. (Mech.) A suction valve or check valve at the lower end of a pipe; esp., such a valve in a steam-engine condenser opening to the air pump. [ Webster 1913 Suppl. ]
. (Mech.) A suction valve or check valve at the lower end of a pipe; esp., such a valve in a steam-engine condenser opening to the air pump. [ Webster 1913 Suppl. ]