SMC: AW30-F03E-B FRL Manual Drain C/W Gauge G3/8 This combination filter/regulator minimizes space and piping by integrating the two units into one. Features include a relieving regulator. The AW modular air preparation unit can be combined with other similar sized products. Size: 1/8 thread. Gauge port: G1/4. Comes with square embedded type pressure gauge with limit indicator. MPN: AW30-F03E-B FRL Manual Drain C/W Gauge G3/8 Attributes: MFR Part No.: AW30-F03E-A Port Size: G3/8in Product Type: Air Regulator