ОБРАТНЫЙ КЛАПАН

摘要

FIELD: valves. ^ SUBSTANCE: the check valve is used as valve. The check valve has a body. A multi-stage gate is installed in the transfer canal of the latter. The latter is made in the form of a step piston with different effective throat areas on the ends of the steps of the larger and smaller diameters. The openings in the body are made conjugate to the surfaces of the step piston. ^ EFFECT: enhanced reliability of valve operation. ^ 1 dwg