How To Order AccessoriesHow To Order >

To determine ordering reference please select from the tables below in the following order:

Product Type
Form of Protection
Thread Form
Thread Size
Thread Form (if applicable)
Thread Size (if applicable)
Material

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.

Below Example:

737DRT3T25

737 Adapter – Globally Certified – 1” (M) x ¾” (F) – Nickel Plated Brass complete with O Ring face seal.

View our range of Thread Conversions & Accessories products here ->

To determine ordering reference please select from the tables below in the following order: Product Type - Form of Protection - Option (if required) - Thread Form - Thread Size - Thread From (if applicable) - Thread Size (if applicable) - Material
Product Type	Form of Protection	Options	Male Thread Form	Male Thread Size	Female Thread Form	Female Thread Size	Material
From Product Page	From Table A Below	From Table B Below	From Table C Below	From Table D Below	From Table C Below	From Table D Below	From Table E Below
737	E	R	M	2	M	2	5

TABLE A

Code	Form of Protection
D	Group II Globally Certified Ex d / AEx d & Ex e / AEx e
E	Group II Increased Safety Ex e / AEx e
G	General Purpose/Industrial
M	Group I Mining

TABLE B

Code	Options
A	Type A – Externally secured non tamper-proof Ex d Stopper Plug or Type A – Insulated Adaptor*
B	Type B – Internally secured tamper-proof Ex d Stopper Plug or Type B – Insulated Adaptor*
R	Optional equipment interface 'O' ring seal

TABLE C

Code	Thread Form
M	Metric
N	NPSM
T	NPT
P	PG
B	BSPP
I	Imperial (E.T.)
S	BSPT

TABLE D

Code	Thread Size
Code	Metric "M"	NPSM "N"	NPT "T"	PG "P"	BSP "B"	Imperial "I"	BSP "S"
1A	-	-	3⁄8"	7	-	1⁄2"	-
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"

Other variations available upon request

Nominal dimensions shown in this table may vary due to material availability. All dimensions shown are in inches unless otherwise stated. Within the parameters of its Explosive Atmosphere certification, CMP Products Texas Inc. 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

**When ordered with the integral 'O' ring seal the across flats dimension shown may increase to accommodate the 'O' ring.

TABLE E

Code	Material
-	Brass
1	Aluminium
2	Nylon
3	Mild Steel
4	Stainless Steel 316
5	Nickel Plated Brass

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