Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.

If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Need to contact us? Visit

Installing check valves in a two zone system.

JackWJackW Member Posts: 131
I am redoing my radiant heating system in my Morton building, all piping is 3/4". It is a two zone system, each zone is controlled by a pump. In the old setup I kept the temperature in zone 2 higher and never had to set the thermostat in zone 1 because the zone 2 pump would pull water past the zone 1 pump heating zone 1, not as warm as zone 2 but ok. I want to put check valves ahead of the pumps to prevent this parasitic draw but I'm afraid the 3/4" check valves will restrict the flow. When in the open position the stopper hangs partially down which I would think would restrict the water flow. Is this a concern or not? Any thoughts on this will be greatly appreciated.



Sign In or Register to comment.


It looks like you're new here. If you want to get involved, click one of these buttons!