Product Description
The ERV Green rubber expansion joint is used for flexible connections in pipeline systems for chemicals, acids, alkalies, and chemically aggressive wastewater. The flanges of the ERV Green are rotating and standard available in DIN PN10 and PN16. The maximum working pressure is 16 bar or 10 bar for larger diameters. The operating temperature of this expansion joint ranges from -20° to 100 °C. Additionally, the ERV green can also be used for applications with oil-contaminated air with temperatures up to 90 °C.
CONSTRUCTION
- Durable seamless Hypalon (CSM) inner wall
- PA-textile reinforced bellows
- Hypalon (CSM) outer wall
- Electrically non-conductive
- Rotating flanges, galvanized steel
APPROVALS
Approved by DNV-GL
OPTIONS
- Most sizes available in different neutral lengths
- Flanges according to DIN PN6, PN25, PN40, ASA 50 lbs or BS10
- Flanges in stainless steel or bronze
- Tie rods
- PTFE lining
- Vacuum support rings
- Fire protection cover
| PART No. | INSIDE DIAMETER A (MM) | LENGTH B (MM) | WORKING PRESSURE (BAR) | FLANGE DIMENSIONS CLASS | OUTSIDE DIAMETER C (MM) | PITCH D (MM) | E x F (NUMBER x MM) |
| 300 044 025 | 25 | 130 | 16 | DIN PN10/16 | 115 | 85 | 4x14 |
| 300 044 032 | 32 | 130 | 16 | DIN PN10/16 | 140 | 100 | 4x18 |
| 300 044 040 | 40 | 130 | 16 | DIN PN10/16 | 150 | 110 | 4x18 |
| 300 044 050 | 50 | 130 | 16 | DIN PN10/16 | 165 | 125 | 4x18 |
| 300 044 065 | 65 | 130 | 16 | DIN PN10/16 | 185 | 145 | 4x18 |
| 300 044 080 | 80 | 130 | 16 | DIN PN10/16 | 200 | 160 | 8x18 |
| 300 044 100 | 100 | 130 | 16 | DIN PN10/16 | 220 | 180 | 8x18 |
| 300 044 125 | 125 | 130 | 16 | DIN PN10/16 | 250 | 210 | 8x18 |
| 300 044 150 | 150 | 130 | 16 | DIN PN10/16 | 285 | 240 | 8x22 |
| 300 044 201 | 200 | 130 | 10 | DIN PN10 | 340 | 295 | 8x22 |
| 300 044 200 | 200 | 130 | 16 | DIN PN16 | 340 | 295 | 12x22 |
| 300 044 251 | 250 | 130 | 10 | DIN PN10 | 395 | 350 | 12x22 |
| 300 044 250 | 250 | 130 | 16 | DIN PN16 | 405 | 355 | 12x26 |
| 300 044 301 | 300 | 130 | 10 | DIN PN10 | 445 | 400 | 12x22 |
| 300 044 300 | 300 | 130 | 16 | DIN PN16 | 460 | 410 | 12x26 |
| 300 044 351 | 350 | 200 | 10 | DIN PN10 | 505 | 460 | 16x22 |
| 300 044 401 | 400 | 200 | 10 | DIN PN10 | 565 | 515 | 16x26 |
| 300 044 501 | 500 | 200 | 10 | DIN PN10 | 670 | 620 | 20x26 |
| 300 044 601 | 600 | 200 | 10 | DIN PN10 | 780 | 725 | 20x30 |
Movement
The maximum movements for the ERV Green expansion joint stated below apply to the neutral length for operating temperatures up to +50 ºC and are not in combination (no lateral/axial movements simultaneously). The permissible movements are reduced by 25% for temperatures between +50 ºC and +70 ºC and by 40% for temperatures between +70 ºC and +90 ºC. The use of the optional vacuum ring leads to a reduction of 50%.
| Nominal diameter (mm) | Compression (mm) | Elongation (mm) | Lateral (mm) | Angular (degrees) |
| 25-80 | 30 | 20 | +/-30 | +/-30 |
| 100-150 | 30 | 20 | +/-30 | +/-20 |
| 200 | 25 | 30 | +/-30 | +/-10 |
| 250-300 | 10 | 30 | +/-15 | +/-5 |
| 350-600 | 40 | 35 | +/-30 | +/-8 |
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