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construct. air bleeder; air eliminator; air-purge valve; air-relief cock; vent valve; venting device; bleeder
green.tech. vent plug (llamrei)
Makarov. air vent; air-release valve; air-relief valve
plumb. air vent valve (slitely_mad)
воздухоотводчик: 5 phrases in 3 subjects
Construction3
Makarov1
Tengiz1