Controllable Piston Diaphragm Pumps

are leak-free oscillating displacement pumps designed for the dosing of volumes up to 1500 l/h and up to maximum 50 bar - depending on flow capacity.

They are an ideal combination of the high supply pressure of a piston pump and the perfect leak-proof diaphragm pump.
Field of application:
Flow free mediums with:
Performance characteristics:
C409.2...KM
A suitable material is available for each dosing medium!
Appropriate materials are selected for valves, ball valves, valve seals and diaphragms.

The electronics make possible: proportional dosing via analogue signals 0/4 ... 20 mA or contact signal with the option of impulse partitioning or impulse multiplication.

An integrated LCD display and four LEDs give information about the actual status in operational mode, when empty,when diaphragm rupture occurs and when there are multiple faults.

A connection for a relief valve and a „pump empty“ display with beginning and end contact is standard equipment. As an option the dosing pump can be constructed with a diaphragm rupture signal.
Drive motor with single-phase alternating current.
C409.2KM
Available designs of the pump type C409.2-...KM









sera is certified
by DIN ISO 9001
sera is certified by DIN ISO 9001
Type Nominal capacity (50Hz)
Nominal capacity (60Hz)
C409.2-7.5KM 7.5 l/h 9 l/h
C409.2-10KM
10 l/h 12 l/h
C409.2-12KM
12 l/h 14.4 l/h
C409.2-18KM
18 l/h 21 l/h
C409.2-30KM
30 l/h 36 l/h
C409.2-45KM 45 l/h 54 l/h
C409.2-70KM
70 l/h 84 l/h
C409.2-95KM
95 l/h 114 l/h
C409.2-135KM
135 l/h 162 l/h
C409.2-190KM
190 l/h --------
aggressive
abrasive
viscous
radioactive
flammable
or toxic characteristics
Leakage free
Highest dosing accuracy
Dry run safety
High quality materials
Continuous operation with minimum maintenance
Long operating life
Easy to operate
Integrated safety device against over pressure
Micro-processor controlled
Controlled by standard or digital signals
Dosing monitoring
Level input
German Dosing Experties

Middle East & North Africa