FIELD: machine building.
SUBSTANCE: invention relates to design of suction and discharge valves of piston compressors. The automatic valve contains seat, lift limiter and stop device under them pressed to the seat by means of at least one pair of the permanent magnets which like poles look on each other. One magnet of the pair is movable and is installed with the possibility of movement in slot of the lift limiter against the second fixed magnet . The lift limiter is out of two parts with jointing plane passing between the magnets of the pair. The slot with movable magnet is located in the part nearest to the seat. The fixed magnet is single-piece, and is installed in second part of the lift limiter. Between parts of the lift limiter in zone of the permanent magnets there is cavity connected with its through channels.
EFFECT: invention increases reparability and reliability of the valve work in case of the environment pollution.
3 cl, 1 dwg
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