backflow preventor valve
Posted by duke on November 21, 2002 at 03:33:13:
I'm installing a backflow preventor valve(1/2") on a new boiler. The boiler has a domestic hot water coil with a presure relief valve (3/4"). Can I connect the vent off the backflow preventor to the relief valve's drain pipe thru a metatl/metal check valve? The floor is wood and has no drains except from the a pipe from the coil's valve thru the floor leading out doors. Boiler relief valve is seperate pipe.

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