To simplify and facilitate working/grinding or the like on a valve hole in
a body for a valve reduce a manufacturing cost of the body for a valve. A
body for a valve 10 provided with a valve hole for inserting a valve
member slidably therein is formed by splitting the body for a valve on
split faces 13 including an axial line of the valve hole and extending
along directions of flow paths 12p, 12a, 12b, 12r communicating towards
the valve hole from ports P, A, B, R opened to a body outer face and
mutually joining body portion pieces which are respectively molded
individually.