KRAL dosing equipment stands for precision and reliability.
Our dosing equipment provides accurate and consistent dosing, which is essential for a wide range of applications. Thanks to state-of-the-art technology and high-quality materials, KRAL metering devices guarantee high metering accuracy and durability, even under demanding conditions. We ensure maximum process stability with every dosing device for volume control.

Our industrial dosing devices are ideal for use in the chemical industry and in many other areas where precise volume control is crucial. In practice, both chemical feeders and solvent feeders are used when controlled processing of critical media is required. For manufacturing companies, we also provide dosing devices for the packaging industry as well as lubricant dispensers and complete oil supply systems .

KRAL metering devices are easy to install and operate, which facilitates integration into existing systems. We also supply customized solutions such as additive metering units, oil metering units, fuel metering units, fuel additive metering units, lubricating oil metering systems, gear metering pumps, liquid pumps and complete liquid metering systems. This enables us to guarantee flexible precision metering for a wide range of industry requirements.

KRAL - Your expert for dosing devices.

"Quality, innovation and speed, at all times and worldwide."

KRAL has positioned itself as a manufacturer of dosing equipment with a fair price/performance ratio since the company was founded. We offer customized dosing systems for plants, from engineering to commissioning, both locally and worldwide. Our After Sales Service is also there for you after the purchase of your industrial dosing systems.

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Advantages of our dosing devices.

Highest precision.
Our dosing devices are characterized by maximum precision. Thanks to advanced technology, the exact amount of liquid is reliably dispensed. This ensures consistent quality and minimizes deviations.

Reliability.
KRAL dosing units are known for their outstanding reliability. They function smoothly even under demanding conditions and ensure trouble-free operation. Our devices have a long service life and require little maintenance.

Energy efficiency.
Our dispensers are designed to be energy-efficient. Thanks to their low energy consumption, they help to reduce operating costs. They also help to reduce the environmental impact.

Flexibility.
KRAL dosing units are versatile and can be easily adapted to different requirements. They can be configured for a wide range of liquids and applications. This makes them an ideal solution for many industries.

Simplicity of integration.
Our dosing devices can be easily integrated into existing systems. They are compatible with various control systems and can be installed quickly. This saves time and reduces downtime during implementation.

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Signal acquisition via the spindle.

During signal detection via the spindle, the edge of the spindle is detected with a pulse generator. Two edges are detected per revolution of the spindle, resulting in two pulses per spindle revolution. As one spindle revolution transports exactly the volume of the measuring chamber, two pulses are generated per measuring chamber volume. This type of signal acquisition is a cost-effective solution for all common consumption and flow measurement applications.

Advantages of our dosing devices at a glance.

Precise dosing.
Consistent quality.
Smooth operation under demanding conditions.
Long service life, low maintenance requirements.
Low energy consumption.
Environmentally friendly.
Adaptable to different requirements.
Ideal for many industries.

Do you have any questions? - We will be happy to help you!

We and our independent sales and service partners are available to you worldwide at any time.
Please contact us by phone or e-mail or use our inquiry form and we will get back to you shortly.

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Areas of application for our dosing devices.

Dosing of resins.

Our dispensers ensure precise and consistent dispensing of resins in a wide range of production processes. Ideal for the production of composite materials, our process feeders ensure consistent mixing and improve product quality. Due to their high accuracy, these metering pumps minimize material waste and optimize the use of resources. Easy integration into existing systems enables seamless production. They are also robust and durable, which reduces operating costs.

Volumetric dosing systems or inline dosing devices can also be flexibly integrated. The simple connection to dosing systems enables seamless production. Specialized dosing solutions for the chemical industry and explosion-proof dosing pumps are also used in the chemical industry. Marine dosing systems and ship dosing devices are available for maritime applications. Our high-precision dosing pumps and screw spindle dosing pumps are particularly robust and durable, which reduces operating costs. As an experienced dosing equipment provider and supplier of dosing equipment, we offer you reliable technology for demanding tasks.

Dosing of colors.

The dosing of colors requires the highest precision in order to achieve consistent color results. Our precision pumps are designed to meet these requirements and enable exact color mixing. They are ideal for the automotive, furniture and packaging industries. Our technology makes production more efficient and maximizes colour accuracy. Precise micro-dosing can also be reliably achieved with our technology. The flow-through dispensers are user-friendly and easy to clean, which reduces maintenance costs.

Hydraulic pumps as shaft lifting pumps.

