FOUR-WAY DIRECTIONAL VALVE Russian patent published in 2008 - IPC F16K7/17 F16K11/00 

FIELD: construction, pipeline.

SUBSTANCE: invention pertains to pipeline fitting and is intended to industrial facilities using branched air duct network, such as, mining enterprising and metal-work factories, etc. Four - way directional valve contains two lids, baffles forming cavities for controlled fluid and two membranes. Membranes are set between the baffle and the lids. Directional valve is additionally equipped with a frame, nets with size of the openings equal to the thickness of the membrane, spacer plates and controlling two-way taps. One baffle is arranged upright in the fame. The other is arranged along the diagonal of the frame. Both baffles are connected with each other in conjunction forming three cavities. In the frame of the first cavity there is a through exit on both sides of the frame. In two others cavities exit is made onto one of the opposite sides of the frame. In the frame of each of the cavities there are openings for input and output of the controlled liquid. There is an additional opening from the side of the cavity having a through exit onto both sides of the frame. This opening is connected to the pipeline through a three-port with controlling two-way taps.

EFFECT: reliability enhancement, design simplification, lowering labor intensity of manufacture and operation of the directional valve and increasing its service life.

4 dwg