Sanitary Stainless Steel Unions / Couplings

Food Grade Unions / Couplings

Tri Clamp Union
SMS Union
DIN Union
RJT Union
IDF Union
Vacuum KF Clamp Union

Sanitary Unions / Couplings come in different standards

The different unions above represent different Sanitary Standards . SMS (Swedish Milk Standards), DIN (German Standards), RJT (Ring Joint Type), IDF (International Dairy Federation, 3A (American FDA Standards).

The most important differences between these standards are 

  • Welding Outer Diameter, Inner Diameter, and Thickness, you need to use Unions from the same standards as your pipe line to make sure you can weld them together

  • Design and thread size- Different designs means Unions from different standards are incompatible with each other, you cant lock an SMS Union with a Nut from a DIN Union.

  • Tri Clamp Unions can be tightened and loosen without any special tools, while the rest require compatible spanners. 

Unsure about which Standards are suitable for your pipe line? Call us, we will show you how to determine your current pipe line standards.

Have a Question?
contact us at
or call  03-3323 5027

Based in Selangor, we are able to cover all parts of Malaysia and Singapore.

It will be our privelege to help you.


Look for us at

No. 18, Jalan Abdul Haji Karim 26/KS 02,

Taman Klang Ria, 41200 Klang, Selangor.

(Please call us before you come so that we can make sure we are available for you)