| 摘要 |
A valve includes a housing having two opposite juts and a bore and a projection, a plate having two curved oblong holes and a stem rotatably received in the bore of the housing, and a follower secured to the stem and having an extension for engaging with the projection of the housing. A base includes two inlets and two hubs aligned with the inlets, and an outlet, and an upper peripheral wall having two notches oppositely formed in an inner peripheral portion and each formed by an outer fence member. The juts of the housing are engageable into the notches of the base, and engageable into different notches of the base when the housing is rotated for 180 degrees relative to the base.
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