Hourleey 3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit, with Pressure Relief Valve, Clean Brass

These devices are absolutely essential for tankless water heater applications. They greatly help facilitate the necessary servicing that "Should" be done to them. It also provides an integrated and reliable means to shutoff and isolate the "hot and cold" lines at the water heater, so that the water can continue to be used throughout the house without the worry of back-flushing the hot waterline, through a mixer valve commonly found within modern faucets, and flooding the house in the event that the heater has to be removed for servicing.This particular valve is made to a very high standard of quality, and will likely last for a very long time without fail. I would place it on the same level of quality (if not higher) as some of the more expensive household name brands available at the big box stores.The kit comes with a union, on each valve, that utilizes a flat rubber gasket for sealing. nothing about this appears to be proprietary or hard to obtain in the event that they might need to be replaced.I have installed many of these throughout the years, and will now always keep one of these on my shelf ready to be installed. I am very happy with this item.

Excellent set seems to be good quality have had installed for a year now no issues

Would purchase this kit again

Didn't install for a couple years. Regardless, should this brass coupler cracked causing a leak even now if I installed 3½years ago vs 1½?

I you are installing tankless water heater, you definitely will need to buy these valves set. Build quality is very solid, valves turn easy.

Absolutely love this for tankless water heaters!

Does what it's supposed to do for HALF the price of my local plumbing supply wholesaler

Makes plumbing the water heater simpler, I like having everything in one box so I don't have to round everything up separately at the hardware