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Manifold Valve Replacement For 1-1/4" Brass Manifold
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Description
Questions?
Product Reviews
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Perfect to have a spare on-hand
Exact replacement
uponor brass manifold
Excellent Replacment
Solves my heating problems
Replacing Manifold Valves
Just screw it in & it works
Very Good Service
Just what I needed
Easily replace manifold valves
Product Q&A
3 QuestionsQ: I know this has been discontinued but do you have any suggestions for replacement? There must be another alternative than replacing the entire manifold. thank you.
Asked by LS 8 years ago
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Verified Reply- Unfortunately this valve is discontinued without replacement. The return manifold would have to be replaced.
Q: whats the recomended alternative
Asked by DJ 12 years ago
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Verified Reply- SupplyHouse StaffUnfortunately this valve is discontinued without replacement. The return manifold would have to be replaced.
Q: Do I have to drain the manifold first to replace the valve? And to refill the manifold after I am done? Is the 1-1/4" the only size for the radiant heat system? It is for a underfloor radiant heat. Thanks. Johnny
Asked by Johnny 13 years ago
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Most Radiant systems are open loop so make sure the incoming water is shut off to the system before removing the old valve. Usually very little water will come out if any at all during the valve replacement. It is recommended to put a small amount of plumbers grease on the O-ring before installation of the new valve. After the new valve is installed, turn the water back on and unsure there are no leaks. The 1-1/4" is a standard size for the valve.
Yes, the manifold has to be drained. Once the valve has been replaced you will need to refill the system. Keep a shop vac handy for any water coming out after you pull the old valve out. Usually the manifold is lower than the boiler, so some water may still be in the system. Good luck.
Installations can vary, but my experience two years ago in the house I rented was that you have to drain enough water to avoid a huge mess and avoid getting the valve electronics wet when you quickly swap the valve. My system had enough shut-off valves for the seven zones that I could isolate it reasonably well and avoid gravity draining water from the tubes and letting a lot of air get into the tubes and manifold. I assume you have a place to drain from so you can do a decent job of getting the air out of that zone once you've reassembled. One of the automatic valves I replaced had deteriorated so the valve head was missing, therefore it flowed constantly when the pump was running. I was unable to find the missing piece, but it didn't seem to restrict the flow, so it wasn't an issue. I also had a problem with the manifold gaskets leaking, so watch for that. I fixed the problems myself, because the cheap owner couldn't get anyone to fix it. He had two guys out over a couple of days who did less and charged $1,500! The heat was great, but the system wasn't maintained well. Good luck. Sent from my phone.
When I have replaced one of these valves I had to first shut the water to the floor system off, and then drain the manifold (it should have a drain on the end). There is not a lot of water in there, but it will make a mess. Replace the valve, open the water back up and the system will fill itself. I don't know if there are other sizes, mine is also