Valve masani ile fa'agaioiina o le fa'amamāina, lubrication, ga'o metotia Fa'asoa O a va'a masani o lo'o fa'aogaina ile feso'otaiga vevela?
Valve masani ile fa'agaioiina o le fa'amamāina, lubrication, ga'o metotia Fa'asoa O a va'a masani o lo'o fa'aogaina ile feso'otaiga vevela? Valve trapezoidal filo, valve stem nut ma lagolago vaega fa'ase'e, vaega fa'apipi'i, mea fa'apipi'i ma anufe, vaega fa'afefete anufe ma isi vaega ma...
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