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B&G Hydrotrol flow control valves
Is anyone familiar with B&G Hydrotrol valves that can comment on their use in radiant systems? Possibly versus using check valves that come with some circulators such as Grundfos? Years ago, when setting up a system in a very tall 1800's house, I was advised to remove the check valves from small Grundfos circulators, and instead use the B&G Hydrotrol to prevent gravity circulation.
I'm working out my layout for my single story ranch house system, with the boiler in the basement. There are not any significant height issues. There will be some remote mounted manifolds to serve nearby heating loads, with some sort of zone actuator, and a Grundfos Alpha 2. Is there any advantage to using the Hydrotrol valve in that application? I have some left over, that are NIB. If not, I'll put them up for sale on this site. In our first project, we had multiple pumps, each with a Hydrotrol and bypass. I don't know how this would work with just one circulator, and 5-6 zones. Use one in conjunction with a zone valve?
Thanks for any input!