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Doug Miller

In article .net, wrote:

Was recommended by a plumber to never a put valve in a horizontal orientation
if you can help it. Horizontal orientation allows sediment to settle in the
valve and can result in binding or less-than-full closure. Vertical
orientation always results in sediment falling to the bottom of the vertical
run.

That's just silly. If there's enough sediment in your water for that to be a
concern, you should be filtering it where it enters the house.