The Toilet mixing Valve.
What Is it and what does it do? It
mixes a little hot water to the cold
water line going to the toilets. It
helps prevent the toilets from sweating.
Where can I find my mixing valve? Most
of the time it is by or above the water
heater or boiler. But some foolish
people put them in walls or other places
that are hard to find. What kind if
problems can it cause? It can cause hot
water in the toilet. it can cause a loud
noise every time water is used in the
house. sometimes only when a toilet is
But it can also make noise when any other fixture is
used. It allows cold water to get into the hot water lines and hot water in to
the cold water lines.
What does it look like? Click on the thumb nail
||This is what some of the mixing valves look like.
There are different types that look similar.
||What do I do if it is malfunctioning? Replace it
with the fittings shown in the thumb nail
2- 1/2" Sweat in line
Spring check valves (NOTE: DO
NOT USE FLAP CHECK VALVES), 1- 1/2" Sweat ball valve 1-
1/2" sweat tee. and some 1/2" sweat 90's
It should look like the next thumb nail
The ball valve goes on the hot water line before the check valve, and is just
opened a crack to allow a little hot water to mix. this line only goes to the
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