475 And 477 Flameproof Stopping Plugs
Application
To close unused cable gland entries and maintain the flameproof integrity of the equipment.
Materials & Finishes
475 and 477 Stopping Plugs are manufactured in Brass (standard), Nickel Plated Brass or 316 Stainless Steel.
Technical Data
Flameproof Exd & Increased Safety Exe 
II 2 GD IP66.
Certificate No. SIRA 06 ATEX 1240U
Construction and Test Standards: IEC/EN 60079-0, IEC/EN 60079-1 and IEC/EN 60079-7.
Ingress Protection: IP66 with suitable thread sealant in threaded entries only.
Operating Temperature Range: -60°C to +80°C.
Alternative certification options available: 
GOST R-Exe IIU
The 475 is fitted from the outside of the enclosure.
The 477 is fitted from the inside of the enclosure.
| 475 and 477 STOPPING PLUGS SELECTION TABLE | |||
|---|---|---|---|
| Thread Size | Hexagon Key Across Flats ‘V’ |
||
| Metric x 1.5p |
NPT * |
||
| Std. | Option | ||
| M20 | ¾" | ½" | 10.0 |
| M25 | 1" | ¾" | 10.0 |
| M32 | 1¼ | 1" | 10.0 |
| M40 | 1½" | 1¼" | 10.0 |
| M50 | 2" | 1½" | 10.0 |
| M63 | 2½" | 2" | 10.0 |
| M75 | 3" | 2½" | 10.0 |
| All dimensions in millimetres (except * where dimensions are in inches) | |||
Ordering Information
Stopping Plug Type/Thread Size
e.g.475/M32
