475 And 477 Flameproof Stopping Plugs (Group 1 Mining)
Application
To close unused Cable Gland entries and maintain the flameproof integrity of the equipment.
Materials & Finishes
475 and 477 Stopping Plugs are manufactured as standard in Brass.
Technical Data
Flameproof EExde I 
I M2 IP66.
Certificate No. SIRA 06 ATEX 1240U
Suitable for use in Mines.
The 475 is tightened from the outside of the Enclosure.
The 477 is tightened from the inside of the Enclosure.
| M475 And M477 STOPPING PLUGS | ||
|---|---|---|
| Thread Size | Hexagon Key Across Flats ‘V’ |
|
| Metric x 1.5p |
NPT * |
|
| M20 | ½" | 10.0 |
| M25 | ¾" | 10.0 |
| M32 | 1" | 14.0 |
| M40 | 1¼" | 19.0 |
| M50 | 1½" | 19.0 |
| M63 | 2½" or 2" | 19.0 |
| M75 | 2½" | 19.0 |
| All dimensions in millimetres (except * where dimensions are in inches) | ||
Stopping Plugs Ordering Example
Stopping Plug Type/Thread
e.g. 475/M32
