BDV — Blow Down Valve
A small ball valve that is installed on the aboveground end of an extended drain line. This valve also serves to vent body cavity pressure in the «block and bleed» mode.
BDV — Blow Down Valve
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A small ball valve that is installed on the aboveground end of an extended drain line. This valve also serves to vent body cavity pressure in the «block and bleed» mode.