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Redapt Unions
Redapt UND1 Union
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Redapt Unions Redapt

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Exd Flameproof Unions (UF-D/UN-D Series)

POA excl. VAT

Redapt Unions Details

Redapt UN-D and UF-D Series of Unions provide a method of matching electrical threadforms on hazardous area approved equipment whilst ensuring the integrity and Ex approval of the installation is maintained. 

Manufactured as a three-piece assembly to facilitate easy in-line installation, they provide a running joint whilst eliminating exposed threads.

They can be manufactured with either the same connection thread or a differing size and or threadform to enable installation.

UN-D Series of unions provide a male to female threaded connection

UF-D Series of unions provide a female to female threaded connection.

Redapt Unions are designed for hazardous area applications and are certified to protection concepts Exd “Flameproof” for use in Zone 1 and Zone 2 applications.

Approved to the latest international standards unions can be supplied with ATEX, and GOST-R hazardous area certificates.

In addition CSA approval certificates can be supplied to cover use in North American and Canadian Class I Division 1 and Class I Zone 1 applications.


Technical Data Table

Protection MethodExd – Flameproof
Ingress Protection (IP) MaintainedIP66/IP68
Impact Resistance7Nm
Temperature -50°C to 180°C


Base materials


Brass, 316 stainless steel, aluminium, mild steel

Nickel, zinc, others on application  

ThreadformsISO Metric, NPT, PG, BSPP, BSPT, ET. 

Others on application

Standards Approved ToIEC 60079-0, IEC 60079-1, IEC 61241-0, IEC 61241-1

Ex approvals

ATEX Approval

GOST-R Approval

CSA Approval


RU С-GB.ГБ06.В00106 – Russian

RU С-GB.ГБ06.В00106 – English

RU С-GB.ГБ06.В00106 Annex document – English

1248014 (LR 106084)

Installation InstructionsEnglish
Product DatasheetUnions 
How To OrderPart Number System
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Redapt Unions