How our hot oil hydro testing works
We use one of our oil dehydration and conditioning units to
continuously pump the oil through all the hoses or tubing at 45
GPM
and maintain the temperature at a steady 150 degree F while the
direction of flow of the oil is being alternated. Periodically
we pull
a sample from the oil and analyze it using our onsite oil lab.
Once the oil that is flushing the hoses out has reached the
clients desired cleanliness level we then shut off the flow and
while the hoses and or tubing is still hot we pump up the
pressure to a maximum of 200% of the materials working pressure
and hold it for the time required by the client.
Often we use the oil that will be used to fill the system after
the hoses and tubing are re installed. This provides a further
advantage
for the system oil is dehydrated and cleaned to the desired ISO
levels prior to being pumped back into the hydraulic system.
Advantages of using Hot Filtered Hydraulic Oil verses using
ambient temperature tap water
The hot oil
is pumped through the hose at 45 gallons per minute in both
directions to dislodge contaminates in the
hose or tube and
carry them to the system filters
The combination of testing above normal operating
temperature and pressure ensured the hose is constructed
correctly and will hold up to the requirements of the system
for the desired lifespan with an absolute minimum
chance of
failure
The hose or tube will not contaminate the system with
rubber or metal particles from construction
When the oil to be used in the system is the flushing
medium, both the oil and the assemblies are cleaned prior
to
being installed in the hydraulic system
The chance of “creeping leaks” that tend not to show up
using tap water to test with but then show up
after the
completion of the work or even weeks later are greatly
minimized
Pulling oil samples and analyzing them on location allows
the client to be sure that the job is being done right
Overview of onsite Hydro Testing using Hot Filtered Hydraulic
Oil
Temperature
range, up to 200F or the maximum allowable temperature of
the materials
Flow rate, 45 GPM constant
Can direction of flow be alternated? Yes
Can the systems own hydraulic oil be used for hydro
testing? Yes However maximum temperature is 150 degrees
F to
prevent damaged to detergents and additives of the oil
System can remove down to 2 micron size particles, 5
micron filtration is typical
Benefits of flushing hydraulic and lube oil systems
Removes
contaminates from hoses, piping and valve bodies
Using the hot oil flush removes moisture from hoses and
tubing
Helps prevent corrosion of hydraulic system
Extends the life of the system
By also conditioning the “old oil” saves the cost of oil
replacement
QC & QA
Considerations
Provides
functional, visual and documented verification that material
will perform as required under working conditions
Oil Analyses reports provide lab quality verification of
the removal of contaminates
Exceeds both temperature and pressure working requirements
of material by non destructive testing
Maintains system ISO or cleanliness levels required for
system
Extends the life of the equipments hydraulic system
Reduces overall repair and replacements costs
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