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.
Material options | SS304, SS316L |
|---|---|
Size range | 1"~4" |
Interface series | RJT |
Connection | Union (Welding Liner) |
Shape | Round |
Size
Product overview
Component Role & RJT Liner Geometry
The RJT-14 welding union liner is the plain butt-weld half of a Ring Joint Type (RJT / BS 4825-5) sanitary pipe union. Its rear neck welds to inch-OD stainless steel tubing, while its front flange provides a rear thrust shoulder for an RJT-13H hex nut (or RJT slotted nut) and an angled face that compresses the O-section RJT union ring into the groove of a mating RJT-15 male part.
Material Grades, Surface Finish & Dual-Source Scope
Manufactured in SS304 and SS316L stainless steel with a surface finish rated at Ra < 0.8 um in the specification table, the RJT-14 liner covers six nominal sizes from 1.0" through 4.0" (1.0", 1.5", 2.0", 2.5", 3.0", and 4.0"). Across the dimensional drawing table, bore ID A spans 22.2 mm to 97.6 mm, weld-end OD B spans 25.4 mm to 101.6 mm, outer flange diameter C spans 41.3 mm to 117.5 mm, and axial length H is a uniform 19.5 mm. Secondary datasheet records (316L grade, codes RJTL25 to RJTL100) corroborate the 1"–4" series.
Assembly & Ordering Notes
Slide the mating RJT union nut onto the tube before butt-welding the RJT-14 liner in place. Specify nominal tube size (1.0" to 4.0") and stainless steel grade (SS304 or SS316L) when ordering replacement liners or complete RJT union assemblies.
Technical specifications
Product specifications
- Media / applications
- Water
- Surface finish
- Ra<0.8um
Dimensional reference · Welding Liner (RJT-14) JOU-RJTHL
RJT14 union liner dimensional reference; confirm tube-end and sealing face dimensions per nominal size.
| Size | A | B | C | H |
|---|---|---|---|---|
| 1.0" | 22.2 | 25.4 | 41.3 | 19.5 |
| 1.5" | 34.9 | 38.1 | 54 | 19.5 |
| 2.0" | 47.6 | 50.8 | 66.7 | 19.5 |
| 2.5" | 60.3 | 63.5 | 79.4 | 19.5 |
| 3.0" | 73.0 | 76.2 | 92.1 | 19.5 |
| 4.0" | 97.6 | 101.6 | 117.5 | 19.5 |
Product parameters
RJT14 union liner technical specifications; verify configuration against operating requirements.
| Parameter | Value |
|---|---|
| Material: | AISI304, AISI316L |
| Size: | 1"- 4" |
| Finish: | Ra<0.8um |
| Connection: | Union |
| Standard: | RJT |
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