FIELD: well repair equipment. SUBSTANCE: discharge valve is intended for subsurface repair of wells and it allows for discharge of liquid from string of pipe-compressor pipes during their raising. Valve has body with radial holes, and membrane located in body. Also provided is additional membrane located in radial hole of body. Body has protrusion with inclined passage. Inclined passage is made in the form of space for shut-off valve with seat and ball. Radial hole is located in center of protrusion. Installed between membranes is intermediate supporting ring with circular groove in its external surface. Circular groove is connected with inclined passage and with radial hole. Hole connects circular groove with membrane surface. Application of aforesaid embodiment of discharge valve provides better conditions for operation of oil wells. EFFECT: higher efficiency. 1 dwg
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