ORDERING DEFINITIONS (HOW TO ORDER)
When selecting and installing certified electrical equipment and components in potentially explosive atmospheres, it is the users responsibility to ensure that the local industry codes of practice are observed and followed, for example EN 60079-14, IEC 60079-14, or NFPA 70 / NEC 500.
KEY TO ORDERING REFERENCES FOR ADAPTORS, REDUCERS & STOPPER PLUGS
HOW TO ORDER - To determine ordering reference please select from the tables below in the following fashion :- Form of protection - Option (if required) - Thread Form - Thread Size - Material
Stopper Plug Options
| Description | Allen key recess |
Metallic | Non-Metallic | |||
|---|---|---|---|---|---|---|
| Ex 'd' | Ex 'e' | Industrial | Ex 'e' | Industrial | ||
| 747 Recessed Non-Tamper Proof Type 'A' |
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| 747 Recessed Tamper Proof Type 'B' |
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| 757 Hexagon Head |
x | |
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| 757 Hexagon Head c/w 'O' ring seal (*) |
x | |
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| 767 Dome Head |
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| 767 Dome Head c/w 'O' ring seal (*) |
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| Note * This options is available only with a parallel thread Stopper Plugs | ||||||
Table A
| Code | Form of Protection |
|---|---|
| D | Dual Certified Ex "d" / Ex "e" |
| E | Increased Safety Ex "e" |
| F | Flameproof Ex "d" |
| G | General Purpose Industrial |
| M | Group 1 Mining (Ex "d") |
| U | UL Listed - Hazardous Locations |
| C | CSA Approved - Ex "d" / Ex "e" |
Table B
| Code | Options |
|---|---|
| A | Externally Secured - Non Tamper Proof Ex "d" Stopper Plug (Type A) |
| B | Internally Secured - Tamper Proof Ex "d" Stopper Plug (Type B) |
| R | Optional "O" Ring |
Table C
| Code | Thread Form |
|---|---|
| M | Metric |
| N | NPSM |
| T | NOT |
| P | PG |
| B | BSPP |
| I | E.T. (Imperial) |
| S | BSPT |
Table D
| Code | Thread Size | ||||||
|---|---|---|---|---|---|---|---|
| Metric "M" | NPSM"N" | NPT"T" | PG"P" | BSP"B" | Imperial "I" | BSP"S" | |
| 1A | - | - | - | 7 | - | - | - |
| 1 | 16 | 1/2" | 1/2" | 9 | 1/2" | 5/8" | 1/2" |
| 2 | 20 | 3/4" | 3/4" | 11 | 3/4" | 3/4" | 3/4" |
| 3 | 25 | 1" | 1" | 13.5 | 1" | 1" | 1" |
| 4 | 32 | 1-1/4" | 1-1/4" | 16 | 1-1/4" | 1-1/4" | 1-1/4" |
| 5 | 40 | 1-1/2" | 1-1/2" | 21 | 1-1/2" | 1-1/2" | 1-1/2" |
| 6 | 50 | 2" | 2" | 29 | 2" | 2" | 2" |
| 7 | 63 | 2-1/2" | 2-1/2" | 36 | 2-1/2" | 2-1/2" | 2-1/2" |
| 8 | 75 | 3" | 3" | 42 | 3" | 3" | 3" |
| 9 | 90 | 3-1/2" | 3-1/2" | 48 | 3-1/2" | 3-1/2" | 3-1/2" |
| 10 | 100 | 4" | 4" | - | 4" | 4" | 4" |
Table E
| Code | Material |
|---|---|
| - | Brass |
| 1 | Aluminium |
| 2 | Nylon |
| 4 | Stainless Steel |
| 5 | Nickel Plated Brass |
Other variations available on request
Notes: Nominal dimensions shown in this catalogue may vary due to material availability. All dimensions shown are in millimetres unless otherwise stated. Within the parameters of its hazardous area certification CMP products reserves the right to change the design and / or dimensions of any of the products illustrated without notice. For further information please contact CMP Products.
