Wobble plate piston water pump for use in a low flow gas pressure washer or a low current electric pressure washer

A wobble plate piston water pump for use in a pressure washer and driven by a driving source, the water pump comprising:

• a pump body defining five channels;
• a wobble plate disposed in the pump body and having a rear side and a front side, the wobble plate being rotatable around a rotational axis via mechanical connection on the rear side to the driving source, the front side being inclined relative to the rotational axis, the wobble plate comprising a pitch circle having a diameter defined by annular spacing of a plurality of thrust bearings disposed around the wobble plate;
• five equally annularly spaced pistons, each piston located in a respective one of the five channels, the pistons being moveable by the wobble plate so that the pistons are reciprocatable within the channels during rotation of the wobble plate, the pistons defining a pitch circle having a diameter defined by annular spacing of the pistons that is smaller than the wobble plate pitch circle diameter;
• and
• a water passage defined by a water inlet and a water outlet each in selective fluid communication with one of the five of channels based on a phase of reciprocation of the respective piston for that channel, the water inlet providing low pressure water to the channel while the respective piston for that channel is moving away from the water inlet, and the water outlet receiving high pressure water from the channel while the piston is moving towards the water outlet.