The RADIAL pump

It works on the principle of the internal combustion engine with a crankshaft, connecting rods and pistons (2, 3 or 6), in an oil sump : a simple tried and tested concept, easy to maintain (first oil change after 50 hours, then every 250 hours) and repair (all parts are fully accessible). The quality of the pumps depends of the quality of the materials used.
1. «White bronze» reinforced connecting rods.
2. Suction and discharge valves known for their silence. Seat, valve and spring made of stainless steel.
3. Long life seal preventing extrusion hazards.
4. Stainless steel piston locking screw.
5. Exclusive sealing pack constantly lubricated, avoiding leaks. Very easily replaceable.
6. Extremely hard solid ceramic pistons. Perfect polishing ensures an exceptional longevity to seals.
7. Teflon, graphite and bronze covering to guide the pistons.
8. Oversized tapered roller bearings.

Radial pump : An extraordinary maintenance simplicity

There are two kinds of ceramic pistons :
pistons with ceramic sheath
ceramic coated pistons (ceramic projected on steel piston).
Advantage of ceramic : Longer lifetime of parts subject to friction (piston - seal).

AXIAL pump

The axial pump is coupled along the axis of the engine shaft. A rotating plate mounted crosswise on a shaft applies progressive thrust on each piston, returned by a spring.

Dimaco uses nearly only radial pumps on its HP washers for :

  • Comfort of the user (less vibrations)
  • easier maintenance of the radial pump
  • Longer lifetime of the radial pump
  • Disassembly and reassembly of the axial pump are not easy, maintenance and repair have to be carried out by professionals having a perfect knowledge of this technology