Attributes . Automatic Drain; Metal Bowl; F03 series Filter has a 5 micron element and a .5 oz. bowl; R03 series Regulator is self-relieving with a 2-125 PSI adjusting range, a balanced valve design and is supplied with a GC620 gauge. L03 series Lubricator has a 1 oz. bowl, an adjustable oil feed and a full view sight dome; (2) adapters are included . Names