Robert Barr wrote:

Harry wrote:

Hello



I'd like to know if there is a better way to blow the water out of the line
than just turning off the shut-off, opening up the drain cap (to let the
air in) and turning on the tap in the garden.


Now, to be clear: This drain cap is indoors, between your shutoff and
the garden tap?

I would be tempted to plumb a way to fill this length of tubing (exposed
to the cold) with RV antifreeze. Perhaps with a shutoff followed by a
standpipe, giving you enough height to put the opening taller than the
outdoor tap (so that gravity alone gets the job done).

Damn! I was going to suggest that. No point in using electricity when
$1.99 worth of RV antifreeze will do the job. I would put a T with 1
foot or so pipe with a cap just downstream of the shutoff valve.
After the op blows out the line, he would remove the cap, put a short
hose on the outside tap and raise it to about 2 inches less than the
height of the 1 foot pipe next to the valve, and poor antifreeze into
the pipe until some yells that antifreeze is comming out the other
end. Then cap the 1 foot pipe, close the outside valve and remove the
short hose.