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A HIGHLY RELIABLE METHOD FOR JOINING METALLIC TUBING 1 2 The LOKRING Tube Connection allows a fast and reliable connection of tubes, even of different material. This tube connection system is a cold, clean method that eliminates brazing, burn permits, damage due to flame, and the need for nitrogen flow during installs. Reports from the field indicate Labor savings of between 30% and 50% on various Ductless System Installations. 3 The Simple Steps To Making LOKRING Connections 4
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INSTALLATION
of VRV / VRF
System
Using Lokring
INSTALLATION
of VRV / VRF
System
Using Lokring1
Roof Mount Outdoor UnitRoof Mount
Outdoor Unit
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FINISHED OUTDOOR UNITFINISHED OUTDOOR UNIT
Avoid mechanical stress and misalignment of tubing
by carefully laying out & supporting tubing prior to completing connections.
Expansion loops and cutouts should always be
included as per manufacturers guidelines.
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EURO FLARE CONNECTIONEURO FLARE CONNECTION
R410A Lokring Euro Flares are available in
sizes ¼ inch thru ¾ inch.
These connections are used at Outdoor Units, Branch Selector Boxes,
and Indoor Units.
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R410A systems require exacting flare specifications and forming procedures. These specs are
different than standard 45 degree SAE flares.
Failure to follow manufacture’s specs on flare connections is the Number 1 cause of System Leaks
R410A Euro Flares take the Failure Modes Out!
Lokring Euro Flares include replaceable preformed flare
inserts, nut and Lokring connector half body, and are designed for use on R410A
system.
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Installing a Lokring R410A Euro Flare
A drop of oil compatible with the system oil should be applied to the seal and back of the flare body to ensure accurate torque reading.
No joint compound or sealer should be applied to mating surfaces of flare faces. Threaded connection should be tightened to manufactures specs before completing Lokring connection.A new flare insert should be used each time the connection is loosened or taken apart for service.
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Roof Access Connections Roof Access Connections
Lokring offers elbows and tees in
both metric and SAE tube sizes.
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Lokring Long Radius Elbow versus Lokring
Standard Elbow.
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Installing InsulationInstalling Insulation
Standard insulation will slide over
Lokring connectors.
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Indoor Unit ConnectionsIndoor Unit Connections
Lokring connectors allow for
preassembly prior to final connection
helping in awkward or tight locations.
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Completed Indoor Unit ConnectionsCompleted Indoor Unit Connections
Tubing should be supported before
completing Lokring connections.
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Pre-position parts for the installation, to help
the assembly in constricted or tight
areas.
INSTALLATION OF THE TUBES
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FINISHED INSTALLATIONFINISHED INSTALLATION
Planning your piping layout and allowing for the
last connection to be on the longest run, assists with avoiding stress
points.
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Y-TUBES FOR MULTISPLITTINGY-TUBES FOR MULTISPLITTING
Layout of an inverter system:LOKtube YT and YP
branches are used to join various styles of indoor units
to a single out door unit. LOKtube headers are also
available.
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LOKtube YT-Branches at Multi Indoor UnitsLOKtube YT-Branches at Multi Indoor Units
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Application off LOKtube YT branches.
THE COLD CLEAN CONNECTIONTHE COLD CLEAN CONNECTION
Internal Cleanliness comparison of a Lokring Connection and a Brazed Joint.
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Speed and Ease of Installation The LOKRING Tube Connection allows a fast
and reliable connection of tubes, even of different material. This tube connection system is a cold, clean method that eliminates the need
for Brazing.
Field reports indicate a Labor savings of between 30% and 50% on various Ductless System
Installations and also eliminates the need for nitrogen flow during installs.
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