actuators and accessories
200
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VICI AG International Sales: + 41–41–925–6200 Fax: + 41–41–925–6201
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Ideally, the purge housing should be
ordered when a new valve is ordered,
so that it can be factory-installed.
Field installation of purge housings is
generally not recommended. To order
a new valve with a purge housing, add
the suffix “PH” to the product number
for the valve/actuator assembly, and
add $200 to the price. The purge
housing requires a standoff assembly,
which can be 2", 3", 4", or 6" long.
All Valco two position valves with
two threaded mounting holes will
accommodate a purge housing
without modification. Some two
position valves must be modified at
the factory to accept the housing.
The charge for modifying an existing
valve includes the new purge housing.
Call our service department to make
arrangements for this service.
Purge Housings
purge housingwithvalve
Purge housings for Valco valves
eliminate any possible diffusion from
the atmosphere
into
the valve, or
safely vent fugitive emissions
from
the valve. They are typically used in
trace level analyses to isolate the valve
from ambient air, but can also be used
as a safety measure to isolate a valve
against leaks into the atmosphere,
such as when pyrophoric, toxic, or
carcinogenic materials are present in
the sample stream.
Two screws secure each half of the
purge housing to the valve, so that
the rear chamber of the housing
(the preload assembly/spring side of
the valve) can be removed for rotor
inspection or replacement without
affecting the actuator side of the
housing.
STANDOFF
ASSEMBLY
FRONT
CHAMBER
OR012V
O-RING
OR018V
O-RING
OR025V
O-RING
W6
WASHERS
REAR
CHAMBER
OR018V
O-RING
OR025V
O-RING
valve
specs
Maximum
temperature:
175°C
Note: The purge
housing limits
the maximum
temperature of the
purged valve to
175°C, regardless
of the valve
specifications.
Purge housings
for two position valves and selectors
Description
Prod No
Notes
On a new valve
Add suffix PH Add $200
Requires standoff
to valve prod no to valve price assembly.
Multiposition valve
requires an actuator.
On existing valve,
factory installation Contact factory
On existing valve,
for field installation Not recommended
CHROMalytic TECHnology Pty Ltd AUSTRALIAN Distributors e-mail:
Tel: 03 9762 2034
