32
Section 2 - Components
When storing hoses, they should be neatly coiled.
Place the hoses in a safe location to keep them
clean and reduce the possibility for damage and
deterioration. Covering exposed fittings with tape
or plastic covers designed for this purpose will
protect the fittings and reduce the possibility for
dirt to enter the fittings and hoses.
UHP Hoses, Connections and Fittings
Waterblasting systems operate at ultra high
pressures of up to 40,000 PSI (2,758 Bar).
Therefore, it is critical that the operator and
maintenance personnel inspect the high pressure
hoses, fittings, nozzles and other components
frequently.
A visual inspection of the high pressure system
should be conducted each day before each shift.
Any hose or component that is questionable or
shows any sign of deterioration, wear or leakage
should be replaced immediately and before
operating any waterblasting equipment. A more
thorough inspection of the high pressure pumps
and components should be conducted at each
routine service interval.
Check the condition of threads prior to connecting
any fittings or hoses. Use an anti-seize compound
on all fitting and hose threads to prevent “galling.”
Galling is the term for thread damage that occurs
from heat build up in the threads of stainless steel
fittings as they are tightened. Galling will destroy
the threads and lockup the fittings before they
are tight, destroying the fittings and/or hose ends
rendering them unusable. Be careful not to get
anti-seize on the seating area of any fitting.
When connecting UHP hoses, always make sure
the fittings and hoses are clean before making
the connection. Dirty connectors and hoses are
a major cause of clogged or damaged nozzles.
After the hoses are connected to the high pressure
control valve and the Ground Hog, always remove
the spray bar and purge the system as described
in this manual.
Always test the system following repairs or at the
start of each shift by operating the system at low
pressure first. Then slowly bring the equipment up
to operating pressure while carefully monitoring
the replaced components.
UHP Pump To Ground Hog Hose Connection & Fittings
UHP Control Valve To Thru-Shaft Pump
Hose Connection & Fittings
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