Electromagnetic diaphragm

CK series

Electromagnetic diaphragm metering pump, up to 17 L/h at up to 10 bar

CK series: electromagnetic diaphragm metering pumps for accurate, repeatable dosing of chemicals and additives. 14 models from 3 to 17 L/h, with pressure up to 10 bar. Pump-head and diaphragm materials are chosen for your liquid; send us the chemical, concentration and temperature and we will confirm the right head.

CKS: manual control series, flow set by potentiometer knob (CK07, CK12, CK17)
CKZ: automatic control series with liquid-level chain stop, remote start/stop, power-off memory, 4–20 mA analog flow control; multi-function outlet valve (start-up exhaust, pressure relief, anti-siphoning)
CKZ07/12/17 add multi-language interface, running-signal output, flow-unit switching, manual calibration, high-temperature protection, 220/110 V switching and external pulse proportional or batch dosing (DC 24 V / 12 V)

View 14 models

Flow: 3–17 L/h
Pressure: up to 10 bar
Models: 14

Sizes

The 14 models of the CK series range grouped by type. Open the Models tab for every model with its performance data.

Type	Flow range	Pressure	Motor	Models
CKS	3–17 L/h	1–10 bar	20–40 W	7
CKZ	3–17 L/h	1–10 bar	20–40 W	7

Models

Filter by duty point, mains frequency or size. Click a model for its performance curve and data.

Model table (PDF)

Model	Series	Flow L/h	Pressure bar	Strokes/min	Motor W	Plunger mm
CKS17	CKS	17	1	300	40	—	Details
CKZ17	CKZ	17	1	300	40	—	Details
CKS12	CKS	12	5	300	40	—	Details
CKZ12	CKZ	12	5	300	40	—	Details
CKS07	CKS	8	10	300	40	—	Details
CKZ07	CKZ	8	10	300	40	—	Details
CKS09	CKS	9	2	160	20	—	Details
CKZ09	CKZ	9	2	160	20	—	Details
CKS05	CKS	5	5	160	20	—	Details
CKZ05	CKZ	5	5	160	20	—	Details
CKS04	CKS	4	8	160	20	—	Details
CKZ04	CKZ	4	8	160	20	—	Details
CKS03	CKS	3	10	160	20	—	Details
CKZ03	CKZ	3	10	160	20	—	Details

Performance range

Every model of the CK series range by flow and pressure. Click a line or dot to open that model with its full data.

Logarithmic scales. Published catalogue data for clean water; the correct model for your duty is confirmed by our engineers.

Spare parts for CK series

Typical wear and service parts for this type of pump. The exact part, material and part number depend on the model, so send us the model code (or a nameplate photo) and we confirm and quote the right one.

Request spare parts quote

Part	What it does
Diaphragm	The flexing membrane that moves the liquid; replaced at the service interval
Check valves (suction and discharge)	Valve balls, seats and springs that give one-way flow
Pump head	Liquid end in the material suited to the chemical
Gaskets and O-rings	Seal the head, valves and connections
Hydraulic oil and relief / bleed valve	Hydraulic diaphragm types only: transmits the stroke and protects against over-pressure
Stroke adjuster and motor	Sets the flow rate and drives the pump

Generic list for this pump type; it is not a part-number catalogue for the series. Our team confirms the correct part for your model before quoting.

Specification & options

Key parameters

Max flow rate17 L/h
Max pressure10 bar
Adjustment range10–100 %, accuracy ±2 %
Power supply220 VAC / 110 VA, 50 Hz, single-phase
Max suction lift1.2 m water column

Connections

Code	Description
R	Hose connector (PVC hose 4×6, PE hose 4×6 or 4F hose 4×6)

Fluid end and materials

Fluid end	Valve body	Valve seat	Valve ball	Diaphragm	Seal ring
PVC	PVDF	EPDM/FPM/4F	Zirconia	PTFE	FPM/EPDM
PVDF	PVDF	EPDM/FPM/4F	Zirconia	PTFE	FPM/EPDM

Technical data

Typical applications

Oil
chemical industry
electric power
metallurgy
mining
shipbuilding
light industry
agriculture

Data basis

CNP metering pump selection manual, printed pp. 23–24

Performance values are taken from the published CNP catalogue data. Our engineers confirm the final selection for your liquid, temperature, supply and site before quoting.