SAFE VENT VALVE Russian patent published in 2014 - IPC F16K17/19 

FIELD: machine building.

SUBSTANCE: invention relates to valves and accessories for pressure and vacuum adjustment in oil, oil products and chemical storage, transportation and discharge tanks. Safe vent valve comprises pyramidal body 1 with square funnel bottom 2 having drain bore 3 with check valve 4 and pressure valves 5. The latter are arranged in diagonal direction to square bottom 2. Said valves are equipped with whole-drawn sets 6 and inclined plates 7. Weight of one of said plates is smaller than that of the other plates with tolerances. Vacuum valves 8 with seats and plates are made at sides of said pyramidal body 1. The latter is enclosed in shell 9 with sealing cover 10 equipped with funnel 11. Fire barrier 12 with through channels 13 is arranged above said shell 9 and connected with valve 14 of vertical displacement drive 15. Funnel-shape adapter 16 with connection flange 17 is arranged under shell 9.

EFFECT: higher capacity and reliability, non-polluting design.

3 dwg