REFRIGERATION AND AIR CONDITIONING INSTALLATION, SERVICE AND ORIGINAL EQUIPMENT Solder-free tube connections, tools and accessories for refrigeration and air-conditioning technology WELCOME TO VULKAN LOKRING WE ARE YOUR GLOBAL PARTNER FOR TOP CONNECTIONS VULKAN LOKRING WORLD-WIDE 002 | 003 DEAR CUSTOMER, For more than 30 years now, VULKAN LOKRING’s success has been founded on solder-free tube connection technology for refrigerant lines. Originally developed for the absolute extreme conditions of space technology, we have continually optimised our tube connections for the purposes of refrigeration and air-conditioning technology following takeover of the global patent rights for the tube connection technology, and have since de- veloped into the leading specialist in this area on the world market. In the meantime, more than 1,000,000,000 LOKRINGs have been successfully used in the industrial volume production of vehicle air-conditioning systems, cooling and freezing units. Every year, many more millions of vehicle air-conditioning systems, refrigerators and freezers leave the production lines of the leading manufacturers of vehicles and white goods with LOKRING tube connection technology installed. The expert knowledge we have gained as an original equipment manufacturer to industry can of course be drawn on continually for our tube connections for industrial refrigeration and air-conditioning technology, too. This enables VULKAN LOKRING to be able to offer you a coordinated system of tube connections with TÜV certificate and in OE quality for almost every installation or service situation. Alongside the tried-and-trusted tube connections, VULKAN LOKRING also supplies a comprehensive range of tools and devices in order to offer you, as a partner in refrigeration and air-conditioning technology, a complete system solution from a single source. Thanks to a world-wide sales network in more than 30 countries and production facilities in Germany, USA, Brazil and India, our teams of experienced engineers provide competent service directly on site. Our world-wide procurement management guarantees top- quality products at prices to suit the market. Make the most of VULKAN LOKRING’s experience and services as your best connection! Sebastian Hackforth Dr. Achim Brodde CONTENTS SUMMARY OF ALL PRODUCTS VULKAN LOKRING: OUR PATENTED SYSTEMS | P. 006 AND THIS IS HOW IT WORKS Subject Page This information will have you LOKRING in refrigeration and air-conditioning technology 006 raring to go with the LOKRING LOKRING assembly 008 tube connection technology. The LOKRING functional principle 010 The use of LOKRINGs is easy, LOKPREP fluid 011 quick, clean, reliable and Quality management 012 economical – see for yourself! TÜV certification and technical features 013 LOKRINGing rather than soldering – your advantages 014 The LOKRING areas 016 LOKRINGS, EURO FLARE-FITTINGS & YT-bRANchES: SOLDER-FREE CONNECTIONS | P. 018 TOP CONNECTIONS Subject Page Whether you are a beginner or convinced user, you will find LOKRING 018 our comprehensive range of Assembly tools 021 tube connections with the Basic equipment 024 respective assembly tools here. Connectors 026 This system will make you a Connectors with schrader valve 027 specialist in solder-free tube T-connectors 028 connections in the twinkling of Elbow and long radius elbow connectors 029 an eye. Reducers 030 Reducers with schrader valve 033 T-reducers 034 Elbow reducers 035 Stabilisation inserts »LOKIN« 036 EURO flare-fittings 038 EURO flare-fitting with LOKRING connection 039 EURO flare-fitting seals 039 EURO flare-fitting tools 040 YT-branches 042 YT-branches metric and inch sizes 042 YT-branch sets metric and inch sizes 044 LOKTUBE 046 Copper tubes 046 Tools for processing tubes 048 VULKAN LOKRING CONTENTS 004 | 005 REFRIGERATION AND AIR cONDITIONING SERVIcE: TOOLS AND DEVICES | P. 050 TOOLS AND DEVICES Subject Page Everything from one source Extraction, evaporation, charging | Mobile A/C servicing 052 Our comprehensive assortment Evacuating and charging station 052 of tools and devices includes Extraction unit | Extraction system 053 everything you need for profes- Vacuum pumps 054 sional work in refrigeration and Vacuum pump station | Product configurator 056 air-conditioning technology. Digital scales 058 Thanks to in-house production Charging module 059 and certified procurement management, we guarantee top Leak detection 060 quality for our products. With tracer gas 060 With R134a leak detectors 063 With universal leak detection device 063 With nitrogen 064 Reference leak adapter 065 Measuring and diagnosis devices 066 For vacuum measurements 066 For pressure tests 068 temperature and humidity measurements 074 For sound level measurements 078 | 079 REFRIGERATION AND AIR cONDITIONING SERVIcE: ACCESSORIES AND CONSUMABLES | P. 080 ACCESSORIES AND CON- Subject Page SUMABLES Charging hoses 082 Here you can find the acces- Thermoplastic tubes 086 sories and consumables you Quick couplers 092 need for professional applica- Screw connections 096 tions in refrigeration and air Refrigerant charging 099 conditioning servicing. Further accessories 100 Consumables 103 VULKAN LOKRING: BEST CONNECTIONS | P. 106 OUR SERVICE Subject Page Would you like to request more Information fax 108 information about other VULKAN Order fax 109 LOKRING products, or send an Index 110 inquiry or order? You’ll find the Notes 112 documents you need here. We’re happy to help. LOKRING: ADVANTAGE OF SOLDER-FREE TUBE CONNECTIONS QUICK, CLEAN AND RELIABLE The patented LOKRING tube connection system provides an air-tightness. This is confirmed by the special TÜV test and innovative system of solder-free tube connections for every approval*. All this makes LOKRING tube connections one installation situation in refrigeration and air-conditioning tech- of the most economical and reliable methods of connecting nology. LOKRING tube connections can be made without a refrigerant tubes. great deal of force being necessary, using simple hand assembly tools. LOKRING guarantees an absolutely clean, permanent and purely mechanical tube connection with long-term hermetic * See page 13 for further information about the TÜV test and approval THE ADVANTAGES OF THE LOKRING PRINCIPLE AREAS OF APPLICATION approx. 