ProMinent delta General Operating Instructions page 9

System components
Metering pump* A
Injection valve* B
Shut-off valves C
Pulsation dampener D
Back pressure valve* E
Multifunctional valve* F
Relief valve*
Level switch G
Foot valve* H
Manometer I
(general pressure measuring
device)
Function
Metering a defined volume in liquid into
a system. Control: manual or automatic
(external signal)
Non-return valve
(Vacuum breaker)
As a back pressure generator
To split the pipe system into sections
(functional sections)
Smooths out pulsation in the pipe (dis‐
charge side), generates a low-pulsation
flow
Generates a defined back pressure
(configurable)
Generates a defined back pressure
Prevents through-suction
Priming aid
Relief device for the discharge line
Opens up a relief line when a pressure
limit value is set
Opens up a relief line when a pressure
limit value is set
Signals the liquid level of the storage
tank
(two-stage design (with pre-warning) or
single-stage)
Non-return valve (vacuum breaker)
With filter meshes as a coarse filter
Displays the actual pressure, for
example at the pressure connector of
the metering pump
Installation, hydraulic
Use
Perfect adaptation to metering tasks is
possible thanks to the variably adjustable
metering volume and external control
options.
... with closed pipe systems to prevent
backflow and mixing with the discharge
line.
... for use with pipe systems with a free
outlet, to generate a defined back pres‐
sure.
... for maintenance, renovation or repair
work to shut down parts of the system.
... for use with long pipes to minimise pres‐
sure loss.
... to generate continuous flow/metering.
... to avoid disruptive pipe vibrations.
... for use with pipe systems with a free
outlet, to guarantee the correct operation of
the metering pump.
... when using a pulsation dampener
... for use with pipe systems with a free
outlet, to guarantee the correct operation of
the metering pump.
... with a positive pressure difference
between the suction line and discharge
line.
... when operating the pump against pres‐
sure.
... e.g. for repairs
...as a safety device to protect the metering
system from overloading by the metering
pump.
...as a safety device to protect the metering
system from overloading by the metering
pump.
...for the correct operation of the system.
...to display a pending change of tank or fill
the storage tank.
...to protect the metering system from
sucking dry.
... to protect the suction line from running
dry (e.g. when changing tanks).
...to protect the metering pump from coarse
particles of solids.
...to determine the actual operating pres‐
sure in the discharge line.
...crucial to adjust the back pressure valve
or relief valve.
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