flow, pressure, and on/off control devices
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Micrometering Valves
Micrometering (needle) valves
combine the ease of connection
associated with Valco zero dead
volume fittings with convenient
bulkhead mounting. The very low
internal volume and precision design
make this valve ideal for use as a gas
control valve in chromatographic
systems.
The Viton
®
model is rated at 225°C,
while a version with Kalrez™ seals is
capable of continuous operation at
315°C. This allows a needle valve to
be mounted directly within a heated
oven, facilitating control of flow
1/16" micrometering valves
with Valco fittings
Seal
Lubrication
Prod No
Standard:
2–225 ml/min@ 15 psi N
2
inlet
Viton
Lubricated
ZBNV1
Viton
Non-lubricated
ZBNV1-D
Kalrez
Non-lubricated
ZBNV1-KZ
Fine control:
2–175 ml/min@ 15 psi N
2
inlet
Viton
Lubricated
ZBNV1F
Viton
Non-lubricated
ZBNV1F-D
Kalrez
Non-lubricated
ZBNV1F-KZ
Low flow:
2–90 ml/min@ 40 psi N
2
inlet
Viton
Lubricated
ZBNV1LF
Viton
Non-lubricated
ZBNV1LF-D
Kalrez
Non-lubricated
ZBNV1LF-KZ
1/16" micrometering valves
with 18" tubes
Seal
Lubrication
Prod No
Standard:
2–225 ml/min@ 15 psi N
2
inlet
Viton
Lubricated
BNV1
Viton
Non-lubricated
BNV1-D
Kalrez
Non-lubricated
BNV1-KZ
Low flow:
2–90 ml/min@ 40 psi N
2
inlet
Viton
Lubricated
BNV1LF
Viton
Non-lubricated
BNV1LF-D
Kalrez
Non-lubricated
BNV1LF-KZ
INLET
OUTLET
switching in multidimensional systems
while keeping the gases at oven
temperature.
Valves are rated for maximum of
1000 psi gas. They are individually
tested on a mass spectrometer
leak detector to a helium leak rate
specification of < 1 x 10
-8
atm cc/sec.
An unlubricated version with a
specially polished seat was designed
to be used with our pulsed discharge
detectors, and should be used
upstream of any ultrapure gas system.
There is also a 1/16" tube version.
CHROMalytic TECHnology Pty Ltd AUSTRALIAN Distributors e-mail:
Tel: 03 9762 2034
