BSM Unions & Components
British Standard Milk (BSM) and Ring Joint Type (RJT, BS 4825-5) hygienic union assemblies. Includes robust hexagonal union nuts, weld liners, male ends, and specialized stepped profile joint rings for brewing, dairy, and beverage industries.
RJT Male × Liner with Hex Nut 90° Short-Radius Elbow (STBMPWL90)
A 316 stainless steel 90-degree short-radius (1.5×D) bend factory pre-welded with an RJT threaded male end on one leg and an RJT liner with captive hex nut on the other. Built for demountable hygienic RJT union manifolds from 1-1/2" to 4".
316 Stainless Steel Pre-Welded RJT Concentric Reducer (Male Small End × Liner & Hex Nut Large End)
A 316 stainless steel concentric reducer pre-welded with an RJT threaded male part at the smaller end and an RJT weld liner with captive hex nut at the larger end.
BSPT Male to RJT Male Adapter
A one-piece grade 316 stainless steel adapter connecting a tapered BSP male pipe thread (BSPT) to an RJT male union thread end. Machined wrench flats between the two threaded ends assist installation across nine listed sizes from 1/2 to 4 inches.
BSPT Male to RJT Female Adapter
A threaded-to-union transition adapter combining a tapered BSP male pipe thread with an RJT female liner and hexagonal union nut. The source series specifies a grade 316 body with a standard grade 304 hex nut across nine size pairings from 1/2 to 4 inches.
BSPP Female to RJT Male Adapter
A one-piece grade 316 adapter connecting a female parallel BSP (BSPP) socket to an RJT male union end. External wrench flats assist assembly, with six listed size pairings from 1 to 4 inches.
RJT Male Hose Joiner with Handle
A grade 316 stainless steel twin-male RJT spool with a central positioning handle for coupling two RJT female hose assemblies. Listed across 2-inch to 4-inch nominal sizes with a 200 mm body length.
RJT Male Single-Swaged Hosetail
A grade 304 stainless steel hose tail combining a single circumferential swaged bead on the hose shank with a pre-welded RJT male union part. Listed across six nominal sizes from 1 inch to 4 inches.
RJT Liner Single-Swaged Hosetail
A grade 304 stainless steel hose tail combining a single circumferential swaged bead on the hose shank with a pre-welded RJT union liner. Listed across six nominal sizes from 1 inch to 4 inches with a 120 mm overall length.
RJT Union Hose Tail — Double-Swaged, 304 Stainless Steel
An RJT union hose tail combining a pre-welded RJT liner end with a double-swaged (twin-bead) straight hose shank in 304 stainless steel. It connects flexible process hose directly to an RJT male threaded union port using a standard RJT union nut and O-ring seal. Available in 2 inch (50.8 mm) and 3 inch (76.2 mm) nominal sizes with a 120 mm overall length.
RJT Male to Tri-Clamp Adapter
A one-piece grade 316 stainless steel transition adapter combining an RJT male union end with a Tri-Clamp ferrule. Offered across six nominal sizes from 1 to 4 inches, it connects RJT union pipework directly to clamp fittings without an intermediate fabrication weld.
RJT Pre-Welded Equal Tee (2 Male Ends × 1 Liner & Hex Nut)
Pre-welded sanitary RJT equal tee in 316 stainless steel featuring two RJT male threaded ends, one weld liner with captive hex nut, 1.6 mm wall thickness, and a 320-grit finish.
RJT Sanitary Union EPDM O-Ring Seal
A circular-section EPDM O-ring seal designed for the recessed groove of RJT (Ring Joint Type) sanitary pipe unions. Listed across eight nominal sizes from 1" (25.4 mm) to 6" (152.4 mm) with a uniform 6.6 mm cross-section on dimensioned sizes.
BSM Flat-Faced EPDM Union Seal
A molded EPDM union gasket with a stepped flat-faced profile designed for BSM flat-faced sanitary pipe unions from 1" to 4" (25.4 mm to 101.6 mm). Rated on the source datasheet for temperatures up to 120 °C.
BSM Stepped EPDM Union Seal Ring
An EPDM union seal ring with a stepped cross-section designed to seat inside mating BSM sanitary union ferrules. Listed across a DN20 to DN100 series size range for hygienic pipeline joints.
RJT Union Seals – EPDM, FKM, PTFE & NBR
Sanitary union seals for RJT couplings, offered in EPDM, FKM, PTFE and NBR material options. The series includes stepped profiles that seat in the union joint, as well as flat-section gaskets recorded specifically for ½-inch and ¾-inch NBR sizes.
