Hydraulic installation
Hydraulic accessories
23
© Lutz-Jesco GmbH 2014
Subject to technical changes.
140327
Solenoid-Diaphragm Dosing Pump
MAGDOS LP
Operating Instructions
BA-10231-02-V03
8.7.6 Back-pressure valve
Back-pressure valves are necessary if:
there are considerably fluctuating system pressures,
the pressure on the suction side is higher than on the discharge side
or if you intend to carry out dosing into depressurized lines.
In cases like this, if you do not use a back-pressure valve, imprecise
dosing results will occur or overloading will result. The back-pressure
valve solves these problems by generating a defined, constant back
pressure.
In some circumstances, a back-pressure valve is unnecessary if you use
a hose injection nozzle and if the back pressure that it generates is
adequate.
Fig. 8-14: Installation with a back-pressure valve
No.
Description
Main line
Injection nozzle with shut-off valve
Back-pressure valve
Pressure relief valve
Chemical tank
Pressure line
MAGDOS LP dosing pump
Wall bracket
Shutoff valve
Suction line
Table 8-3:
Designation of components
Содержание MAGDOS LP
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