SAFETY VALVE Russian patent published in 2017 - IPC F16K17/04 F16K17/34 

FIELD: construction.

SUBSTANCE: safety valve comprises a housing with inlet and outlet nozzles, a bellows sealed to housing and movable member, a locking mechanism comprising a spring loaded separator with cylindrical retainers. Fixing mechanism is provided with an additional spring 10, disposed in internal cavity of movable member 11 in the form of a cup, interacting with cylindrical locks 8, and support 14 with a rod 15 provided with a head 16, connected to the sealing assembly, consisting of a slide valve 5 having an internal groove, and a sealing seat 6 on the outlet nozzle 3. The head has 16 rod 15 in the groove of slide valve 5.

EFFECT: expansion of operational capabilities of safety valve and increasing the reliability of its operation during exploitation due to the imperviousness of shutter after multiple responses.

6 cl, 2 dwg