JETStream 3000 series, Operation Manual, Page: 33 / 84

Bareshaft Pump
25
PRESSURE CONVERSION
The versatility of the Jetstream waterblast pump
allows operators to modify the pump to change to
different operating pressure ranges when necessary.
There are three ranges of pressure usually referred
to as 15K, 20K, and 40K. These are abbreviated
names to easily denote the maximum operating
pressure.
• The 15K fluid end can operate up to 15,000 psi
(1034 bar).
• The 20K fluid end can operate up to 20,000 psi
(1379 bar).
• The 40K fluid end can operate up to 40,000 psi
(2758 bar).
When converting a fluid end to a different pressure,
it is necessary to exchange the stuffing boxes and
manifold with the proper components for the new
operating pressure.
Converting a Pump
Use the following procedure to convert a pump to a
different pressure.
1. Relieve pressure from the pump, shut off the
engine, and disengage the clutch.
2. Turn off the water supply, drain the water tank.
3. Remove the two bolts that secure the hy-
dro-throttle switch aluminum housing (Figure
20) to the brass cartridge in the manifold.
Remove the switch and housing and set aside.
4. Disconnect the bypass drain hose and the
supply coupling from the manifold (Figure 21).
5. Open the rod box cover and disconnect the
lubrication lines from the stuffing box fittings
(Figure 22).
WARNING
!
When switching to higher operating pressures, it
is necessary that all equipment be properly pres-
sure rated. Refer to the Jetstream Safety Manual
for specific guidelines for hoses, fittings, etc.
Hydro-Throttle
Switch
Figure 20: Hydro-Throttle Switch.
Bypass Hose
Supply Coupling
Figure 21: Line Removal.
Cover
Lubrication
Lines
Figure 22: Disconnecting Lubrication Lines.