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Derma Protect + Innovation GmbH
Division Metalworking

Siemensstrasse 6
88048 Friedrichshafen
Tel.: +49 (0)7541-591224
Fax: +49 (0)7541-591225

ISO 9001 farbe en

Fluid preparation comprises all devices, equipment, components and additives that are needed after the preparation of mixing water in order to produce a metalworking solution by adding the cooling lubricant concentrate.
We only use components that have been tested by us in the field and have already demonstrated an optimum of reliability, process reliability and longevity.

PROdos® 2,7 m³/h

The principle of the electricity independent proportion dosage pump PROdos® is simple and practical, which has proved itself daily for many years in the most various areas of use. The dosage pump functions without electricity and is simply connected to the water supply attachment of the coolant processor. The through-flow of water is used as the driving force. As soon as the dosage pump is activated, it sucks in the concentrate, doses the desired percentage amount and homogenizes it with the drive water in the mixing chamber. The solution thus produced is then piped into the machine. After a single regulation, no more adjustment or outside control is required on the pump. The dosage of the introduced coolant concentrate is constantly and strictly proportioned to the water volume that flows through the dosage pump even with the possible occurrence of pressure- and throughput fluctuations in the water pipe.

The high dosing precision excludes any risks of overdosing and thus contributes to the reduction of costs and environmental protection. The dosage range is from 0,025 to 0,4% or 1 to 5% or 2 to 10%.

The advantages of our PROdos® dosage pump without electricity
  • Hydraulic, volumetric, without electricity.
  • Dosing, servo-controlled via water pressure.
  • Precision, optimum surface quality without waste of coolant concentrate.
  • Excellent repetition exactness in respect of dosage rate and homogeneity.
  • Dosage rate easily adjusted at all times.
  • Installation, use and maintenance are very simple (without electricity related risks).
  • Self-suction up to 4m.

Back flash filter – 3/4" – 104 µm

If highest process reliability is required from the mixing water treatment, it is indispensable to install a water filter in the feed of the dosing pump in order to avoid possible disturbances and failures in the preparation of the mixing water. Our filter system has a manual and very effective backwashing of the filter unit. The connections are designed as a 3/4 "external thread, the filter has a filter insert with a transmission of 104 μm and the permissible operating pressure is 7 bar.

3/4" Pressure reducer with manometer – ready-to-fit

A pressure reducer protects installations against high supply pressure. When it is used, pressure damage is avoided and the water consumption is considerably reduced!
A pressure reducer (or pressure reducing valve, reducing valve) is a device for installation in a hose or line system, which ensures that a certain initial pressure is not exceeded at the outlet side, despite different pressures on the inlet side (inlet pressure).
The control factor is the lower pressure behind the pressure reducer, which is also called the back pressure. This is directed to a diaphragm whose movement causes the valve to open and close. If the back pressure then rises, the valve closes accordingly and thus reduces the pressure. Vice versa, the valve will open as soon as the pressure drops. The value of the back pressure can be controlled by a spring inside the pressure reducer, which acts on the diaphragm.