FLUID MEDIUM VALVE, NAMELY, BACK CHECK VALVE FOR VANISHING UNIT Russian patent published in 2014 - IPC F16K17/30 B05B13/00 B05B15/00 B05B1/30 

FIELD: machine building.

SUBSTANCE: invention relates to the fluid medium valve and can be used in vanishing units, for example, for paint change, for pumping of residual paint, washing agent, foam, paint, air and/or compressed air from the paint pipeline, injection zone etc. to the return pipeline and/or stopping the paint free flowing downstream before running-off into the return pipeline. In the fluid medium valve the process of switchover of the fluid medium valve (8) is feedback controlled by the density of the matter at the inlet of the fluid medium. In the vanishing unit, in particular, for application of varnish on the structural members of the car body the back check valve (8) is a fluid medium valve according to any of items 1-26, and the main needle valve is a fluid medium valve according to any of items 1-26. The fluid medium valve (8) is used according to any of items 1-26 as a back check valve (8) in the vanishing unit for return of residual paint, washing agent, foam, paint, air and/or compressed air from the paint pipeline (5) for paint change. The valve (8) is also used as a main needle valve in the atomiser.

EFFECT: possibility of control of the back check valve for paint change with achievable smaller costs and higher accuracy.

28 cl, 28 dwg