Our ACGP Silent Air Compressor is clean, ultra quiet, portable, and more convenient than bottled air supplies. It offers a 3.5 liter tank capacity that is large enough to run multiple workstations. The fast filling and economical ACWS can supply air to any workstation or OTS system. Our compressors operates intermittently based on air usage; monitored by a sensor that maintains the reserve tank’s preset minimum pressure. All required hardware including a safety valve, gauges, outlet cocks, fittings and drain comes standard. Even a high-grade air filter/regulator is included. There’s nothing more to purchase.