FluidAqua Mobil - FAM 10
FAM Set-up and Connection
HYDAC FILTER SYSTEMS GMBH
en(us)
Page 31 / 72
BEWA FAM10 3102456f en-us 2012-03-13.doc
2012-03-13
The pressure loss in straight pipes (
P
(line)
) can be calculated as follows:
Δ
p ~ 6,8 * L / d
4
* Q * V * D
Δ
p = Pressure differential in [bar]
L
= pipe length [m]
d
= internal pipe diameter [mm]
Q
= Flow rate [l/min]
V
= kinematics viscosity [mm²/s]
D
= Density [kg/dm³]
Mineral oil based hydraulic fluid has a density of
~
0.9 kg/dm³.
The density (D) is:
Mineral hydraulic oil HLP
0.85 … 0.90
kg / dm³
Phosphate ester HFDR
1.00 … 1.10
kg / dm³
Insulating oil
0.90 … 1.00
kg / dm³
Lubrication oil
0.90 … 0.95
kg / dm³
Additional threaded connections and pipe bends increase the pressure differential
and must be taken into account.
Keep the height difference between the pump and the oil level in the tank as low as
possible.
Avoid constrictions in the connected hoses. They compromise output and increase
the risk of cavitation.
Make sure that no tension or vibrations are carried over to the pump or filter housing
when the pipes are connected. Use hoses or expansion joints if necessary.
