Suction Line; Filtration - Pratissoli KS Serie Manual De Uso Y Mantenimiento

For any supply conditions other than those specified
above, contact our Technical or Customer Service
Departments.
9.6

Suction line

For smooth operation of the pump, the suction line must have
the following characteristics:
1. Minimum internal diameter as indicated in the graph in
par. 9.9 and in any case equal to or exceeding that of the
pump head.
Localized restrictions should be avoided along the
piping, as these can cause pressure drops resulting
in cavitation. Avoid 90° elbows, connections
with other piping, restrictions, reverse gradients,
inverted U-curves and Tee connections.
2. The layout must be such as to prevent cavitation problems.
3. Completely airtight and constructed to ensure a perfectly
hermetic seal through time.
9.7

Filtration

Two filters must be installed on the pump suction line, positioned as indicated in Fig. 7 and Fig. 7/a.
With a manually activated control valve
Inlet
Supply tank
With pneumatic control valve
Inlet
Supply tank
4. Prevent the pump from emptying when it is stopped,
5. Do not use 3 or 4-way hydraulic fittings, adapters, swivel
6. Do not install Venturi tubes or injectors for detergent
7. Avoid use of foot valves or other types of unidirectional
8. Do not recirculate the by-pass valve drain directly to the
9. Provide for proper guards inside the tank to prevent that
10. Make sure the suction line is thoroughly clean inside
Bypass
1 Filter 1
2 Booster Pump
3 Filter 2
4 Pressure gauge
Bypass
39
including partial emptying.
joints, etc. as they could jeopardize pump performance.
suction.
valves.
suction line.
water flow from the bypass and the tank supply line can
create vortexes or turbulence near the pump supply pipe
port.
before connecting it to the pump.
1 Filter 1
2 Booster Pump
3 Filter 2
4 Pressure gauge
5 Pressure switch
5 Pressure switch
6 Plunger pump
7 Pressure gauge
8 Safety valve
6 Plunger pump
7 Pressure gauge
8 Safety valve
9 Accumulator
10 Control valve
Fig. 7
9 Accumulator
10 Pneumatic control
valve
Fig. 7/a