But there can be a wide fluctuation of temperature in that kind of valve, so it’s not always safe.
A type T valve is a much more expensive valve and it will first of all shut the flow off if it hits a scald level.
But the most important function on a day-to-day basis is it will not let the water temperature fluctuate more than half a degree one way or the other. Now that’s our secure tip, there are a lot of different quality levels of these valves, but we want to go to the very highest and most effective.
When I put a rapid flow three-quarter inch type T thermostatic mixing valve hard plumbed in the wall in this system that now permits me to accomplish the goal of separating the flow from the filler system in the shower.
Again, I think everything in your system should be hard-plumbed. Meaning copper or something that is not a flexible connector within the system, especially if it’s under the tub. Now, your handheld one on the outside of the tub, that’s a different story. It’s okay to use a flexible hose as long as it’s exposed because it’s easily replaced if you create or develop a leak over time. So our deluxe level will put the thermostatic mixing valve in the wall, headwall, or side wall, depending on the installation.
And we’ll use the hot and cold flow valves as gate valves to control where the water goes.
Our custom level, which is the highest level we now take an interior diameter of three of quarter inches, these valves will flow 20 gallons a minute each. They’re the largest flow valves in the industry for residential use.