CIP Union Assembly with Blank Liner

A four-piece stainless steel CIP union closure assembly combining a hexagonal union nut, solid blank liner, welded male end, and union seal ring. Available in SS304 or SS316L across 25 mm to 152 mm nominal sizes for detachable line-end blanking.

Connection	Welded male end with threaded hexagonal union nut closure
Assembly Configuration	Four-piece closed-end union set: weld male, solid blank liner, seal ring, and hex nut
Interface Series	CIP series designation
Material Options	SS304 / AISI 304, SS316L / AISI 316L
Size Range	25 mm to 152 mm

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Closed-End Union Construction

This complete CIP union assembly replaces a standard through-bore liner with a solid blank liner disc to form a detachable dead-end pipe closure. The four-piece set comprises a butt-weld male end, a flat-faced solid blank liner, an elastomeric or polymer union gasket, and an externally hexagonal locking nut.

Material Grades and Surface Finish

Wetted components — the welded male end and solid blank liner — are offered in SS304 (AISI 304) or SS316L (AISI 316L) stainless steel with a specified surface finish of Ra < 0.8 μm. The external hexagonal nut provides six flat wrenching surfaces for spanner tightening without requiring slotted hook tools.

Hygienic Line Blanking Applications

Designed for dairy, food, brewery, beverage, pharmaceutical, and cosmetic piping networks, the assembly closes off manifold branches, future expansion ports, or drain stubs while allowing rapid disassembly for line inspection, seal replacement, and routine maintenance.

Sizing and Specification Notes

The series covers nominal tube sizes from 25 mm through 152 mm. Because the primary page does not publish a per-size dimensional chart, blank disc thickness, or gasket compound table, buyers should confirm exact weld-end tube dimensions, thread pitch, and seal material when ordering.