 | 15° | 2.75 |
| 2 in (50 mm) | RB50 | 105 | 10 | 7 | 10 | 15° | 3 |
| 2-1/2 in (65 mm) | RB65 | 115 | 13 | 7 | 11 | 15° | 4.1 |
| 3 in (80 mm) | RB80 | 135 | 15 | 8 | 12 | 15° | 5.2 |
| 4 in (100 mm) | RB100 | 135 | 19 | 10 | 13 | 15° | 6 |
| 5 in (125 mm) | RB125 | 165 | 19 | 12 | 14 | 15° | 10.3 |
| 6 in (150 mm) | RB150 | 180 | 20 | 12 | 22 | 15° | 11.6 |
| 8 in (200 mm) | RB200 | 190 | 25 | 16 | 22 | 15° | 16 |
| 10 in (250 mm) | RB250 | 230 | 25 | 16 | 22 | 15° | 24 |
| 12 in (300 mm) | RB300 | 245 | 25 | 16 | 22 | 15° | 27 |
| 14 in (350 mm) | RB350 | 265 | 25 | 16 | 22 | 15° | 41 |
| 16 in (400 mm) | RB400 | 265 | 25 | 16 | 22 | 15° | 50 |
| 18 in (450 mm) | RB450 | 265 | 25 | 16 | 22 | 15° | - |
| 20 in (500 mm) | RB500 | 265 | 25 | 16 | 22 | 15° | 75 |
| 24 in (600 mm) | RB600 | 265 | 25 | 16 | 22 | 15° | 120 |
Selecting the right option
Match the flange drilling to the flanges on your pipework: this bellow is drilled to Table E (AS2129, manufacturer-stated). Check the movement you need to absorb against the table, because AAP lists each movement separately, and contact AIMS if the joint will see more than one movement at once. EPDM is not suited to mineral oils, solvents or aromatic hydrocarbons, so choose an NBR bellow for those duties. Working pressure steps down with size: 1,600 kPa up to DN300, 1,000 kPa for DN350 and DN400 and 600 kPa for DN500 and DN600. AAP lists DN450 under both the 1,000 kPa and 600 kPa ranges, so confirm the 18 in size with AIMS. If you are not sure what suits, contact AIMS with your pipe size, flange standard, fluid and temperature.
Related products
See also AAP EPDM Rubber Bellow, Table E x BS4504 PN16, AAP NBR Rubber Bellow, Table E, AAP EPDM Rubber Bellow, Table D, 10 in (250 mm), AAP NBR Rubber Bellow, ANSI B16.5 Class 150 and AAP Slip-On Plate Flange, AS2129 Table E.
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1-1/4"
Model Number: RB32
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1-1/2"
Model Number: RB40
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2"
Model Number: RB50
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2-1/2"
Model Number: RB65
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3"
Model Number: RB80
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4"
Model Number: RB100
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5"
Model Number: RB125
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6"
Model Number: RB150
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8"
Model Number: RB200
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10"
Model Number: RB250
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12"
Model Number: RB300
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14"
Model Number: RB350
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16"
Model Number: RB400
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18"
Model Number: RB450
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20"
Model Number: RB500
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24"
Model Number: RB600
