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UNDER
PRESSURE LEAK SEALING SERVICE
What
is under pressure leak sealing
It’s
exactly what it says. It is the process of sealing pressurized
leaks while under continuous pressure to avoid costly shut
downs or unscheduled maintenance.
What
kind of leaks can be sealed using this technology
Just
about any kind of leak can be sealed using this process
with pressures rating up to 7500 psig and temperatures ranging
from cryogenic to 1800 degrees Fahrenheit. Also under pressure
leak sealing works great for sealing vacuum leaks.
What
are some typical applications for under pressure leak sealing
There
are many different applications for which this process is
used but the most common are as follows:
Valve Packings
This
is the most common application for under pressure leak
sealing services for many reasons. These valve packings
leaks can be repacked on-line very quickly and economically
without shutdown or having to isolate the valve itself.
The sealant used to seal these leaks is very similar
to the original packing material supplied from the valve
manufacturer and will never harden or ruin the valve.
Some common applications for these valve-packing repairs
are steam, superheated steam, water, condensate, chemical,
vacuum, air, or most any process. If you have any questions
about your packing leaks please call the Colt information
center at 1-800-229-2658 for more information.
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Flange
Leak
Flange
leaks are an unfortunate common appearance in
many facilities and can be easily sealed using
the under pressure leak sealing technology. They’re
many different ways to achieving a seal on a flange
depending on the gap of the flange and also temperature
and pressure. Due to the fact the most all flanges
are built to standard sizes a two-piece flange
clamp can be installed and then injected to seal
your leak.
Colt
stocks these standard size flange clamps for
flanges rated 150#, 300#, and also 600# with
sizes including ½” thru 24”
on the shelf. If you have a flange that is leaking
over 24” in size, measurements can be taken
and a flange clamp can be built in less than
24 hours in most cases.
Another
way to seal a flange leak is to perform a wire
wrap technique. This process is great for low-pressure
leaks and also more of a short-term fix. Basically
a wire in put into the place of the gap of the
flange and then sealant is injected into the
void between the original gasket and the installed
piece of wire. If you have any questions about
your leaking flange call the Colt information
center at 1-800-229-2658 for more information.
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90 Or 45 Degree
Elbow Leaks
Another
common appearance for many facilities some time
or another is leaking elbows. Nonetheless
these elbows take a lot of abuse and eventually
wear out in many cases. These elbow leaks are
a simple fix just requiring a Colt manufactured
elbow enclosure to ensure a 100% seal. These
elbow enclosures are made to the standard pipe
sizes and are made in both short radius and
long radius for the 90 Degree applications.
Once the enclosures are installed they are injected
to perform a 100% guaranteed seal. Colt stocks
these standard size elbow enclosures up to 24”
in size. These enclosures can also have either
a perimeter seal or a Injectable seal depending
on the requirements. If you have any questions
about your leaking elbows please call the Colt
information center at 1-800-229-2658 for more
information.
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Weld Leaks / Pinholes
Yet
another common appearance for many facilities
is Weld Leaks or Pinhole leaks. These leaks
can usually start off small but usually get
worse very rapidly. Using a Colt manufactured
straight-line enclosure can easily repair these
leaks. These enclosures are manufactured to
the various pipe sizes and can be installed
and injected very quickly to avoid further problems.
As you can see below these straight-line enclosures
are great for many different applications with
the same enclosure. One of these enclosures
can be used for a straight line, 90 Degree elbow,
a “T” or a one bore application, just
by changing out the middle inserts. We call
these interchangeable enclosures MME enclosures.
The MME enclosures are good up to 2” pipe
and then we move on to our more traditional,
standard enclosures.
If you have any questions about your weld leaks
/ pinhole leaks please call the Colt information
center at 1-800-229-2658 for more information.
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Line
Kills for Bypassing Valves
A
line kill is a perfect solution for valves that
won’t seat properly and you must have all
flow stopped. Sealant is injected into the seat
of the valve to provide a safe seal and to stop
the flow. The sealant will remain in the systems
and is usually caught in a drain if the valve
is opened again. A line kill is a great alternative
to isolating or even shutting down the system
if needed. If you have any questions about your
bypassing valves please call the Colt information
center at 1-800-229-2658 for more information.
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All Other Applications
There
are many other applications that under pressure
leak sealing works great
on but these are just the most common. If you
think you might have an application that could
be sealed on-line
please call the Colt information center at 1-800-229-2658
or E-Mail to colt@coltonline.com
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