CAUTION!
Uncontrolled flow of feed chemical
The feed chemical can leak through the metering
pump in an uncontrolled manner in the event of
excessive priming pressure.
–
Do not exceed the maximum permissible pri‐
ming pressure for the metering pump.
INFORMATION: Align the lines so that the metering pump and the
liquid end can simply 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 Fig. 9.
3. Push the hose end (1) up to the stop over the nozzle (4) and
widen, if necessary.
INFORMATION: Ensure that the O-ring or the flat seal (5) is
sitting properly in the valve (6).
INFORMATION: Never re-use used PTFE seals. An installa‐
tion sealed in this way is not leak-tight. This type of seal is
permanently distorted when subjected to pressure.
4. Place the hose (1) with the nozzle (4) onto the valve (6).
5. Clamp the hose connector: tighten the union nut (2) while
simultaneously pressing on the hose (1).
6. Re-tighten the hose connector: pull briefly on the hose line
(1), which is fastened to the dosing head and then re-tighten
the union nut (2).
1 Hose
2 Union nut
3 Clamp ring
4 Nozzle
5 O-ring or flat seal
6 Valve
1. Push the union nut (2) and clamp rings (3, 4) over the pipe
(1) with approx. 10 mm overhang - see
Fig. 10.
2. Insert the pipe (1) up to the stop in the valve (5) and then
withdraw 1...2 mm.
3. Tighten the union nut (2).
Installing hose lines - NPT, PVT
designs
Fig. 9: NPT, PVT designs
Installing stainless steel pipes - SST
design
Installation, hydraulic
32
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