Specifications

HOSES &
LANCES
Copyright Jetstream of Houston, LLP © 2011
Effective 2/2011
Jetstream of Houston, LLP
Phone: US & Canada: 800-231-8192 or 832-590-1300
Web Site: www.waterblast.com
HOSES & LANCES
UP TO 15,000 PSI (1000 BAR)
PRESSURE DROP DATA
D-12
The charts on this page and the next are used to approxi-
mate how much pressure will be lost through a particular
hose or lance at a given flow rate. Because of frictional
forces, the water exiting a hose or lance could be at a
significantly lower pressure than at entry. In some cases,
especially when using smaller hoses and lances, the flow
rate that can be used is determined by pressure drop
through a lance rather than the pump’s maximum output.
PRESSURE DROP & NOZZLE SIZING
Pressure drop is especially important to understand when sizing nozzles.
Use the following procedure for correct nozzle sizing:
1. Determine the pressure needed for a particular cleaning operation
and subtract that amount from the desired pump operating pressure.
The result is the permissible pressure drop.
2. Consult pressure drop chart for the hose to be used to determine
what flow rate will result in the permissible pressure drop.
3a. If this flow rate exceeds the maximum flow of the pump, use the
chart to find the pressure drop at the maximum pump flow and
subtract that amount from the desired pump operating pressure to
get the pressure at the nozzle. Then use the flow charts provided for
the desired nozzle to select a nozzle, or nozzles, matching the
desired flow and pressure.
3b. If this flow rate is within the capability of the pump, use the flow
charts provided for the desired nozzle to select a nozzle, or nozzles,
matching the desired flow and pressure.
Note: Doubling the length of a hose or lance will result in approximately
twice the pressure drop at the same flow rate.
0
200
400
600
800
1000
0 10 20 30 40 50 60 70 80 90 100 110 120
Flow Rate (gpm)
Pressure Drop (psi)
50'
25'
100'
200'
1/2" RUBBER WATERBLAST HOSE
Series 25513 & 52241
0
1000
2000
3000
4000
5000
6000
7000
8000
0 10 20 30 40 50 60 70 80 90 100
Flow Rate (gpm)
Pressure Drop (psi)
50'
25'
100'
3/4" RUBBER WATERBLAST HOSE
Series 51118
0
1000
2000
3000
4000
0 10 20 30 40 50 60 70 80 90 100 110 120
Flow Rate (gpm)
Pressure Drop (psi)
50'
25'
100'
200'
1" RUBBER WATERBLAST HOSE
Series 53235