VALVE DEVICE

WIPO Patent Application WO/2021/132035

A1

Provided is a valve device in which a pressure regulation valve can assuredly make full stroke to a maximum elevation position, and which can suppress increase in size of the device by making the pressure regulation valve compact.　A valve device (10) comprising a housing (15), a float valve (80), and a pressure regulation valve (90), wherein: a first valve seat (26) is formed at a ventilation chamber-side rim of a valve port (25); an housing part (30) is formed so as to protrude from a ventilation chamber-side surface of a partition wall (23); the inner perimeter of the housing part is provided with a reduced diameter part (35) that fits with the outer circumference of the pressure regulation valve and an enlarged diameter part (37) that has a diameter larger than the outer circumference of the pressure regulation valve; the height of the upper end (36) of the reduced diameter part (35), while being in contact with the first valve seat (26) of the pressure regulation valve (90), is equal to or greater than that of a surface (92) of the pressure regulation valve (90); and the pressure regulation valve (90) is positioned above the upper end (36) of the reduced diameter part (35) when the tank internal pressure has increased to the maximum pressure level.

MIHARA KENTA (JP)
YAJIMA KAZUKI (JP)

PCT/JP2020/047251

July 01, 2021

December 17, 2020

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PIOLAX INC (JP)

B60K15/035; F02M37/00; F16K24/04; F16K31/18

WO2016031726A1

2016-03-03

JP2010105469A

2010-05-13

SATO & ASSOCIATES (JP)

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