... Drain(6) Port Size: 1/8", 1/4", 3/8", 1/2", 3/4", 1"2. QAC- F.R.L (Three Combination) (1) All ... &Lubricator), 3000 Body Size, Port Size 1/8", Manual Drain TypeModel: QAC3000-01DQAC- F.R.L(Filter&Regulator&Lubricator), 3000 Body Size, Port ... Size 1/8", Auto Drain Type AC2000-02 Air ...