To reduce the possibility of freeze-up, drain the V43/V243 valves during shutdown. To drain, unscrew the drain plug at the base of the V43/V243 valves. See Figure 1.
Note: In order to drain, you must mount
the V43/V243 valves in a horizontal water line with the bellows
up and the drain plug down.
Figure 1. MONEL screen, drain plug, and manual flushing procedures