Air Combination Unit(F.R.L. Set), Components: MAFR401+MAL401, Port Diameter Code: 8A(1/4), Appearance Color: Silver&Black, Type: Standard, Pressure Gauge: Pressure Gauge(PG-20), Drain Valve: Semi-Auto Drain Water, Level Switch: With Level Switch(MLF400), Pressure Sensor: Pressure Sensor(MPS Series), Flow Direction: Left¡úRight, Digital Pressure Sensor: Without, Filtration Rating: 40¦Ìm, Branch Port Diameter Code: T Type Connector Block1/2, Shut-off Valve: MVHR-400S-3H-DC24-L(Electric-Control Type), Port Thread: G Thread