CAUTION!
Uncontrolled flow of feed chemical
Feed chemicals can leak through the metering pump in an
uncontrolled manner in the event of excessive priming pres‐
sure.
–
Do not exceed the maximum permissible priming pres‐
sure for the metering pump.
Align the pipes so that the metering pump and the liquid end
can be removed from the side if necessary.
1.
Cut off the ends of the hoses at right angles.
2.
Pull the union nut (2) and clamp ring (3) over the hose (1) - see
3.
Push the hose end (1) up to the stop over the nozzle (4) and widen,
if necessary.
Ensure that the O-ring and flat seal (5) is properly
fitted to the valve (6).
Never re-use used PTFE seals. An installation sealed
in this way is not watertight.
This type of seal is permanently distorted when sub‐
jected to pressure.
In order to enable it to be distinguished from the
EPDM flat seal, the FPM flat seal PV design has a dot.
4.
Place the hose (1) with the nozzle (4) onto the valve (6).
5.
Clamp the hose connector: Tighten the union nut (2) while simulta‐
neously pressing on the hose (1).
6.
Re-tighten the hose connector: Pull on the hose (1) briefly, which is
fastened to the dosing head and then tighten the union nut (2) once
more.
Installing hose lines - PP, NP, PV, TT
designs
Installation, hydraulic
29
