Watts Tankless Water Heater Service Valve Kit

Installed these today with no issues at all. They are well made and easy to work with.I think it's important to mention that you need to use thread tape (or equivalent) on the pieces you connect to the valves. They are tapered fittings and therefore do not use o-rings to seal, they seal against the male threads, and those male threads need to have thread tape (teflon tape, pipe tape, etc) on them or you will not have a good seal. I think most of the negative reviews are from people who's biggest issue is user error.Mine came with the pressure relief valve. Have read some reviews where people say they didn't get that part. Mine was shipped by Handyman Direct. Thank you Handyman Direct!

Had a tough time getting the fittings to tighten enough to keep it from leaking. You may want to start with about 10 wraps of teflon tape.

While remodeling my basement I also changed most of my water pipes in the house. When my Navien CH-240 was installed, the plumber did not use a valve kit, so to remediate this I purchased this valve kit. I also purchased the Noritz IK-WV-200-1-TH-LF 3/4-Inch Lead-Free Threaded Tankless Isolation Valve Kit with 500,000 BTU Pressure Relief, because it looked similar at a better price point. Well well, guess what? They are one and the same!!! The Noritz only changed the handles (to have their own logo on them), other than that this is identical to the Watts. What am I saying, this is the Watts with different handles. BUT, what even nicer, it comes with the pressure relief valve as well (a Watts as well)! If purchasing the Watts kit, you need the relief valve, so the price would be much higher! So if I were you, I would just get the Noritz since it is one and the same, and you get the pressure relief valve included for a much lower price!As far as how it works, I installed the Noritz and it works great, with no leaks. Since they are identical I count as reviewing this one as well.EDIT: When I purchased these they were both sold and fulfilled by Amazon. Noritz was about 80 bucks and Watts a little over 100 bucks.

I wanted to be able to easily maintain the new ECO 18 tankless water heater. After doing a little research these valves seemed to be one way to keep the ECO 18 clean and in good shape. My plumber installed them when he installed the tankless water heater. I haven't had to flush the system - I'll be back in 6 mos. to let you know if they work as planned and make my maintenance on the ECO 18 easier.

Bought this because the manufacturer said that all parts were included. No pressure relief valve. That was not the frustration point. No plug for the hole either! That, plus the fact the product is listed as a "Kit". A kit includes everything when you say if includes everything. Perhaps just change to "Hot and Cold" Valves for Tankless Water Heater. The valves themselves are of very good quality. Had the product listed that the pressure relief valve was not included, the rating would have been a 4. Had the product listed that the pressure relief valve was not included AND a plug for the hole was included, the rating would have been a 5. I am very disappointed in this, and made the purchase because of the Amazon Prime listing. Very disappointed.Edit:Relief valve is supposed to be part of the kit. It is listed in number 3 (as figure 3). Time to call Amazon.

Very well made valve. It arrived within two days. i got the valves installed and turned the water on. I had a leak. took the leaky valve apart on found that the O-Ring was missing. I guess I should have looked at it first. I went to big box store on Sunday and was able to find another O-Ring.All works fine now.ThanksErnie

Surprising to me how much these cost, but the price seems to be about the same across manufacturers. Not a piece to save a few bucks on, as the cost of replacement is too high and failure even higher.Note that if you are using this with a pressure relief valve, you will need to get one with a short probe/stem-thing that goes inside the pipe. The ones for sale at my local hardware store all had probes which were too long, like the ones used with a water heater. I was using mine with a tankless heater.

Seemed like a bad idea to spend ~65 bucks for something I could get at a store for maybe 20 bucks.. well you think that until you get them. If I had a kevlar sock I could kill a bear with these. High quality. Very very robust. Hell you just spent 5 to 9 hundred on the tankless, buy these you'll wish you had.