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check valves

STEAM DOCTOR
Member Posts: 1,465
what is the purpose of check valves on hw zones on steam boilers
0
Comments
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check valves
They exist to keep the zone from gravity feeding and to help keep the water in the zone0 -
thanks
does it matter if the check valves are above or below the water line and if they are before or after the purge valves0 -
check valves
if the entire loop is below the water level are the check valves necessary? also is it necessary to purge a loop that's below water level? if yes are two purge valves necessary or can the loop have a single purge valve and the boiler it self will function as the discharge valve? thanks0
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