6
version
MAX Temperature (°C / °F)
MAX Temperature (°C / °F)
Zone 1 (atex)
Zone 2 (atex)
WR
60°C / 140°F
60°C /140°F
FC
80°C / 176°F
90°C / 194°F
DF
NA
90°C / 194°F
SS
80°C / 176°F
95°C / 203°F
AL
80°C / 176°F
95°C / 203°F
SP
80°C / 176°F
95°C / 203°F
Version
MAX ΔT (°C / °F)
WR
0÷40°C / 14÷104°F
FC
0÷40°C / 14÷104°F
DF
0÷40°C / 14÷104°F
SS
0÷40°C / 14÷104°F
AL
0÷40°C / 14÷104°F
SP
0÷40°C / 14÷104°F
GENERAL NOTES
The”PDA” dampeners are accessories for the AODD pump and have used for dampen the variations in flow and pres
-
sure in the AODD pump discharge.
The dampener performances (flow rate, head, and minimum pressure) are decided in the ordering phase and indicated
on the nameplate
Make sure that the physical-chemical characteristics of the fluid have been correctly evaluated
The maximum temperature referred to water in continuous operation depends on the version of the materials (indicated
on the nameplate) and on the environment in which the pump will be installed:
The ambient temperature interval is related to the choice of materials (specified on the identification plate):
OPERATING PRINCIPLE
The damper consists of two chambers separated by diaphragm. A chamber is connected to the pump outlet and the
second is charged or discharged of air.
The pressure that the pumped liquid exerts on the wet side of thediaphragm deforms the same. This deformation moves
a probe that control the pneumatic valve that charging or discharging air as a function of the position assumed by the
probe. The head frequency and capacity are automatically adjusted without any intervention or set up according to the
actual product circuit requirements
