SAFETY VALVE Russian patent published in 2015 - IPC F16K17/06 F16K1/42 

FIELD: machine building.

SUBSTANCE: safety valve includes housing 1 with inlet 2 and outlet 3 branch pipes, a seat in the form of stepped bushing 5 installed in inlet 2 of branch pipe with possibility of axial movement to end stop 11, shutoff element 7 with skirt baffler 12 of working medium flow and adjustment spring 8. Seat 5 is installed elastic moving in relation to end stop 11 and shutoff element 7. Along lower edge of skirt baffler 12 there made is end surface B for valve support in non-operating state on valve housing in its flow part under impact of adjustment spring 6.

EFFECT: increasing service life of safety valve due to sparing specific loads on sealing surfaces of lock both during operation and during transportation, storage and reservation.

3 cl, 4 dwg