CLEAN EFFECTIVELY USING THE RIGHT FLOW & PRESSURE
Flow (measured in LPM) is a vital component of the drain and sewer cleaning process. Lower flows generated by a pump are generally used to clean smaller diameter pipes, and flow typically increases as the diameter of pipe increases. Conversely, pressures generated by the tool (measured in PSI or Bar) are usually higher when cleaning smaller diameter pipes, and pressure usually decreases as the diameter of the pipe increases.
The table below shows a general guideline for flow and pressure combinations and maximum flows per hose size.
|
DIAMETER
|
PRESSURE
|
MAX.FLOW
|
|
.50” Hose
|
4,000 PSI (276 bar)
|
<=115 LPM
|
|
.75” Hose
|
3,000 PSI (207 bar)
|
<=275 LPM
|
|
1.0” Hose
|
3,000 PSI (207 bar)
|
<=365 LPM
|
|
1.25” Hose
|
2,000 PSI (138 bar)
|
<=570 LPM
|
|
1.50” Hose
|
2,000 PSI (138 bar)
|
<=820 LPM
|
Plastic or rubber hose will have different weights per metre and fraction coeffcients. As the table above suggests, hose of a certain diameter has a finite range of efficient operation. Failure to follow these guidelines may result in significant pressure losses at the nozzle or cleaning tool.
The details above are a general guideline, individual client needs may vary. Kerrick has trained staff on board who specialise in drain and sewer equipment, so if you have any queries or need to advice on what hose, tools and pressures work well together give us a call on 0800 253 774 or drop into your local branch.