Blowing out water lines prior to winterizing

Coffee Grinder, I follow pretty much what everyone else is telling you, but I have an additional step. If you look at your water pump, there is (at least on many rigs) a small threaded strainer or filter on the infeed line. Unscrew that and just set it aside until dewinterizing next spring. I can recall not doing that one year and found it cracked and leaking in the spring.