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1" NPT to PG13.5 Thread Reducer: 316 Stainless Steel (ATEX)
Part Number RD-U-3-0-31-82
1" NPT to PG13.5 Thread Reducer: 316 Stainless Steel (ATEX)
1" NPT (male) to PG13.5 (female) Thread Reducer: 316 Stainless Steel
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Male x Female Thread Reducer: Exd/Exe, ATEX, IECEx, GOST-R, CSA

 RD-U series of Reducers provide a method of matching electrical threadforms on hazardous area approved equipment.  Ex approval maintains hazardous location certification and the overall integrity of the installation.

Manufactured from hexagon material to facilitate an easy installation, this Reducer will convert holes which fit size 1" NPT male threads to a female PG13.5 threaded hub.

The RD-U series of Reducers are certified to protection concepts Exd "Flameproof" and Exe "Increased Safety" for use in Zone 1 and Zone 2 applications.  Approved to the latest international standards, ATEX (CENELEC), IECEx and GOST-R hazardous area certificates are available.  Additionally, CSA approval certificates can be supplied to cover use in North American and Canadian Class I, Division 1 and Class I, Zone 1 applications.

While designed for use within the hazardous locations present in oil, gas and petrochemical installations, Redapt's Thread Reducers are also commonly used in Industrial & Commercial applications providing a quick and easy solution when connecting to international components or machinery.

Technical Data Table:

Protection Method
Exd Flameproof / Exe Increased Safety
Ingress Protection Maintained IP66 / IP67 / IP68 to a depth of 2 meters
CSA Enclosure Type (NEMA) 4X 6P
Impact Resistance
20 Nm
Limiting Temperature Range
-50C to 180C, Max Temp limited to 150C for Group I applications
316 Stainless Steel
O-Ring Material
None: Male thread is tapered.
Thread sealant should be used to maintain the desired IP rating.
Standards Approved To
IEC 60079-0, IEC 60079-1, IEC 60079-7, IEC 61241-0, IEC 61241-1
I M2, II 2 GD, Ex d I/IIC Mb Gb, Ex e I/IIC Mb Gb, Ex tb IIIC Db, IP6X
IECEx Approval
IECEx SIR 12.0016X
Ex d I/IIC Mb/Gb, Ex e I/IIC Mb/Gb, Ex tb IIIC Db, IP6X
GOST-R Approval

RU ?-GB.??06.?00106  Russian
RU ?-GB.??06.?00106  English

RU ?-GB.??06.?00106 Annex Document  English

CSA Approval
1248014 (LR 106084-2)
Ex de I & IIC IP66/67/68 Class I Zone 1 & 2 Groups A, B, C & D.
Class I, Division 1 & 2; Groups A, B, C & D; Class II, Groups E, F & G; 
Class III; CSA Enclosure Type 4x/6P
Installation Instructions


Product Datasheet

Data Sheet - Metallic Adapters & Reducers

Looking for a different size or material?  Other Ex fittings?
Please check out our line of 
Explosion Proof Fittings or call (888) 835-0868
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