CAUTION!
Hazardous feed chemicals can escape
Hazardous or extremely aggressive feed chemicals
can escape outside when using conventional
degassing procedures with metering pumps.
– Install a degassing line with a return line into
the supply tank.
CAUTION!
Hazardous feed chemicals can escape
Hazardous or extremely aggressive feed chemicals
can escape outside in the event that the metering
pump is removed from the installation.
– Install a shut-off valve on the discharge and
suction side of the metering pump.
CAUTION!
Uncontrolled flow of feed chemical
Feed chemical may press through a stopped
metering pump if there is back pressure.
– Use an injection valve or a vacuum breaker.
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: Arrange the pipes so that the metering pump and
the liquid end can be removed to 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) -
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.
INFORMATION: The FPM flat seal PV design has a dot to
distinguish it from the EPDM flat seal.
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).
Installing hose lines - PP, NP, PV, TT
designs
Installation, hydraulic
24
