SMS-14S Sanitary Short Welding Union Liner in SS304 / SS316L

Swedish Manufacturing Standard SMS-14S sanitary short welding union liner machined in SS304 or SS316L for compact SMS pipe unions from 25 mm through 101.6 mm (25–102 mm). Features a low-profile axial thickness F (7.5 mm to 12 mm) for tight installation envelopes.

Material options	SS304, SS316L
Size range	25~102mm
Interface series	SMS
Connection	Union (Short Welding Liner)
Shape	Round

Size

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Component Role & Compact Short-Liner Geometry

The SMS-14S short welding union liner provides a space-saving butt-weld collar for Swedish Manufacturing Standard (SMS) hygienic pipe unions where axial installation length is restricted. Instead of the extended weld neck of the standard SMS-14 liner, the SMS-14S uses a compact collar profile (dimension F on the source drawing) that seats directly inside the rear shoulder of an SMS-13R union nut.

Material Grades, Surface Finish & Dimensional Scope

Manufactured in SS304 and SS316L stainless steel with a surface finish rated at Ra < 0.8 um in the series specification schedule, the SMS short welding liner drawing tabulates six nominal sizes: 25.0, 38.0, 51.0, 63.5, 76.1, and 101.6. Across this schedule, bore ID A spans 22.5 mm to 97.6 mm, tube OD B spans 25 mm to 101.6 mm, axial thickness F progresses from 7.5 mm (25.0) to 9 mm (38.0–51.0), 10 mm (63.5–76.1), and 12 mm (101.6), and outer shoulder OD C spans 35.5 mm to 127 mm.

Installation & Ordering Notes

Note that the SMS-14S drawing uses column header F for axial thickness (7.5–12 mm) and C for outer shoulder diameter (35.5–127 mm), and lists 127 mm shoulder OD at 101.6 mm. Confirm whether your piping layout requires the compact SMS-14S short liner or the extended SMS-14 long liner before ordering.