Din 11851 fittings

DIN 11851 sanitary fitting is a stainless steel hygienic connector and is named after the standard according to which it is made. It is characterised by an Rd circular thread and a D-shaped seal. However, manufacturers also offer seals with a special layer that fills the joint gap. With this, the connector achieves an even higher level of hygiene, which is important in the food industry. 

However, DIN 11851 food grade fittings are also used in other industries, such as cosmetics and chemicals. As they are made of stainless steel and offer very good performance in terms of resistance to working pressure, they are successfully used in the transport of various media. It is also important to note that DIN 11851 fittings can be purchased in many different sizes.

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HYGIENIC COUPLING DIN 11851 MALE PART WITH SERRATED HOSE TAIL ENDED BY MALE THREAD SS 316 INPART24

HYGIENIC COUPLING DIN 11851 MALE WITH HOSETAIL - SS 316

STANDARD DIN 11851 | HOSE TAIL FOR SAFETY CLAMPS & CRIMPING ASSEMBLY | MALE THREAD RD | SS 316

Available

from 126.37zł
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NUT DIN 11851 HYGIENIC COUPLING STAINLESS STEEL 304 ISO INCH INPART24

DIN 11851 NUT - SS 304

Material

AISI 304

STANDARD DIN 11851 - DIN 11864 (DIN/ISO/INCH) | FOR FEMALE PART | INNER THREAD RD | SS 304 |

Available

from 39.11zł
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DIN 11851 NUT WITH RUBBER PROTECTION SS 304 INPART24

DIN 11851 NUT WITH RUBBER PROTECTION - SS 304

Material

AISI 304

STANDARD DIN 11851 | WITH RUBBER PROTECTION | INNER THREAD RD | SS 304 |

Available

from 558.22zł
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HYGIENIC COUPLING DIN 11851 FEMALE WITH HOSE TAIL WITH CONE FOR NUT SS 316 INPART24

HYGIENIC COUPLING DIN 11851 FEMALE WITH HOSETAIL - SS 316

STANDARD DIN 11851 | HOSE TAIL FOR SAFETY CLAMPS & CRIMPING ASSEMBLY | FEMALE PART ENDED BY CONE FOR NUT DIN | SS 316

Available

from 44.35zł
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DIN WELDING CONE FEMALE PART DIN 11851 INPART24

DIN WELDING CONE FEMALE DIN 11851 - SS 316

Material

AISI 316

STANDARD DIN 11851 | DIN WELDING CONE | FEMALE PART FOR NUT DIN | SS 316

Available

from 23.07zł
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ISO WELDING CONE FEMALE PART DIN 11851 SS 316 INPART24

ISO WELDING CONE FEMALE DIN 11851 - SS 316

Material

AISI 316

STANDARD DIN 11851 | ISO WELDING CONE | FEMALE PART FOR NUT DIN | SS 316

Available

from 29.14zł
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ISO WELDING MALE COUPLING WITH MALE THREAD RD SS 316 INPART24

ISO WELDING MALE COUPLING MALE THREAD DIN 11851 - SS 316

Material

AISI 316

STANDARD DIN 11851 | ISO WELDING | MALE PART WITH MALE THREAD RD | SS 316

Available

from 37.46zł
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DIN WELDING MALE COUPLING WITH MALE THREAD RD SS 316 DIN 11851 INPART24

DIN WELDING MALE COUPLING WITH MALE THREAD DIN 11851 - SS 316

Material

AISI 316

STANDARD DIN 11851 | DIN WELDING | MALE PART WITH MALE THREAD RD | SS 316

Available

from 37.46zł
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NBR SEALING RING FOR DIN 11851 HYGIENIC COUPLING BLUE COLOR INPART24

NBR SEALING RING FOR DIN 11851 - BLUE

Gasket material

NBR

STANDARD DIN 11851 | MATERIAL: NBR RUBBER | COMPATIBLE WITH DIN/ISO/INCH | BLUE

Available

from 1.04zł
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Din 11851 fittings

How is DIN 11851 fitting constructed?

Regarding the construction, the DIN 11851 fitting consists of four components:

  • female part, 
  • male part, 
  • nut, 
  • seal (DIN 11851 seals are usually made of NBR rubber, but EPDM, FKM and silicone versions are also available).

All components of the connector (except the seal) are made of stainless steel. The DIN 11851 standard gives you the guarantee that you will receive a product made with precision. Furthermore, one that meets the requirements of many standards when it comes to transporting foodstuffs, as well as chemical or pharmacological substances.

What are the different types of DIN 11851 fittings?

It is worth noting that we distinguish between DIN 11851 fittings in terms of how they are assembled. They are divided into two basic types:

  • with hose stub (i.e. for a collet or clamp), 
  • weld-on.

What are the dimensions and parameters of DIN 11851 fittings?

When it comes to DIN 11851 food grade fittings, the dimensions available on the market offer a truly wide range of possibilities. You have a range of diameters from DN10 to DN150.

In addition to this, the maximum working pressure is an equally important parameter when choosing fittings. In this case, it depends on the diameter. According to consensus, we assume the following division:

  • fitting DIN 11851 DN15 to DN40 — 40 bar; 
  • fitting DIN 11851 DN50 to DN100 — 25 bar; 
  • fitting DIN 11851 DN125 to DN150 — 16 bar.

But remember that you should also consider the maximum working pressure of the hose and pipes in the installation.

Finally, it is still worth paying attention to the permissible temperature range. Well, in this case it all depends on the material from which the seal is made. Standard NBR rubber can withstand temperatures from -20 degrees Celsius to 70 degrees Celsius for hot water and even 164 degrees Celsius for steam.

How to connect DIN 11851 fittings together?

Joining DIN 11851 fittings together will not cause you any problems, as their construction is very simple. Just follow the steps below:

  1. Make sure that the DIN 11851 nut is on the female part of the fitting. 
  2. Insert the seal into the correct place on the male part of the fitting. 
  3. Join the male and female parts together. 
  4. Tighten the nut firmly and make sure the unit is tight.

Remember that, depending on the type of fitting (weld-on or with hose stub), installation will differ slightly.

With a hose stub and clamping ring, you are unlikely to encounter any major problems. However, when welding, take care to use the right technique so that the quality of the weld is high. Only then will the joint meet hygiene standards.

There must be no crevices or slots where the medium can settle anywhere.

FAQ

What is a DIN 11851 sanitary fitting?

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The DIN 11851 sanitary fitting is a part of the group of hygienic fittings, as it is used to transport food products and other media that require a high degree of sterility. It is made of stainless steel and consists of several basic components: a male and a female part, as well as a nut and a seal. As it is very popular in the dairy industry, it is also often referred to as the DIN 11851 dairy connector.

What is the DIN 11851 sight glass used for?

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The DIN 11851 sight glass is used for visual inspection of processes that take place in tanks, mixers, dryers, blenders, etc. It consists of a flange, a nut, a seal and a glass disk. It is the latter that allows a view into the interior of the tank.

Is the DIN 11851 sanitary fitting suitable for hot liquids?

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Yes, the DIN 11851 sanitary fitting is suitable for hot liquids. A standard NBR rubber seal can withstand temperatures of up to 70 degrees Celsius, while an EPDM rubber seal can withstand temperatures of up to 120 degrees Celsius and higher (depends on the blend).