KAN-therm: Connectors/fittings
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Tube couplings are provided with pressed-on tips with an O-ring seal or pressed-on tips with a female or male thread to PN-EN10226-1: 

  • knees, elbows and tees, pipe connectors,

  • threaded connectors type GZ and GW and screw joints,

  • approaches to receivers and fittings/fixtures,

Fittings are made of alloy steel (chromium-nickel-molybdenum) #1.4404, AISI 316L.


Sealings (O-rings)

The standard version of KAN-therm Inox and Inox System fittings is provided with EPDM rubber O-rings satisfying the PN-EN 681-1 requirements. For special applications they are delivered with Viton O-rings.

The table gives working parameters and application range for these fittings:

Material Colour Working parameters Application


EPDM rubber


max. working pressure: 16 bar
working temperature: -35°C do 135°C
short-term: 150°C

- central heating systems
- cold and hot tap water systems
- hydrant systems
- for glycol solutions and compressed air (without oil) systems



fluoric rubber 


max. working pressure:
16 bar
working temperature:
-30°C - 180°C
short-term: 230°C

- solar
- compressed air
- furnace oil
- fuel
- for vegetable oils


fluoric rubber 


max. working pressure:
9 bar
working temperature:
-20°C - 175°C
short-term: 190°C

- water steam
- diameters: 15-54 mm



All the fittings of KAN-therm Inox System within 15-108 mm dimensions contain LBP function (unsealed connections alert -  LBP-Leak Before Press).

Within 15-54 mm dimensions the function is realized by a specially designed O-rings. With a special grooves LBP O-rings provide optimal control over connections during the pressure test. Unsealed connections are leaky and therefore easy to locate.


Within 76,1 - 108 mm dimensions the LBP function is realized by an appropriate shape of fitting (pipe connector ovalisation).




The life of Inox system O-rings was tested by the DVGW Institute and according to these test this life should not be shorter than 50 years.