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FTP, Helical Gear, Fluid Transfer Pumps for Low-pressure, Low Viscosity Lubrication Applications

Mechanical PTOs

The low noise, high efficiency, low pulsation, fluid transfer helical gear pump reduces noise level by an average of 15 dBA. Ideal for low-pressure, low viscosity lubrication applications such as fire-resistant fluids.

Typical applications include large lubrication systems, lubrication of the guides of machine tools, and the lubrication and cooling of tools themselves.

Fire-resistant fluids are used whenever there is a possibility that a hydraulic fluid (also used for lubrication) may encounter a source of ignition, such as the surface of very hot equipment. Fire-resistant hydraulic fluids are specially formulated so they are more difficult to ignite and do not propagate a flame from an ignition source.

There are several types of fire-resistant fluids and they are generally classified as follows: oil and water emulsions, water-polymer solutions, and anhydrous synthetics. More specifically, the International Standards Organisation (ISO) further classifies these fluids as follows:

  • HFAE – oil-in-water emulsions, typically with more than 80% water content;
  • HFAS – synthetic aqueous fluids, typically with more than 80% water content;
  • HFB – water-in-oil emulsions, typically with more than 40% water content;
  • HFC – water polymer solutions, typically with more than 35% water content (also known as glycol solutions, polyalkylene glycol solutions or water glycols);
  • HFDR – synthetic anhydrous fluids composed of phosphate esters; and
  • HFDU – synthetic anhydrous fluids other than phosphate esters. Examples include polyol esters and polyalkylene glycols.

The only fire-resistant fluids that are completely incompatible with these gear pumps are the HFDR type; for all the others, it is possible to obtain a configuration that makes them compatible. To avoid fast wear of the sliding contact parts, FTP pumps can be supplied, depending on the type of application with bronze or bronze/PTFE thrust plates.

These FTP helical gear pumps are available in versions with or without a relief valve built into the cover, and maximum working pressure is 50 bar. The gear pumps have very high specifications for rotation speed and viscosity range.

FTP pumps are currently available with clockwise rotation, with counter clockwise being developed, and all commercial versions of standard gear pump.

Technical specification catalogue available here

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