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RJT Unions BS 4825 Part 5

RJT, IDF, SMS Screwed Fittings, Weld Fittings & Accessories

RJT Unions BS 4825 Part 5

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The RJT (Ring Type Joint) union is used extensively throughout the dairy, brewing and beverage industries.  Originally introduced under the BSS 1864 Standard for manual cleaning, this hexagonal screwed union utilises an O ring seal and is now covered by the standard BS 4825 Part 5. The wetted parts are supplied in 316 stainless steel while the nuts in 304 SS. The fitting is widely used throughout the UK and Europe and is useful in systems where regular dismantling is required.  The RJT union is particularly forgiving when taking up tube misalignment on long lengths.

RJT size range:  1” to 4”

316 SS wetted parts and 304SS nuts


The SRJT Union was developed for large bore tubes and although based on the RJT fitting, the seal is flush fittings and produces a crevice free joint.


SRJT size range:  4” to 6”

Related Standards
BSS 1864
BS 4825 Part 5
BS 4825 Part 2
BS 4825 Part 1


Conical Strainers
RJT Spanner
Blank Nuts and Chains
Pipe Clips and U Bolts
Nitrile, EPDM, Viton and Silicone Seals