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Author:
bamnc (NC)
This is a question left over from winter 
While the copper supply line in my basement was frozen, I was able to get water from "the street" by opening the waste outlet on the stop-and-waste valve. Does that mean the stop-and-waste is installed backwards? In other words, is the waste outlet supposed to drain the water from the house, or is it made to drain the water from the pipe between the meter and the shutoff valve?
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Author:
packy (MA)
sometimes the valve body will have an arrow showing the direction of flow.
the waste button is supposed to drain the water from your house piping when the valve is closed.
when installed correctly, the pressure enters the valve from below the seat.
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Author:
hj (AZ)
If it had been a "T" handle stop and waste, which automatically opens the drain port when it is closed, you would have had a flood if it were installed backwards. In your case, if it was "pressure" water, and not just drain down, then it is backwards.
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Author:
bamnc (NC)
I closed the valve, unscrewed the cap on the waste outlet, opened the valve just a little bit, and water came out the outlet "all day long", obviously from the street and not from the frozen piping of the house. So I filled buckets to do some cooking, toilet-flushing, etc. So the Stop And Waste valve is backwards, right?
If the valve hadn't been backwards, I would have closed the valve, opened the outlet cap, and drained a tiny bit of water from the frozen pipes even without opening the valve a little bit. Right?
-Bam in NC
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Author:
packy (MA)
2 choices...
remove the valve and replace with a ball valve (oriented correctly)that has a drain button.
cut the pipe on the house side of the valve and install a tee with a drain valve in it.
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Author:
Fixitangel (NC)
So if a Stop and Waste valve is installed backwards, it becomes a Stop and Fill valve instead
Edited 2 times.
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Author:
hj (AZ)
More like a "stop and flood" valve, because there is no way to stop the flow inless you can screw a cap onto it, (which you cannot do with a "T handle" stop and waste), or find a second valve further upstream.
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