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LEAK STOPPING WITH A NEGATIVE PRESSURE SYSTEM
The reason that fluid leaks out from inside of a
mold is because the pressure of the fluid inside is greater than the
pressure of the air outside. If you had a small hole on a
hose, for example, and the pressure of the air pushing in on it was
strong enough, it would keep the fluid inside the hose. Since
it is impractical to increase the pressure of the atmosphere, a
Logic Corporation unit provides a way to decrease the pressure of
the fluid to the point where the air holds it in. When using a
"Leak Stopper", the fluid is pulled through a mold to lower
pressure. In all other circulating systems the fluid is pushed
through, which increases pressure. Regulating the fluid
pressure to a mold does not necessarily reduce the fluid flow.
Because Logic Corporation's unit draws a vacuum on the "FROM
MOLD" line, the over-all pressure drop remains the same or even
increases. This means that there is no loss of cooling flow
and in some cases it may even be improved.
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