HAND-OPERATED PUMP Russian patent published in 2014 - IPC F04B9/14 B05B9/00 

FIELD: engines and pumps.

SUBSTANCE: invention relates to equipment for supply of liquid under pressure and can be used at washing of different surfaces. The pump body has a rectangular section with windows, in which bypass valves are arranged and connected through holes to upper and lower cover plates that form delivery and suction portions of the pump with inlet and outlet connection pipes. A piston of a rectangular section is mounted inside the body on a slide, the free ends of which are connected to a handle.

EFFECT: provision of operating reliability of the pump and improvement of its pumping properties.

5 dwg