Our chemical dispensers offer maximum precision and reliability for dispensing adhesives. They ensure uniform and controlled application, which is essential for strong and durable adhesion. Zone 1/Zone 2 dispensing systems and ATEX dispens ers are available for sensitive areas. Especially in the electronics, automotive and construction industries, our dosing pumps are indispensable for the industry. They help to increase production speed and ensure the quality of the end products. They are also extremely economical thanks to their easy handling and maintenance.

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Dosing devices

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Technical data of our hydraulic pumps.

OMP series.

Technical data		OMP-013	OMP-020	OMP-032	OMP-052
Nominal diameter	DN [mm]	15	20	25/32	40
	DN [inch]	1/2	3/4	1	1 1/2
Overall length with DIN flange	[mm]	115	125	180/190	240
Weight with DIN flange	[kg]	4	5	11/13	19
Flow rate I/min	Qmax	900	2.700	9.000	31.500
	Qnenn	600	1.800	6.000	21.000
	Qmin	6	18	60	210
Flow rate I/min	Qmax	15	45	150	525
	Qnenn	10	30	100	350
	Qmin	0,1	0,3	1,0	3,5
Pressure max.	[bar]	40	40	40	40
Temperature	[°C]	-20 - +200	-20 bis +200	-20 - +200	-20 - +200
Viscosity	[mm²/s]	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106
Accuracy	from measured value	±0,1 %	±0,1 %	±0,1 %	±0,1 %
Reproducibility		±0,01 %	±0,01 %	±0,01 %	±0,01 %
K-factor	K [P/I]	1.214,0	321,0	78,0	17,73
Frequency	f at Qnenn [Hz]	202	161	130	104

OME series.

Technical data		OME-013	OME-020	OME-032	OME-052
Nominal diameter	DN [mm]	15	20	25/32	40
	DN [inch]	1/2	3/4	1	1 1/2
Overall length with DIN flange	[mm]	105	135	185	325
Weight with DIN flange	[kg]	2	2	4	12
Flow rate I/h	Qmax	900	2.700	9.000	31.500
	Qnenn	600	1.800	6.000	21.000
	Qmin	6	18	60	210
Flow rate I/min	Qmax	15	45	150	525
	Qnenn	10	30	100	350
	Qmin	0,1	0,3	1,0	3,5
Pressure max.	[bar]	40	40	40	40
Temperature	[°C]	-20 - +125	-20 - +125	-20 - +125	-20 - +125
Viscosity	[mm²/s]	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106
Accuracy	from measured value	±0,1 %	±0,1 %	±0,1 %	±0,1 %
Reproducibility		±0,01 %	±0,01 %	±0,01 %	±0,01 %
K-factor	K [P/I]	1.214,0	321,0	78,0	17,73
Frequency	f at Qnenn [Hz]	202	161	130	104

OMG series.

Technical data		OMG-13	OMG-20	OMG-32	OMG-52	OMG-68	OMG-100	OMG-140
Nominal diameter	DN [mm]	15	20	25/32	40	50	100	150
	DN [inch]	1/2	3/4	1	1 1/2	2	4	6
Overall length with DIN flange	[mm]	145	185	255/265	285	340	460	610
Weight with DIN flange	[Kg]	6	6	13/15	21	31	77	190
Flow rate I/h	Qmax	900	2.700	9.000	31.500	63.000	180.000	450.000
	Qnenn	600	1.800	6.000	21.000	42.000	120.000	300.000
	Qmin	6	18	60	210	420	1.200	3.000
Flow rate I/min	Qmax	15	45	150	525	1.050	3.000	7.500
	Qnenn	10	30	100	350	700	2.000	5.000
	Qmin	0,1	0,3	1,0	3,5	7,0	20	50
Pressure max.	[bar]	250	250	250	160	100	40	40
Temperature	[°C]	-20 - +200	-20 - +200	-20 - +200	-20 - +200	-20 - +200	-20 - +200	-20 - +200
Viscosity	[mm²/s]	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106
Accuracy	from measured value	±0,1 %	±0,1 %	±0,1 %	±0,1 %	±0,1 %	±0,1 %	±0,1 %
Reproducibility		±0,01 %	±0,01 %	±0,01 %	±0,01 %	±0,01 %	±0,01 %	±0,01 %
K-factor	K1 [P/I]	1.216	640	234	71,0	39,8	16,8	8,8
	K2 [P/I]	2.432	1.280	468	142	79,6	33,6	17,7
	K3 [P/I]	7.296	2.560	1.014	302	167	57,6	22,1
	K4 [P/I]	7.296	2.560	1.014	302	167	87,6	45,1
Frequency	f1 at Qnenn [Hz]	203	320	390	414	464	560	738
	f2 at Qnenn [Hz]	405	640	780	828	929	1.120	1.475
	f3 at Qnenn [Hz]	1.216	1.280	1.690	1.760	1.949	1.920	1.842
	f4 at Qnenn [Hz]	1.216	1.280	1.690	1.762	1.948	2.920	3.758

OMH series.

