SAFETY RELIEF VALVE Russian patent published in 2008 - IPC F16K17/02 

FIELD: mechanics.

SUBSTANCE: said safety relief valve comprises a body. Inner cavity of the body is divided into pressure section, shut-off device (SOD)spring section and drainage section. In the drainage section, a SOD, e.g. in the form of a ball or a cone, is installed. SOD is pressed against the seat by means of a spring via a plunger. The plunger is installed in the body inner baffle opening. The baffle separates the drainage section and spring SOD section. The SOD spring section and pressure section communicate via an opening. SOD seat is a sleeve. It is threaded into the body pressure section bore coaxially to the body inner cavity centerline. The sleeve outer surface and the pressure section bore are threaded. Inner end of the sleeve is sealed against the drainage section bore due to tapered or spherical contact surface. There is at least one radial opening in the sleeve wall, which connects the pressure section with the spring SOD section.

EFFECT: simplified design and less labour input during manufacture, together with design standartisation.

3 cl, 2 dwg