477 Tamperproof Stopping Plug
Certification Details
Flameproof Exd IM2, Exd IIC Gb, Extb IIIC Db, 
IM2 II 2GD.
Baseefa Certificate No. Baseefa10ATEX0262X.
IECEx Certificate No. IECEx BAS 10.0120X.
GOST R certified.
Operating Temperature Range -60°C to +160°C.
Group I, II and III.
General Information
The 477 is fitted from the inside of the enclosure.
Manufactured in Brass, Nickel Plated Brass, Steel, Nickel Plated Steel and Stainless Steel. (Aluminium for Group II use only).
M16 to M75 as standard.
Other thread options available on request, including BSPP, PG, NPT and ET.
Metric entry threads are 1.5mm pitch as standard.
Suitable for use in Zone 1, Zone 2, Zone 21, Zone 22 and mining applications.
Construction and Test Standards: IEC/EN 60079-0, IEC/EN 60079-1 and IEC/EN 60079-31.
Ingress Protection: IP66.
| 477 STOPPING PLUGS SELECTION TABLE | ||
|---|---|---|
| Thread Size | Thread Size (NPT) * |
Allen Key |
| M16 | ½" # | 6/10 # |
| M20 | ¾" or ½" | 10 |
| M25 | 1" or ¾" | 10 |
| M32 | 1¼" or 1" | 10 |
| M40 | 1½" or 1¼" | 10 |
| M50 | 2" or 1½" | 10 |
| M63 | 2½" or 2" | 10 |
| M75 | 3" or 2½" | 10 |
| All dimensions in millimetres (except * where dimensions are in inches). # Smaller size if for M16 only. |
||
Ordering Information
Stopping Plug Type/Thread Size/Material/Finish
e.g.477/M32/Brass/Nickel Plated