Technische Daten		OMH-013	OMH-020	OMH-032	OMH-052	OMH-068	OMH-0100
Nominal diameter	DN [inch]	1/2	3/4	1	1 1/2	2	4
Overall length with threaded flange G	[mm]	150	185	255	320	385	500
Weight with threaded flange G	[Kg]	7	12	29	55	81	150
Flow rate I/h	Qmax	900	2.700	9.000	31.500	63.000	180.000
	Qnenn	600	1.800	6.000	21.000	42.000	120.000
	Qmin	6	18	60	210	420	1.200
Flow rate I/min	Qmax	15	45	150	525	1.050	3.000
	Qnenn	10	30	100	350	700	2.000
	Qmin	0,1	0,3	1,0	3,5	7,0	20
Pressure max.	[bar]	420	420	420	420	420	250
Temperature	[°C]	-20 - +200	-20 - +200	-20 - +200	-20 - +200	-20 - +200	-20 - +200
Viscosity	[mm²/s]	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106
Accuracy	from measured value	±0,1 %	±0,1 %	±0,1 %	±0,1 %	±0,1 %	±0,1 %
Reproducibility		±0,01 %	±0,01 %	±0,01 %	±0,01 %	±0,01 %	±0,01 %
K-factor	K2 [P/I]	2.432	1.280	468	142	79,6	33,6
	K3 [P/I]	7.296	2.560	1.014	302	167	57,6
	K4 [P/I]	7.296	2.560	1.014	302	167	87,6
Frequency	f2 at Qnenn [Hz]	405	640	780	828	929	1.120
	f3 at Qnenn [Hz]	1.216	1.280	1.690	1.760	1.949	1.920
	f4 at Qnenn [Hz]	1.216	1.280	1.690	1.762	1.948	2.920

OMS series.

Technical data		OMS-020	OMS-032	OMS-052	OMS-020
Media		Low viscosity	Low viscosity	Low viscosity	High viscosity
Nominal diameter	DN inch	¾	1	1 ½	¾
Flow rate I/min	Qmax	45	150	525	-**
	Qnenn	30	100	350	10
	Qmin	0,6*	2,0*	7,0*	0,04*
Pressure max.	bar	185	185	120	400
Temperature	°C	-20 - +150	-20 - +150	-20 - +150	-20 - +80
Viscosity	mm²/s	1 - 10²	1 - 10²	1 - 10²	10² - 10⁶
Accuracy	from measured value	±0,1 %*	±0,1 %*	±0,1 %*	±0,5 %
Reproducibility		±0,01 %	±0,01 %	±0,01 %	±0,01 %
K-factor	P/I	1.280	468	142	66.000
Frequency	at Qnenn Hz	640	780	828	11.000

The series of our dosing devices.

Dosing devices
OMP series

Dosing devices
OME series

Dosing devices
OMG series

Dosing devices
OMH series

Dosing devices
OMS series

Dosing devices
OMX series

Frequently asked questions about our dosing devices

What are dosing devices?

A dosing device is a technical unit that precisely conveys liquids or oils. It can be used to move uniform quantities in processes, which ensures stable processes. Our solutions are also used as marine dispensers or in the field of fuel metering, where accuracy is essential. Diesel feeders and ...

How does a dosing device work?

A dosing device works by moving liquids in clearly defined quantities. The technology ensures that each delivery is consistent and that the process remains stable. For example, a dosing system in the shipping industry uses such devices to precisely supply fuels or oils. The dosing device regula...

Which media can a dosing device reliably convey?

A dosing device can reliably convey many different media. These include liquids such as oils, lubricants or chemicals that need to be processed in exact quantities. Viscous substances can also be moved evenly with a dosing device. Even at high temperatures or in continuous operation, the perfor...

What maintenance does a dosing device require on a regular basis?

A dosing device requires regular maintenance in order to work reliably in the long term. This primarily involves checking seals, valves and pipes, as these components are subject to constant contact with liquids. Cleaning is also one of the typical tasks that are important for a dosing device. ...

Which industries prefer to use a dosing device?

A dosing device is preferably used in industries where precision and safety are crucial when handling liquids or lubricants. These include the chemical industry, shipping and mechanical engineering. The power generation and petrochemical industries in particular use a dosing device to convey li...

Do you have any questions?
Please feel free to contact us.

+43 / 55 77 / 8 66 44 - 0

kral@kral.at

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Dosing devices.