The 6 connection options for hygienic process tubing systems compared

The 6 connection options for hygienic process tubing systems compared

 

 

#1. Tri clamp connections.

Tri-clamp-hygienic-connections

 

Clamp unions, also called triclamps, are used where a product line needs to be checked or cleaned very frequently.
There are no tools needed for making or breaking the connections and that's really a big advantage.
​​Tri-clamp unions can be found worldwide in hygienic production lines.
Industries:
■ Dairy
■ Breweries
■ Cosmetics
■ Chemicals
■ Food and beverage
■ Pharmacy
​■ Biotech
For tube standards:
■ DIN 11850
■ ASME BPE
■ BS 4825
■ ISO 2037
Parts:
■ Two identical ferrules
■ A hinged clamp
■ A seal ring

#2. DIN 11851 unions.

what-is-a-DIN-11851-union

DIN 11851 is the German standard for four part hygienic unions. 
These types of unions are used in product lines that require regulary assembling and disassembling.
Normally the wetted parts are supplied in 316L stainless steel and the nuts are grade 304.

DIN 11851 unions are used extensively in Germany, but also  throughout Europe and in the Middle East.

 

Industries:
■ Dairy
■ Breweries
■ Cosmetics
■ Chemicals
■ Food and beverage
■ Pharmacy
​■ Biotech

 

For (tube) standards:
■ DIN 11850

 

Parts:
■ A male threaded part
■ A liner
■ A round slotted nut
​■ A D-section seal


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#3. SMS unions.

SMS-union-technical-details

 

SMS (Swedish Manufacturing Standard) unions ​are also four parts unions with a round swivel nut, just like the DIN 11851 unions.
But there are some major differences:
  DIN 11851 SMS
Female part Conical face Flat face
Male part Deep seal Turned up seal
Seal D-Shape Square shape
Working pressure 25 bar (362 PSI) 6 bar (87 PSI)

 

In general, SMS couplings are available in the same countries as the DIN 11850 couplings.

 

Industries:
■ Dairy
■ Breweries
■ Cosmetics
■ Chemicals
■ Food and beverage
■ Pharmacy
​■ Biotech

 

For tube standards:
■ BS 4825
■ ISO 2037

 

Parts:
■ A male threaded part
■ A liner
■ A round slotted nut
​■ A square shape seal

 

#4. RJT unions.

RJT-unions-technical-info

RJT (Ring Joint Type) unions are the most popular hygienic connection type in the UK, but they are also used in other countries.

 

Industries:
■ Dairy
■ Breweries
■ Cosmetics
■ Chemicals
■ Food and beverage
■ Pharmacy
​■ Biotech

 

For tube standards:
■ BS 4825
■ ISO 2037

 

Parts:
■ A male threaded part
■ A pressed liner
■ A hexagon nut
​■ An O-shape seal

 

#5. IDF unions.

IDF-union-technical-info

#6. Flanged connections.

sanitary-flange-connection_hf