40 % time saving Areas of application for LOKRINGs include all refrigerant pipes Absolutely clean, efficient and reliable in the areas of installation, service, original equipping of: Installation work during business hours and public access Air-conditioning systems (split, multi-split, VRF, HVAC) Installation work in situations where there is a fire hazard Industrial product cooling Light hand assembly tool without energy connection Heat pumps Installation can also be carried out by non-skilled workers Solar thermal systems No nitrogen as protective gas Geothermal energy No solder-related quality problems CONCLUSION: CONCLUSION: Every split and bond system in refrigeration and Cost and time savings of up to 40 % air-conditioning technology. LOKRING IN REfRIGERATION AND A/C TECHNOLOGY 006 | 007 LO K RING TUBE CONNE C TI O N S R 1 3 4 a – R 0A 290 – R404A – R407C – R 4 1 0A – R60 ONE SYSTEM – ENDLESS POSSIBILITIES Couplers and reducing connectors YT-branches Euro flare-fittings Long radius elbows Elbows and elbow reducers T-connectors and T-reducing connectors CONCLUSION: Doesn’t work? – There’s no such thing! LOKRING ASSEMBLY ONE JOINT, TWO RINGS, FOUR STEPS – THAT’S ALL THERE IS TO IT. A LOKRING tube connection can be made without a great deal methods for yourself, and you will see that »lokringing« has the of effort. All you need is a LOKRING tube connection, a hand potential to become a classic. Where DIY experts have their assembly tool and some LOKPREP. The ergonomic hand »rawl plugs« or »flex«-cut materials, you and your customers assembly tool works without energy connection, and the paten- could be »lokringing« in all sorts of situations. ted lever mechanism means extremely little strength is needed for assembly. Compare it with conventional tube connection THE COMPONENTS OF A LOKRING CONNECTION JOINT The shape of the joint to be used is defined by one of the many types, sizes and repair situations. LOKRINGS When assembled, LOKRINGs guarantee a permanent tube connection. Up to a diameter of 12 mm, the LOKRINGs are pre-assembled on the fitting when delivered. LOKPREP Thanks to its specially deve- loped properties, LOKPREP secures the airtight seal of the tube connection for a lifetime. LOKTOOL The hand assembly tool redu- ces the manual force needed during assembly. The assembly jaws are easy to replace to match the size of the LOKRING to be fitted. LOKRING ASSEMBLY 008 | 009 STEP 01 | TREAT THE TUBE ENDS To make a tube connection, the tube ends must be metallic bright and free of longitudinal grooves caused by production. To remedy this, clean and polish the tube ends with our sandpaper or abrasive mats. STEP 02 | APPLY LOKPREP Next, wet the whole tube circumference with LOKPREP by guiding the bottle 360° around the outside of the tube. Apply the LOKPREP a little away from the cut edge to prevent it getting onto the inside of the tube. Depending on the repair situation, there are several different possibilities of applying LOKPREP over an area - see page 11. STEP 03 | INSERT TUBES * Then insert the tube ends with the LOKPREP film into the joint. Make sure that the ends of the tubes are inserted to the inner limit of the joint and remain fixed in this position during assembly. * Please note the instructions about the use of LOKIN sleeves on page 36 / 37. STEP 04 | PRESS Finally, set the assembly tool behind the LOKRING and the assembly stop on the joint and press the LOKRING axially onto the joint until it is flush to the assembly stop – that’s all there is to it! THE LOKRING FUNCTIONAL PRINCIPLE PATENTED AND FREELY COMBINABLE HOW LOKRING WORKS The patented LOKRING tube connection works on the basis of »simple« physical laws. It consists of two LOKRINGs 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 LOKRINGs axially onto the joint. Due to the conical inner contour of the LOKRINGs and the special outer and inner contour of the joint, the diameter of the joint is reduced during assembly so that the tube and the joint form a metallic- hermetic connection through surface pressing. The lifetime air-tightness of the fitted connection is guaranteed by the state of permanent elastic pre-tension, which is produced by the balance of the radial forces of the LOKRINGs acting in the opposite direction to the tube to the LOKRINGs. THE LOKRING MATERIAL COMBINATIONS What can you connect using LOKRINGs? There’s a simple answer to that: All the metallic tubes commonly used in air-conditioning and refrigeration technology. There is almost no limit to the combination variations here. One rule of thumb is: If at least one of the tubes to be connected is made of aluminium, an aluminium LOKRING must be used as well. In all other cases, a brass LOKRING is used. In the case of special tube materials, tube coatings or environmental influences on the material we will be happy to help. MATERIAL ASSIGNMENT Copper Brass Steel Aluminium