LOKRING® ALUMINIUM CONNECTORS TYPE 50
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LOKRING ALUMINIUM CONNECTORS TYPE 50 ® TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 RESPECT PROPRIETARY NOTICE PER ISO 16016!

6.0 TECHNICAL SPECIFICATIONS AND APPROVALS OF THE LOKRING CONNECTION 06 8.0 CONNECTIONS FROM ALUMINIUM TO COPPER TUBE 06 9.0 ALUMINIUM TUBE SPECIFICATION / ALUMINIUM STABILISATION INSERT (LOKRING VH AL) 07 10.0 STRAIGHT ALUMINIUM CONNECTOR (LOKRING NK AL 50) 08 11.0 STRAIGHT ALUMINIUM REDUCING CONNECTOR (LOKRING NR AL 50) 09 12.0 ALUMINIUM FLARE NUTS (LOKRING FN AL) 10 13.0 DECLARATION REGARDING PASSED TESTS ACCORDING EN 16084:2011 11 VALIDITY CLAUSE

VULKAN LOKRING LOKRING® ALUMINIUM CONNECTORS TYPE 50 TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 | 03 LOKRING’ ALUMINIUM CONNECTORS TYPE 50 1.0 INTRODUCTION The purpose of this document is to give technicians all information necessary about the solder-free LOKRING® tube connection technology in general and especially about aluminium LOKRING® connectors type 50 for use in refrigeration and air conditioning technology. 2.0 AREAS OF APPLICATION LOKRING® ALUMINIUM CONNECTORS TYPE 50 ARE BEING USED IN: © Refrigeration and Air conditioning Technology © Heat pumps © Air...

04 | LOKRING® ALUMINIUM CONNECTORS TYPE 50 TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 VULKAN LOKRING LOKRING* ALUMINIUM CONNECTORS TYPE 50 4.0 FUNCTIONAL PRINCIPLE The LOKRING® tube connection works on the basis of »simple« physical laws. It consists of two rings and one tubular joint which takes the two tube ends. During assembly, the tube ends are inserted into the joint to the inner limit. Then an assembly tool is used to push the two rings axially onto the joint. Due to the conical inner contour of the rings and the special outer and inner contour of the joint, the diameter of the...

VULKAN LOKRING LOKRING® ALUMINIUM CONNECTORS TYPE 50 TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 | 05 Check the expiry date before applying LOKPREP. Always make sure that the whole tube circumference is moistened with LOKPREP. POSSIBILITY A Rotate the moistened tube through 360° inside the joint. POSSIBILITY B Rotate the joint through 360° around the end of the tube. POSSIBILITY C Move the nozzle 360° around the tube to distribute the LOKPREP evenly. Always make sure that the LOKPREP is properly cured before exerting any force on the LOKRING connection by moving, turning or bending the...

06 | LOKRING® ALUMINIUM CONNECTORS TYPE 50 TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 6.0 TECHNICAL SPECIFICATIONS AND APPROVALS OF THE LOKRING CONNECTION VULKAN LOKRING Reference standards: EN 378-2 and ISO 14903 Max. operating pressure: 50 bar (725 psi) Admissible refrigerants: Suitable for all HFCs and mixtures, all HCs, R32 and HFO-1234yf. Not suitable for NH3. Temperature range: -50°C up to 150°C (-58°F up to 302°F) Tube diameter range: 6.35 to 22.23 mm (1/4" to 7/8") Minimum tube wall thickness: 0.8 mm Approvals: TÜV, UL (File SA12004) * Other material combinations on request....

VULKAN LOKRING LOKRING® ALUMINIUM CONNECTORS TYPE 50 TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 | 07 Article no. Article name min. tube outer-0 max. wall thickness min. wall thickness

08 | LOKRING® ALUMINIUM CONNECTORS TYPE 50 TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 VULKAN LOKRING Article no. Article name Dimension Notes

VULKAN LOKRING LOKRING® ALUMINIUM CONNECTORS TYPE 50 TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 | 09 ODT_2 (outer diameter tube) LPA (pre- assembled) LST (assembled) I i — i— i i \ LID_1 (insertion depth) Stabilisation insert LID_2 (insertion depth) Article no. Article name Dimension Notes mm | in mm | in mm | in mm mm mm mm

VULKAN LOKRING 10 | LOKRING® ALUMINIUM CONNECTORS TYPE 50 TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 Do not use EURO flare-fittings type LOKRING LR-EURO-EB with aluminium LOKRING connectors. LOKRING LR-EURO-EB Article no. Article name ODT LAN (ca.) WS (Nut) Thread (Nut) Tightening torque All connections of aluminium nuts with threaded connections made from a different material than aluminium have to be protected against contact corrosion.

VULKAN LOKRING LOKRING® ALUMINIUM CONNECTORS TYPE 50 TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 | 11 DECLARATION REGARDING PASSED TESTS 13.0 DECLARATION REGARDING PASSED TESTS Declaration regarding passed Tests according EN 16084:2011 (meanwhile replaced by ISO 14903:2017) In the time frame of: tests on tube joints according EN 16084:2011 have been performed at or on behalf of: VULKAN Lokring Rohrverbindungen GmbH & Co. KG Heerstraße 66 44653 Herne, Deutschland The joints consisted of: aluminium tube of following sizes: ø6.35 x 0.8 mm; ø9.53 x 0.8 mm; ø15.88 x 1 mm; ø22.23 x 1.25 mm....

12 | LOKRING® ALUMINIUM CONNECTORS TYPE 50 TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 VULKAN LOKRING ASSEMBLY InSTrUCTIonS LokrIng® tube connection assembly version 50 (The assembly version is determined on the basis of the last two figures in the article name. Example: LOKRING 6 NK Ms 50) 01. Tube deburrer 02. Abrasive mat 03. Stabilisation inserts 04. LOKPREP 05. Joint 06. Hand assembly tool 07. LOKRINGs 08. Permanent marker Deburr the tube end all the way round using a tube deburrer (01). Use different deburring tools for different materials. Clean the tube end by rubbing it in...

LOKRING® ALUMINIUM CONNECTORS TYPE 50 TECHNICAL DOCUMENTATION & SUBMITTAL VERSION 1.5 | 13 VULKAN LOKRING CHooSIng THE STABILISATIon InSErT ® LokrIng tube connection assembly version 50 Article name Stabilisation insert Tube wall thickness in mm (S) LokIn 6,35 VH Ms 08 Tube material Ms for brass* or Al for aluminium* Outer tube diameter (Ø) Ø = Outer tube diameter * Use Ms stabilisation inserts for copper tube and Al stabilisation inserts for aluminium tube. S = Tube wall thickness note: Stabilisation inserts must not be used inside an NRA adaptor or inside the stainless steel tube of a...