HNPM filters

The use of HNPM filters

HNP Mikrosysteme strongly recommends the use of a filter with a pore size or mesh width of 10 µm to protect the micro annular gear pump.

They offer a range of filters, including straight inline filters, inline T-filters, and inlet filters made from various materials with different filter surfaces. These HNPM filters can be ordered separately as a single product. Suurmond also uses them to protect pumps other than HNPM micro pumps.

A filter monitoring sensor can be implemented to detect impending maintenance or cleaning of the filter, as well as a closed supply line. In the "T-version", the sensor can be directly adapted, while for straight filters, it can be integrated by adding a separate mounting block.

Advantages of HNPM filters

• High filtration capacity in relation to the internal volume, due to large filter area
• High-performance filter elements for low pressure losses even at higher flow rates and viscosities
• Purely metallic filter elements without solder or adhesives
• For food and pharmaceutical industries: FDA-compliant sealing materials, surface roughness ≤0.8 and hygienic fittings on request
• User-friendly and economical; filter elements can be cleaned and replaced
• Very compact (height from 21.5 to 174mm)
• Small dead volume
• Smooth surface Ra 0.8