Vu2 Union™ Column Connectors
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800-356-1688
•
14
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Vu2Union™Connectors
• Connect a guard column to an analytical column.
• Connect a column to a transfer line.
• Connect two columns in series.
• Repair abroken column.
Restek’sVu2Union™ connector combines the sim-
plicity of a Press-Tight® unionwith the strength of
ametal union. TheVu2Union™ connector reliably
couples one analytical column to another, or to a
transfer line or guard column. The columns cannot
unexpectedly disconnect, even at temperatures as
high as 400°C.
HowdoesaVu2Union™connectorwork?
APress-Tight® union in theVu2Union™ connector joins the fused silica ends together; the ferrule and
knurlednut at each endof the connectorhold the tubing inplace via a secondary seal between the ferrule
and thePress-Tight®union.Eachknurlednutapplies independentpressure toeach ferrule, tomakea leak-
tight seal with the column end. These ultra-strong connections will not unexpectedly disconnect under
temperature changes, vibrations, or other stresses normally encountered inGC analyses.Theopendesign
allows visual confirmation of the seal between the column and the Press-Tight® union, to ensure confi-
dence in theconnection.Hang theconnector from thecolumncage, tominimizestresson theconnections.
Whowillbenefit fromusingVu2Union™connectors?
Any analyst using guard columns, transfer lines, or restrictor tubing, performing a dual-column analysis
withcolumns connected in series,or seeking to repair abrokencolumnwill findVu2Union™connectors
the simple, reliable, easy-to-use solution to their connectionneeds.
Kits include:Vu2Union™body, 2knurlednuts, 2Press-Tight®unions, and4 ferrules
Description
Ferrules Fit Column ID
qty.
cat.#
price
Vu2Union
™
Connector Kit
0.10/0.15mm
kit
22220
$135
Vu2Union
™
Connector Kit
0.18/0.28mm
kit
21105
$135
Vu2Union
™
Connector Kit
0.32mm
kit
21106
$135
Vu2Union
™
Connector Kit
0.45/0.53mm
kit
21107
$135
Knurled nut
2-pk.
21108
$27
Patent pending.
NOTE: Not recommended for
GC column-to-MS
connections—use theVacuum
Vu-Union
®
(see our general
catalog orwebsite).
Secure, reliable
column-to-column
connections!
injector
guard
column
detector
analytical
column
Vu2Union™
connector
Aguard column connected toananalytical
columnbyaVu2Union™ connector.
TheVu2Union™ connector’sopendesignallows visual confirmationof the seal; secondary seals
ensurea leak-tight connection.
hanger
knurled nut
body
Press-Tight
®
connector
ferrule
fused silica column,
guard column,
or transfer line
UniversalPress-Tight®Connectors
Description
5-pk.
/price
25-pk.
/price
100-pk.
/price
Universal Press-Tight
®
Connectors
20400
$41
20401
$164
20402
$492
Deactivated, Universal Press-Tight
®
Connectors
20429
$48
20430
$190
20431
$633
Siltek
®
TreatedUniversal Press-Tight
®
Connectors
20480
$51
20449
$214
20481
$685
GraphiteFerrules forVu2Union™Connectors
• High-purity, high-density graphite.
• Stable to450°C.
• Nobinders that canoff-gas or adsorb analytes.
• Smooth surface and clean edges.
Ferrule ID
Fits Column ID
Graphite 2-pk.
/price
Graphite 10-pk.
/price
0.3mm
0.10/0.15mm
22221
$21
22222
$84
0.4mm
0.18/0.28mm
20280
$21
20281
$86
0.5mm
0.32mm
20282
$21
20283
$86
0.8mm
0.45/0.53mm
20284
$21
20285
$86
