with lokring - Ledocom.cz

WITHOUT LOKRING WITH LOKRING
WITH KNOW-HOW MADE IN GERMANY
TECHNICAL FEATUREs
Hermetically sealed metal/metal tube connection through surface compression,
i.e. no O-ring or cutting ring seal.
Permanent tube connection according to EU standard EN 378-2**
Purely mechanical tube connection, i.e. »cold« tube connection without
thermal method such as soldering or welding.
TÜV-TEsT REsULT REQUIREMENT
Leak test Hermetically sealed Airtight (< 2 x 10 – 6 mbar l/s helium 4.6)
Temperature and alternating pressure
resistance test
Burst test 350 – 400 bar (tube burst) 5 x rated pressure (250 bar)
18 | 19
Air-tightness after 2600 cycles with temperatures changing between
–10 °C and 110 °C and pressure loads alternating by ± 40 bar
during a cycle period of 15 min.
Inner pressure threshold test 2 x 10 5 load change from 1 – 50 bar
Pressure test At least 1.1 x rated pressure (gaseous)
qUALITY MANAGEMENT | TÜV CERTIFICATION
PERMIssIBLE AREAs OF APPLICATION
Operating pressure: 50 bar with 5-fold safety, i.e. 250 bar.***
Temperature range: –50 °C to +150 °C
Tube diameter: 1.6 to 35 mm****
Tube wall thickness: 0.5 to 1.5 mm
We will be happy to provide advice on further areas of application.
Alternating bending test 2 x 10 5 load change, inner pressure 50 bar
* In addition to the comprehensive TÜV tests, the LOKRING tube connection was tested to maximum extreme loads in tensile tests. The result is impressive: The connection can withstands an pullout force
of up to 40 kN without any problems. This corresponds to a weight of approx. 4 tonnes, in other words the weight of a fully grown elephant!
** This standard is currently under review
*** The maximum operating pressure for LOKRING aluminum pipe joints is 25 bar.
**** The maximum pipe diameter for LOKRING aluminum pipe joints is 1.6 to 16 mm for this approval