Plews 24-404 Regulator Tru-Flate 'Compact Series' air line regulators employ a solid piston and balanced poppet for excellent performance and longer life as well as a non-rising knob for tight spaces The solid piston design is reliable for a broad range of demanding applications and is impervious to a wide range of oils and greases; better performance than a diaphragm design Features fast reverse flow capabilities, allowing installation where dual pressures are required; cast aluminum body with a comfortable, ribbed knob for fine adjustments 2 - 125 PSI range; 250 PSI maximum inlet pressure; 0 to 175 degrees F temperature range; 1/4-18 female NPT inlet/outlet; 2 full flow, 1/4-18 female NPT gauge ports; gauge included 55 SCFM (standard cubic feet per minute) with 100 PSI inlet pressure, 80 PSI no flow secondary setting and 10 PSI pressure drop; 6.4 inches tall