SAFETY VALVE OF SINGLE ACTION Russian patent published in 2014 - IPC F16K17/40 

FIELD: energy industry.

SUBSTANCE: safety valve of single action comprises a housing with a tear-off element mounted in it. The tear-off element is made as a stem with a neck in the middle part of it, and a notch. The notch is a stress riser on the neck. The diameter of the said neck is calculated for the actual tensile strength of the stem material. The stem comprises at its ends a male thread. With one threaded end the stem is screwed into the disc with delivery outlets, mounted in the housing by male adapter of the input. With another threaded end the stem is screwed into a threaded hole of the piston compacted in the housing. The radial holes are made in the wall of the housing, which are hermetically separated from the male adapter of the input by the piston seal.

EFFECT: creation of the safety valve of single action with a stable actuation pressure.

2 cl, 2 dwg