DIN 14B Union Blank Liner

Solid Blank Liner Construction

The DIN 14B blank liner is a solid circular stainless steel blind insert machined with a stepped outer rim and a flat sealing face. Instead of welding to a pipe, it sits inside a DIN round union nut and presses against the seal in a mating union male end to dead-end the line.

Material Grades and Surface Finish

Offered in SS304 (AISI 304) and SS316L (AISI 316L) stainless steel, the blank liner specifies an Ra < 0.8 μm surface finish across its wetted face. Note that while the header parameter block prints Clamp under Connection, the component is a stepped DIN union blank liner retained by a threaded union nut.

Text Range vs. Dimensional Chart Scope

The series specification and parameter table list a nominal size span of DN15 to DN200, whereas the embedded DIN 14B dimensional drawing tabulates outer diameter A, step diameter B, and thickness C from DN10 through DN150. For DN200 applications, exact blank dimensions must be confirmed separately.

Hygienic Blanking and Maintenance Use

Used in dairy, food, brewery, beverage, pharmaceutical, and cosmetic piping, DIN 14B blank liners cap unused manifold outlets, sampling ports, or drain connections while permitting tool-assisted disassembly for cleaning and seal replacement.