An automatic air vent connects to hydronic piping through a gate or ball shutoff valve and a reducer. The drain line uses copper tubing routed to the nearest floor receptor and is concealed in finished areas. Pipe sizing is specified at two times larger than the connecting piping, with twelve-inch spacing dimensions indicated.
REDUCER AUTOMATIC AIR VENT COPPER TUBING DRAIN PIPED TO NEAREST FLOOR RECEPTOR. ROUTE CONCEALED IN FINISHED AREAS. PIPE SIZE 2 x LARGER THAN CONNECTING PIPING HYDRONIC PIPING SEE DWGS FOR CONT GATE OR BALL SHUTOFF VALVE 12" 12"
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