HYDAC FILTER SYSTEMS LVU-CD-10, Инструкция по эксплуатации и техническому обслуживанию, Страница: 32 / 68

Unit setup/connection
LVU-CD-10
en(us)
Page 32 / 68
BeWa LVU-CD-10 StdPrm 3993633a en-us 2015-08-26.doc 2015-08-26
Notes on pipes / hosing
Make sure that no vibrations or stress/loading from other machinery and
equipment are carried over to filter housing. If necessary, use expansion
joints.
The pressure loss in a hydraulic line depends upon:

Flow rate

Kinematic viscosity

Pipe dimensions

Fluid density
The pressure loss can be estimated for hydraulic oils as follows:
∆ p ≈ 6.8 * L / d
4
* Q * V * D
∆
p
= Pressure differential in [bar]
L = Pipe length [m]
d = Internal pipe diameter [mm]
Q = Flow rate [l/min]
V = Kinematic viscosity [mm²/s]
D = Density [kg/dm³] Diesel has a density of approx. 0.84 kg/dm³
This applies to straight pipelines and hydraulic oils. Additional threaded
connections and pipe bends increase the pressure differential.
Keep the height difference between the pump and the oil level in the tank as
low as possible.
Constrictions in the connections and lines should be avoided. This could
compromise suction output and cause cavitation .
Take note that the nominal size of the connected hoses/piping must be at
least as large as the inlet port sizes.
Make sure that no vibrations or stresses are carried over to filtration unit
when connecting the piping. Use hoses or expansion joints if necessary.