4 Loop Manifold Stainless Steel Pex 0-2 GPM Radiant Heating, with 1/2" Pex Fittings

So I was a little hesitant to order this because it is very cheap compared to some of the radiant manifolds on the market, such as those on supply house, which are double or triple the price. I just re-did the entire heating system in my 60+ year old home and did not skimp on materials, everything I bought was high end including all of the valves. I wanted one of these so I could balance the flows to my 4 loop radiant floor system downstairs, which previously only had copper pipe supplying it. I was a little concerned that this would leak or that something would break but I didn't want to spend $500 or more on one of these. But I have to say, so far its been good. The compression fittings that are included with it for 1/2" PEX seem to be very high quality. The valves and temperature gauges are certainly NOT high quality, but they do work, at least for now. Its been pressurized and running for 3 months now, we'll see how it holds up over time...ONE THING TO NOTE: after you install it, you need to remove the red locking washers they put around the flow indicators. These are shutoff devices that do not allow water to flow. There are literally no instructions or notes anywhere that tell you you have to do this. It took me a while to figure it out on my own.

If you need instructions for this product you shouldn’t be buying it because you’re already over your head

No instructions on how it works proper hook up it says 1" npt I used brass fittings and Teflon tape and tighten beyond what I call enough and both leak.