Alchem Process Ltd
Unit 4 Church Road Ind Estate,
Gorslas, Llanelli, Carmarthenshire,
SA14 7NN.
Tel: 00 44 (0) 1269 841 324

DIN 11851 & 11887 Unions

Hygienic Fittings & Unions

DIN 11851 & 11887 Unions

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The DIN 11851 union is widely used throughout Europe and incorporates a round slotted nut and a flush fitting lipped seal, as standard.  The union is manufactured to suit Imperial tube sizes from 1” to 4” and also to suit DIN 11850 metric tube from 10mm to 150mm.  Two seals designs are offered for the fitting, namely the flush fitting and crevice free lipped seal and also the cheaper D section seal.  The standard seal material is Nitrile/Perbunan and is generally blue or grey in colour, while alternatives in Viton®, EPDM and translucent silicone are also offered.  The male features an inverted cone face that carries the seal, while the liner is similarly conical in section and


Size Ranges:
1” to 4”
Metric: 10mm to 150mm


Related standards
DIN 11850
DIN 11864-1
DIN 11864-2
DIN 11864-3
DIN 11866
DIN 11865


Blank Nuts and Chains
Cone Strainers
EPDM, Nitrile, Viton® and PTFE
C Spanner
Pipe Clips and U Bolts