A valve includes a valve body forming a first flow passage and a second
flow passage that connects to the-first flow passage through a first
opening and a seating element forming a bypass passage that connects the
first flow passage and the second flow passage. The bypass passage
opening has a smaller cross-sectional area than the first opening. The
valve also includes a valve control element that can be repositioned to
open both the first opening and the second opening, open the second
opening while closing the first opening or close both the first opening
and the second opening. The bypass passage may allow fluid to drain
through the valve to prevent fluid from building up in the valve. If
fluid becomes frozen, the valve may become stuck shut. In some
embodiments, the bypass passage opens only if the temperature creates a
possibility of freezing in the valve.