Single ball shuttle valve ine 3 ports ye-in-line pombi dzemvura: apo zviteshi V1 uyeV2 yakabatanidzwa kune 2 mitsara yebasa, valve inopa yakakwirira ye 2 kudzvinyirirakusvika kune yakajairika port C. Bhora rimwe chete rinobvumira kuora kwechiratidzo chekumanikidzaapo zvose zviteshi zvebasa zvinodonha kusvika kune yakaderera kudzvinyirira level.