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Valves
Micro-Splitter Valves
Micro-Splitter Valves
For interfacing LC-MS systems
Adjustable split stream fow rates
Medium and high pressure versions
The Upchurch Scientifc
®
line of Micro-Splitter Valves is designed to
accurately split andcontrol a low-fowstreamoff a single incomingsupply.
Choose between 1/4-28 flat-bottom and 10-32 coned threaded
versions. A valve is also available to accommodate applications
involving capillary tubing with a 6-32 coned threaded fitting for
MicroTight
®
tubing sleeves (see page 19).
The High Pressure Micro-Splitter Valves are designed to operate
successfully up to 4,000 psi (276 bar) and the medium pressure Micro-
Splitter valves are pressure rated to 800 psi (55 bar).
Graduated Valves offer many of the benefts and features of Micro-
Splitter Valves, plus the ability to adjust and set the split flow to
repeatable settings. This allows documentation of settings and the
resulting fow rates for easier method development. The graduations
alsomake it easier to employ the valve in a systemused to runmultiple
analyses that require different split fow rates. Choose from regular
High Pressure and Capillary versions.
M-405S
P-450
P-470
Part No. Description
Includes
Micro-Splitter Valves
P-450 Medium Pressure, 1/4-28, Biocompatible
(3) XP-235
P-451 Medium Pressure, 10-32, Biocompatible
(3) F-120
P-460S High Pressure, 10-32, with Stainless Steel Needle
(3) F-120
P-460T High Pressure, 10-32, with Titanium Needle
(3) F-120
graduated Micro-Splitter Valves
M-472 High Pressure Capillary Graduated, 10-32/6-32,
with Stainless Steel Needle
(2) F-120, (1) F-125*
P-470 High Pressure Graduated, 10-32,
with Stainless Steel Needle
(3) F-120
* Use with the MicroTight Tubing Sleeves, found on page 19
Part No. Valve Type
Threads
Internal Volume
1
(closed/fully open)
Max. Operating
Pressure
M-405S ,T High Pres. Capillary
10-32 / 6-32 1.2 / 2.4 µL
4,000 psi (276 bar)
M-472 High Pres. Cap. Grad. 10-32 / 6-32 1.2 / 2.4 µL
4,000 psi (276 bar)
P-450 Medium Pressure
1/4-28
2.1 / 4.1 µL
800 psi (55 bar)
P-451 Medium Pressure
10-32
1.2 / 2.8 µL
800 psi (55 bar)
P-452 Medium Pres. Capillary 10-32 / 6-32 1.2 / 2.4 µL
800 psi (55 bar)
P-460S,T High Pressure
10-32
1.2 / 2.8 µL
4,000 psi (276 bar)
P-470 High Pres. Graduated 10-32
1.2 / 2.8 µL
4,000 psi (276 bar)
1
The supply and waste port thru-holes have IDs of 0.020” (0.50 mm). The ID for the split-stream port
thru-hole is 0.020” (0.50 mm) in standard versions; in capillary versions it is 0.010” (0.25 mm).
Specifcations
Thumbscrew
1.40”
(3.56 cm)
1.13”
(2.87 cm)
P-451
Medium Pressure
Micro-Splitter Valve
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With an incoming fow rate of 1mL/min using room temperature water
and equal pressures on both outlet lines, the minimum split fow rate
is 2 µL/min for the medium pressure micro-splitter valves and 4.8 µL/min
for the high pressure micro-splitter valves.
All Micro-Splitter Valves have been tested at fow rates to 100 mL/min,
with a maximum resulting pressure drop of only 45 psi (3.1 bar) when
the valve is fully opened.
Application Note
FOR ORDERING & DISTRIBUTOR INFORMATION +1 800 426 0191 • +1 360 679 2528 • www.idex-hs.com