FUEL TANK DUAL-FUNCTION VALVE Russian patent published in 2010 - IPC B60K15/35 F16K24/04 

FIELD: transport.

SUBSTANCE: invention relates to multi-purpose dual-float valve to be used in vehicle fuel tanks. Proposed valve comprises body 12 defining limited space 20 and furnished with one or more inlets 24 to allow fluid to flow into space 20, fluid outlet chamber 30 arranged at body top communicated with outlet 32, first and second discharge openings 38, 42 arranged between space 20 and chamber 30, valve 48 arranged in space 20 and comprising first stage float 50 interacting with opening 38 and second stage float 52 interacting with opening 42. Floats 50, 52 are arranged to move in space 20 along parallel axes between open and closed positions. Note here that float 50 covers at least partially, float 52. Opening 38 has larger cross section area compared with that of opening 42. Float 52 comes first in sealing position in opening 42 and, thereafter, float 50 is forced by floatability forces in similar position in opening 38.

EFFECT: multi-purpose valve.

21 cl, 15 dwg