Malleable iron straight coupling (Socket) is straight-shaped pipe fitting with female threaded connection, and it is used to join two pipes.
Available size (Class 150)
| Size | A (mm) | Ref. No. |
|---|---|---|
| 1/2″ / DN15 / 21.3mm | 34.0 | M5501 (UL/FM) |
| 3/4″ / DN20 / 26.7mm | 38.6 | M5502 (UL/FM) |
| 1″ / DN25 / 33.4mm | 42.4 | M5503 (UL/FM) |
| 1-1/4″ / DN32 / 42.2mm | 49.0 | M5504 (UL/FM) |
| 1-1/2″ / DN40 / 48.3mm | 54.6 | M5505 (UL/FM) |
| 2″ / DN50 / 60.3mm | 64.3 | M5506 (UL/FM) |
| 2-1/2″ / DN65 / 73.0mm | 73.2 | M5507 (UL/FM) |
| 3″ / DN80 / 88.9mm | 80.8 | M5508 (UL/FM) |
| 4″ / DN100 / 114.3mm | 93.7 | M5509 (UL/FM) |
Available size (Class 300)
| Size | A (mm) | Ref. No. |
|---|---|---|
| 1/4″ / DN8 / 13.7mm | 35.1 | M5551 (ISO) |
| 3/8″ / DN10 / 17.1mm | 41.4 | M5552 (ISO) |
| 1/2″ / DN15 / 21.3mm | 47.8 | M5553 (ISO) |
| 3/4″ / DN20 / 26.7mm | 54.1 | M5554 (ISO) |
| 1″ / DN25 / 33.4mm | 60.5 | M5555 (ISO) |
| 1-1/4″ / DN32 / 42.2mm | 73.2 | M5556 (ISO) |
| 1-1/2″ / DN40 / 48.3mm | 73.2 | M5557 (ISO) |
| 2″ / DN50 / 60.3mm | 92.2 | M5558 (ISO) |
| 2-1/2″ / DN65 / 73.0mm | 104.9 | M5559 (ISO) |
| 3″ / DN80 / 88.9mm | 104.9 | M5560 (ISO) |
| 4″ / DN100 / 114.3mm | 117.0 | M5561 (ISO) |
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