ECO CAF® 3-S and ECO CAF® 3-OG Compressed Air Foam System is designed to meet the budgetary restraints. Both use no outside pressure vessel to operate 100 - 120 PSI from a standard air compressor. ECO CAF® 3 dispenses approximately 30 gallons of finished foam. Light weight and compact, the ECO CAF® 3 can use any style of foam including Class A, B, AFFF and AR foams. In a time when everyone is feeling the pinch, ECO CAF® is leading the way with effective, economical solutions for today's fire fighting needs. 3-S includes standard gauge. 3-OG includes oil fulled gauge.