water pump - Event Date: 06 Oct 2015

Q7:  Only the fresh water tank has low-point drains.  The fresh water tank on my 177 has two low-point drains.  Stickers on the side indicate their general proximity.

Originally posted by Q7-retired I can't find the low point drains, except for teh fresh water tank drain.  Can you please point me to them?

They are usually right behind the road-side wheel.  I've heard that sometimes the expanding foam they fill just about every crack with might at least partially obscure them, so you might need to get down on your back and crawl under, and even feel around for them.  They shouldn't be hard to find though.  They ought to be very close to the outside edge of the pod (road-side) and not far behind the axle.  If the foam is in the way cut away enough to reveal the drains and turn the caps easily.

TT

Well, there are, sort of, low water drains on the black and grey tanks.  They are the 4" things you hook the stinky-slinky up to to drain into dumping stations.  They take all of the liquid out of those tanks, which is the idea of a low-water drain.  You don't want anything left in those tanks that can freeze and break the tank or lines and those drains serve that purpose.

Those aren't usually thought of as low-water drains though.  For that matter neither is the drain on the bottom of the fresh water tank.  It's just a drain.  And since it's fresh water, you can dump it anywhere.

Low water drains are usually thought of as drains that can be opened to let all of the water out of the RV (or home) plumbing lines.  Most homes don't have these unless they are vacation homes often vacant in the winter.

There are two such low-water drains behind the road-side wheel axle.  Both are for fresh water.  One for the hot water and one for the cold water in the lines going to the kitchen sink and bathroom.  After you drain all of the water from the fresh water tank under the pod, there is still water in the lines.  To drain that for the winter you have to take the caps off of the two low-water drains under the pod and open the valves in the kitchen, shower, and hold the valve open in the toilet so that all the water can go out those drains.  Then, because there still might be some water left, you suck some RV antifreeze into the lines through the special antifreeze sucker hose under the sink until the pink stuff runs out of all of the outlets.  (That's really another subject and there is more on this elsewhere in the forum.)

TT

Added.

Originally posted by mcclurey I have two sets of low water drains.  Two in front of axle and two behind. Can someone tell me the difference? Thanks

If you have a garage model, this is where we see that layout most often.. they drain two different parts of the system. Use them both when draining the system.