I used this check valve on a commercial building with a large water heater and a hot water recirculation loop. I used a propane torch that has high heat output, (maybe it is a turbo torch?) And I used a Mapp Gas cylinder to help make sure I would get sufficient heat for the soldering job. This is a large pieces of brass to solder, but it worked.
The check valve has a spring and a basic operation that seems to work well.
Solar guy
Denver,CO
2 years ago
Verified Buyer
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