BOTTLE PRESSURE REGULATOR Russian patent published in 1996 - IPC

FIELD: survival aids. SUBSTANCE: bottle pressure regulator may be used in mix of oxygen apparatus meant for protection of mountain climbers against hyposia under Alpine conditions. It includes body with inlet and outlet unions where first and second stages of pressure control are located. Device controlling pressure regulator is installed in duct communicating outlet cavity of first stage of pressure control with inlet cavity of second stage of pressure control. Duct to feed bottle pressure to valve of first stage is so manufactured that direction of action of bottle pressure on unbalanced area of valve of first stage matches direction of active of loading spring on sensitive element of first stage. Regulator is also fitted with shut-off device. Shut-off device includes hand drive with fixed open and closed positions. Restoring element is placed between drive and sensitive element made as one unit with valve of first stage. Restoring element ensures sealing of valve in closed position of hand drive. There is clearance between drive and restoring element when hand drive is in open position. EFFECT: increased operational reliability of bottle pressure regulator.