AXISYMMETRIC CHECK VALVE WITH UPPER JOINT Russian patent published in 2014 - IPC F16K15/06 

FIELD: machine building.

SUBSTANCE: axisymmetric check valve with an upper joint comprises a cylindrical body with inlet and outlet nozzles and with a bore in the upper joint. In the bore there is a stressed multi-layer mountainous seal for sealing of the body-cover joint. In the body there is a detachable seat installed by means of a self-sealing conical thread. In the cover by means of the pylon there is a fairing with a channel for installation of the device for generation of a signal on position of a stop valve.

EFFECT: higher serviceability at higher parameters of working media, reliability and tightness during entire service life of valve operation, for provision of its repairability without cutting from a pipeline, for realisation of continuous control of tightness of detachable joints of a valve and position of its stop element.

4 cl, 5 dwg