EPM
Out-of-Stack Diluter Seal Upgrade
To Eliminate Leakage and Sample Contamination
(continued)
PROVEN
SOLUTION
Occasionally
we are asked to convert the "S" Series OOS back
to the original configuration (using Kalrez® O-ring seal)
to resolve these issues. Although this is indeed possible,
the costs for modifications and the need for us to have the
entire OOS Sampler at our shop to do the conversion makes
this approach impractical and undesirable to the end user.
To resolve these issues, a very simple and low cost OOS upgrade
has been implemented that has been well received and proven
effective. In general, the upgrade consists of eliminating
the 3/4" SS ferrule configuration and changing it to
a 3/4" graphite ferrule configuration. The advantages
to this upgrade are as follows:
Easy to tighten knurled nut
Leak-tight seal at junction of diluter tip and inner flange
assembly
Operating temperature of up to 750°F (400°C) remains
the same
Quick and easy ferrule change out during scheduled maintenance
Possibility of knurled nut cross-threading to inner flange
assembly eliminated
Diluter section and knurled nut is all that we need to perform
the upgrade
Minimal downtime when using one of our diluters while yours
is out for upgrade
Scope of work:
Simply send us the diluter section and knurled
nut from your OOS Sampler. Be sure to let us know if you will
need a loaner unit while your equipment is out for upgrade.
We will remove the 3/4" Swagelok® nut and ferrules
from the diluter tip, and inspect the diluter tip. The existing
diluter tip can be reused if it is free of any major channels
or deformation that had resulted from the stainless steel
ferrule configuration. If the diluter tip cannot be reused,
we will provide a quote for the tip replacement.
The
diluter will then go through our standard cleanup service.
This consists of external and internal aspirator cleaning
cycle and aspirator performance testing (test certificate
with performance data is provided).
The
internal threads of the knurled nut will be removed. This
will eliminate the possibility of cross-threading to the inner
flange assembly. The threads of the knurled nut were originally
intended to retain the piece onto the inner flange assembly
during diluter removal, they serve no other purpose.
A
new 3/4" SS nut (modified) will be supplied with the
upgraded diluter, along with a package of 5ea. graphite ferrules.
Please
contact us for more information or pricing, and refer to our
service code "SRVC-PRB-B2". If your systems is down
for scheduled maintenance, consider sending in the entire
unit for a "Full Service" (reference our service
code "SRVC-PRB-B").
Get a Service Quote ...
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