Wilkerson manual drain compact filter/regulator with transparent bowl and guard. 5 Micron reusable element. 5oz bowl. Self-relieving standard. Diaphragm operated. Quick-disconnect bowl guard with integral plastic bowl and safety latch standard. Two 1/4" gauge ports are provided in either side of the regulator body for installation of a gauge or to use as an additional outlet port. Plug unused port(s). Supplied with GC230 gauge. Maximum operating condition: 150 PSIG (10.3 bar) and 32 degree F to 125 degree F (0 degree C to 52 degree C). Over-under units are space savers and provide for installation in tight areas. One common inlet/outlet for both filter and regulator saves on piping costs. 0-125 PSIG adjusting range. Designed for air service only.