SLIDE VALVE Russian patent published in 2015 - IPC F01L5/00 F01L15/00 

FIELD: machine building.

SUBSTANCE: slide valve comprises a body made with an inner cavity, which comprises the first and second sliding surfaces, to the first of which channels are supplied for movement of working medium, a slide installed in the inner cavity of the body as capable of reciprocal movements with the help of movement devices and made with connecting and covering niches for position connection or closure of the specified channels, and also with compensation cavities, where pistons are tightly installed as contacting with the second sliding surface with the help of elastic elements, where niches turned towards the second sliding surface, are connected with appropriate compensation cavities, and also with connecting and closing niches of the slide for optimal pressing of the slide and pistons to the first and second sliding sliding surfaces of the inner cavity of the body. According to the invention, to the second sliding surface channels are also supplied for movement of the working medium, arranged oppositely to channels for movement of the working medium supplied to the first sliding surface, at the same time niches of pistons are arranged in the form of connecting and closing niches of the slide, and are arranged oppositely to the latter.

EFFECT: reduced hydraulic resistance of a slide valve due to increased number of channels for movement of working medium.