Thermostatic Mixing Valve，Shower Mixing Valve with 1/2 NPT Male Connections,Water Temperature Constant Control Valve,Solid Brass

NPT and NPS have the same thread angle, shape, and pitch (threads per inch). However, NPT threads are tapered and NPS threads are straight. Don't buy the NPS Thermostatic Mixing Valve unless you need straight threads, If you need NPT tapered no washer needed only thread seal buy the valve with NPT and no need to use the leaking fittings to change from NPS to NPT as almost all of the one star reviews did. Also a one star pointed out no directions come with valve for installation, the C on valve is for Cold water the H is for Hot water and the arrow is for warm mixed water out to fixture, and the red button lets you go over 100 degree water supply to fixture. The pointer is to set water temperature by turning the valve to the temperature you want. I put NPT to PEX fittings using tape on the NPT turned on the hot and cold water no drips worked great. set valve to 86 degrees, has a full flow and works great. I never tested to see if cold water fails if valve shuts down and I don't know if it fails to cold so I would not use it for anyone with any impairment that may scald them unless I checked that out first?

In the bathroom I have a tower so my young baby can climb on his own and wash himself. I purchased the tower when he was about 10 months old. This mixing valve is absolutely essential to ensure that the baby does not scald himself. It mixes the hot and cold water at a chosen ratio, which means that the final temperature will be constant and it will be the same regardless of which faucet handle my son turns. My setup: the hot and cold water lines go in, the valve mixes them at the temperature that I want, then water at the right temperature comes out. Next, I have a T valve that splits the line in two, going into the faucet.

My dog is much happier and so’s the wife

Only lasted for 10 months. We have been taking it apart and cleaning it repeatedly over the last month, and now it just doesn't work.

I’m using this to send warm water to my fish tanks for water changes. It has worked great and stayed consistent with temperature. It is a little tough to dial in at lower temperatures (78°), the dial isn’t right when it’s that low but you can use a thermometer in the stream to fine tune it. Cheapest mixing valve I could find that would work and I’m happy with it.

Incorrect product description. Threads are straight (NPS), not tapered (NPT). Product leaks when connected to an NPT fitting. UPDATE: Had another go and cranked the 1/2 fittings on for all I was worth--no leaks. Device works perfectly for my application, prevent toilet sweating. Like that the temperature can be set down to ~68 F, some others cannot go that low.

I used it to get warm water to an outside spout. It works great for this.

I put this on my kids shower so they can't scald themselves. Temperature response is excellent. I like it so much i just bought a second one for my shower. One tip: throw the included Teflon tape away. If you use it, it will leak. Buy some good Teflon tape and you'll be fine.