Accessories · Accessory

Dairy coupling plug

Plug for dairy couplings to DIN 11851. The plug has a male round thread (DIN 405-1), so a union nut, such as on an MMS part, can be screwed onto it when the line is to be closed. The plug is made of stainless steel 1.4301 with a blue NBR seal. Available from DN 25 to DN 100.

Download datasheet (PDF)

DIN 11851 Stainless steel 1.4301 DN 25 to DN 100
  • Stainless steel
  • DIN 11851

Technical specifications

The product's key specifications are briefly summarised below.

Type Plug with male thread
Material Stainless steel 1.4301
Seal NBR, blue
Thread Dairy round thread to DIN 405-1, male
Standard DIN 11851
Manufacturer SKU 5544

Dimensions and ordering

The table shows the standard sizes of the plug.

Dimensions and article numbers for Dairy coupling plug
Nominal width
[mm]
Thread Weight
[kg/pc.]
Article no.
25Rd 52 x 1/6"—5544025000
32Rd 58 x 1/6"0.2535544032000
40Rd 65 x 1/6"0.2985544038000
50Rd 78 x 1/6"0.375544050000
65Rd 95 x 1/6"0.645544063000
80Rd 110 x 1/4"1.0345544075000
100Rd 130 x 1/4"1.2065544100000

Nominal width is the coupling's nominal size (DN). The thread is dairy round thread (Rd) to DIN 405-1, given as outer diameter in mm and pitch in inches. Weight is per piece.

Frequently asked questions

Which size should I choose?

Choose the same DN and thread as the union nut to be screwed onto the plug. Both are given in the table.