Assertion: umbrella valve | /r/HasProperty | accommodated in recessed portion
Facets:
Source sentences:
text: The umbrella valve (particularly, the first umbrella valve 23, for example) is accommodated in the recessed portion 8.
text: Due to the above described structure, because the umbrella valve (particularly, the umbrella valve 23) is accommodated in the recessed portion 8 formed at the partition wall 21, the piston 5 is arranged adjacent to the valve housing B. Accordingly, a volume of the pump chamber 1 is arranged to be small wherever possible, thereby improving the pumping efficiency.