valco fittings
|
Valco Instruments Co. Inc. Sales:
800–367–8424
Fax: 713–688–8106
|
49
Filters
dead
volume
tube made up in a
standard union
Filter with
removable frit
Coned for uniform flow
and maximum filter surface
dead
volume
REMOVABLE
FRIT
tube made up in
a filter
coned filter
liner
cone in
filter body
cone in
filter body
cone in
filter body
Filter with frit removed
being used as a reducing union
Dead volume is created
where frit should be
Filter with frit removed
being used as a reducing union
Cone in filter body
creates dead volume
Arrow imprinted on filter body
showing recommended direction of flow
Filters with removable frits are
designed to compensate for the
thickness of the filter element – the
resulting pilot depths are identical
with the rest of the Valco product line,
facilitating interchangeability of
made
up
fittings. Therefore, although our
filters look very much like our unions,
they are not interchangeable with
unions; a filter with its frit removed
should not be substituted for a union,
because the space designed for the
frit introduces dead volume into the
system. In addition, since filter bodies
are coned, they will have dead volume
when used as a union even if the
tubing is made up in the filter with a
longer, non-standard pilot length.
An arrow imprinted on all filter bodies
serves to differentiate them from
unions and to indicate recommended
flow direction.
CHROMalytic TECHnology Pty Ltd AUSTRALIAN Distributors e-mail:
Tel: 03 9762 2034
