HPP ELR 128/120 (1275 об/мин) [38/168] Features of the delivery pipes

HPP ELR 122/130 (1500об/мин) [38/168] Features of the delivery pipes
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FEATURES OF THE DELIVERY PIPES
In consideration of the high pressures employed, the delivery pipe must be designed and built with
materials suitable for such working conditions.
The same applies for any accessories installed.
When designing the system take into consideration the pressure drops along the line.
To limit the pulsating loads, typical of piston pumps, install a suitable damper or exible pipe
(minimum 1.5 m long) between the pressure regulator and pump connection.
The accessories listed below must be used on the pumps circuit. Each accessory shall be correctly
dimensioned/rated and meet the requirements of current standards:
Gauge
Safety valve
Pressure regulator valve, manual or automatic
Antipulsation damper
90° CURVES
T” CONNECTIONS
OVERTURNED “U” CURVES
DIAMETER
REDUCTION
VALVE
ACCUMULATOR
PRESSURE GAUGE
SAFETY VALVE
FILTER
PUMP HEAD
BYPASS RECIRCULATION DURING SUCTION
NEGATIVE HEAD
TANK
NO
VALVE
ACCUMULATOR
TANK
PRESSURE GAUGE
SAFETY VALVE
FILTER
PUMP HEAD
TANK WALL
BY-PASS LINE
YES
OUT
BY-PASS
OUT
BY-PASS
Fig. 08

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