Flat-Faced Hex-Nut Union Assembly
A flat-faced hex-nut union with welded end pieces and a replaceable seal for detachable dairy, food and beverage process-pipe connections.
BSM Stepped-Liner Hex-Nut Sanitary Union Assembly
Sanitary stainless steel BSM union assembly in AISI 304 and AISI 316L with a six-flat hexagonal union nut, stepped weld liner, threaded weld male part, and elastomeric O-ring seal across 1" to 4" sizes with Ra < 0.8 μm finish.
BSM Butt-Weld Sanitary Union Liner
Sanitary stainless steel BSM butt-weld union liner in SS304 or SS316L with a stepped retaining collar and bevel/seat nose across 1"–4" tube sizes (and 152.4 mm drawing row, flange OD D = 41.3–168.3 mm, height E = 19–27 mm).
RJT Blind Hexagonal Union Nut with Retaining Chain in 304 Stainless Steel
Ring Joint Type (RJT) blind hexagonal union nut in 304 stainless steel with a closed end face and retaining chain for 1" through 4" RJT pipe unions. Threads onto an RJT male part to blank off a pipeline end without a separate liner.
BSM & RJT Union Blank Cap
A removable blank cap for closing a BSM or RJT union connection in process pipework. Choose the union profile first, then compare the separately listed BSM and RJT dimensions and material options.
RJT Blind Slotted Round Union Nut with Retaining Chain in 304 Stainless Steel
Ring Joint Type (RJT) blind slotted round union nut in 304 stainless steel with a closed end face, external C-spanner slots, and a retaining chain for 1" through 4" RJT pipe unions. Caps off an RJT male part directly.
RJT Slotted Round Union Nut (304 Stainless Steel, 1"–6")
An individual 304 stainless steel RJT round slotted union nut covering nine nominal sizes from 1" (25 mm) to 6" (150 mm). Designed as an alternative to the standard hexagonal RJT nut, its slotted outer ring tightens with a C-spanner to draw an RJT weld liner and male part together.
BSM Whitworth-Threaded Hexagonal Sanitary Union Nut
Sanitary stainless steel BSM hexagonal union nut in SS304 or SS316L with internal Whitworth threads (8 TPI on 25.4–38.1 mm, 6 TPI on 50.8–152.4 mm) and rear retaining bore across 1"–4" (and 152.4 mm drawing row).
BSM Butt-Weld Whitworth-Threaded Sanitary Union Male Part
Sanitary stainless steel BSM butt-weld union male part in AISI 304 and AISI 316L (drawing also notes CF8M) with external Whitworth threads (45.7×8TPI to 174.3×6TPI WHIT) and an annular seal groove across 1"–4" (and 152.4 mm row).
RJT-13H Sanitary Hexagonal Union Nut with Whitworth Thread in SS304 / SS316L
Ring Joint Type RJT-13H sanitary hexagonal union nut in SS304 or SS316L with internal Whitworth threads for 1" through 4" RJT hygienic pipe unions. Six-flat exterior allows spanner tightening over an RJT-14 liner and RJT-15 male part.
RJT-14 Sanitary Welding Union Liner in SS304 / SS316L
Ring Joint Type RJT-14 sanitary welding union liner machined in SS304 or SS316L for 1" through 4" RJT hygienic pipe unions. Butt-welds to inch OD tubing and presents a conical seating face and retention shoulder for an RJT-13H hex nut and RJT-15 male part.
RJT-15 Sanitary Welding Union Male End with Whitworth Thread in SS304 / SS316L
Ring Joint Type RJT-15 sanitary welding union male part in SS304 or SS316L with external Whitworth threads and an O-ring seating groove for 1" through 4" RJT pipe unions. Butt-welds to inch OD tubing and mates with an RJT-13H hex nut and RJT-14 liner.
RJT Union Blank
A grade 304 dished blank for closing a matching RJT union, with eleven sizes from 1/2 to 6 inches. Select separately from BSM blanks.
BSM Grade 304 Slotted Round Union Nut
Grade 304 stainless steel BSM slotted round union nut designed for C-spanner engagement across 1" (25.4 mm) to 4" (101.6 mm) tube sizes. Features a uniform 22.2 mm axial length (A) and outer diameters (B) from 52.5 mm to 128 mm.
RJT Union Blank with Centered 15NB / 20NB Female BSP Socket (Water Pusher) in 304 Stainless Steel
Ring Joint Type (RJT) union blank cap in 304 stainless steel welded with a centered 15NB (1/2") or 20NB (3/4") half-threaded female BSP socket. Designed as a water pusher for connecting utility hoses, gauges, or purge lines into 1" through 4" RJT unions.
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