DIN 14S Short Weld-End Union Liner

Compact Short-Neck Liner Design

The DIN 14S short weld-end liner combines a compact butt-weld neck with a stepped DIN union shoulder and front sealing face. Its shortened axial length reduces installation space compared with the standard DIN 14 long welding liner while differing in tube attachment from the DIN 14R expanding liner.

Stainless Steel Grades and Bore Finish

Supplied in SS304 (AISI 304) or SS316L (AISI 316L) stainless steel, the liner is specified with an internal surface roughness of Ra < 0.8 μm. The smooth through bore aligns with metric or DIN process tubing when welded into sanitary pipelines.

Drawing Pairing and Range Differences

The primary series specification embeds two drawings: a DIN Short welding liner chart and a companion DIN Short welding male chart. Only the short welding liner chart applies to this component. Additionally, while the page text states DN15 to DN100, the embedded drawing tabulates rows from DN10 through DN150.

Application and Mating Selection

Used in dairy, food, brewery, beverage, pharmaceutical, and cosmetic piping, demountable DIN unions allow quick joint opening for seal replacement. Confirm whether your fabrication requires the short DIN 14S neck or the long DIN 14 neck, and verify tube diameter, wall thickness, and shoulder dimensions before ordering.