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Chapter 1
Introduction Valve Oven Overview
Operating Manual 13
Options
The type of valve enclosure can be selected among three different options
depending on the analytical requirements.
1. TRACE GC Ultra Valve Oven
It provides an additional isothermal heated zone to accomodate valves and
columns. It consists of an inner heated enclosure and an external unheated
area. The former is designed to house up to four heated valves, restrictors and
1/8” OD packed columns. The latter houses up to two valves and pressure
regulators. This option is therefore particularly suitable for applications such
as natural gas or refinery gas analyses where, together with the GC column
oven, an additional isothermally heated area is required for gas sampling,
column switching, storing or sample cutting valves. It can accommodate up to
four constant pressure regulators, up to eight needle valves, plus front and rear
sample and carrier gas inlets/outlets.
2. TRACE GC Ultra Valve Box for Up to Six Valves
This version is the same as previous option (TRACE GC Ultra Valve Oven)
but without heating elements. It provides an additional cold zone to
accommodate up to four gas sampling/switching valves, up to two valves for
liquid sampling, restrictors and 1/8” OD packed columns.
It is therefore particularly suitable for engineered applications that can be
exploited at ambient temperature, for which multi-column and/or multi-valve
configurations (sampling, switching, storing or heart-cutting) are required.
It can also accomodate up to four constant pressure regulators, up to eight
needle valves, plus front and rear sample and carrier gas inlets/outlets
3. TRACE GC Ultra Valve Box for Up to Two Valves
This version is the same as previous option (TRACE GC Ultra Valve Box for
Up to Six Valves) but can accomodate ONLY up to two valves, thus providing
a customized solution for not highly demanding engineered applications. This
version does not include any electronics; the drivers for the two three-way-
valves controlling the pneumatic actuators are installed on the TRACE GC
Ultra.
It is able to accept restrictors and 1/8“ OD packed columns; it can also
accommodate up to four constant pressure regulators, up to eight needle
valves, plus front and rear sample and carrier gas inlets/outlets.