valco fittings
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VICI AG International Sales: + 41–41–925–6200 Fax: + 41–41–925–6201
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Microvolume Connectors
Micro-unions, -tees, -crosses, and -Y’s
have a unique two-piece design which
allows us to provide an extremely
small bore in a conventional ferrule
and nut fitting. The actual connection
area is separated from the nut threads,
with the ferrule detail in a metal
or polymer insert and the threads
machined into a stainless steel or
polymer ring. Since the insert has
a much smaller diameter than a
standard one-piece fitting, it can be
drilled with much shorter tools; and,
since a shorter drill has less tendency
to wander or break, holes as small as
.006" (0.15 mm) can be machined with
the same high degree of concentricity
found in all Valco fittings.
Valco microvolume fittings make it
possible to couple 100 micron ID
capillary GC, HPLC, or CZE columns
without special nuts and ferrules. A
stainless ring with one of the plastic
more information
FS fused silica
adapters . . . page 16
FSR fused silica
adapters . . . . . . 17
ZRF internal reducing
ferrules . . . . . . . 14
Ferrules
Metal . . . . . . . . 12
Polymeric . . . . . . 13
Stainless to fused silica union
1/16" fittings
Make-up adapter
1/16" fittings
CZE union
1/32" fittings
ss
ring
ss
insert
ss
ring
ss
insert
peek
ring
ctfe
insert
1/16" ss
tubing
1/16" ss
tubing
0.53 fs
tubing
0.25 fs
tubing
0.53 fs
tubing
0.10 fs
tubing
0.10 fs
tubing
Panel mounting
panel
ring
insert
8-32
screw
(not
supplied)
100 µm = .004"
150 µm = .006"
0.25 mm = .010"
0.50 mm = .020"
0.75 mm = .030"
1.0 mm = .040"
1.5 mm = .060"
2.0 mm = .080"
4.6 mm = .180"
6.0 mm = .236"
6.4 mm = .253"
7.0 mm = .275"
10.0 mm = .400"
27.0 mm = 1.08"
1/32" = 0.8 mm
1/16" = 1.6 mm
1/8" = 3.2 mm
1/4" = 6.4 mm
3/8" = 9.5 mm
1/2" = 12.7 mm
inserts provides electrical insulation
within the insert, while the PEEK ring
achieves total isolation.
The ring containing the threads
is made from PEEK or stainless
steel. Inserts are made of stainless
steel, Hastelloy C, Titanium, PEEK, or
CTFE. PEEK rings are not as robust
as stainless steel, and are not usable
above 75°C. The stainless steel ring
with a metal insert can operate at up
to 10,000 psi for HPLC or SFC.
All standard Valco zero dead volume
reducing ferrules (ZRF, FS, and FSR)
will work in these fittings. They are
uniquely designed to fill the void
between the fitting pilot and the
smaller tubing OD, eliminating any
dead volume in the fitting. (Reducing
ferrules such as Valco’s RF series should
be avoided, since they leave dead
volume.)
CHROMalytic TECHnology Pty Ltd AUSTRALIAN Distributors e-mail:
Tel: 03 9762 2034
