Quincy QRDT® Two-Stage, Oil-Less Reciprocating Air Compressors 10-30 HP

Clean, Oil-Less Air and Quincy Dependability

Quincy's QRDT series using two stages of compression can deliver up to 150 psig of pressure. With an air-cooled intercooler and aftercooler as standard equipment, Quincy QRDT compressors operate in the 780-1020 RPM range--slower and cooler than competing models. Its cast iron crankcase, ductile iron crankshaft, totally sealed bearings and deep cylinder fins for cooling are all signs of a solid machine that's built to last.

Quality features
Standard features, basic compressor

• Cast-iron crankcase and main bearing carrier for strength and durability
• One-piece, ductile iron connecting rods for strength and rigidity
• Totally sealed, prelubricated bearings for long life
• Hard-coat anodized and precision-honed aluminum cylinders / aluminum heads with deep fins for efficient heat dissipation
• Aluminum pistons facilitate heat dissipation and balancing
• All-polymeric reinforced PTFE piston and rider rings for low friction and precise piston orientation
• Hard-coat anodized and precision-hones aluminum cylinders and aluminum heads with deep fins for efficient heat dissipation
• Aluminum pistons facilitate heat dissipation and balancing
• All-polymeric reinforced PTFE piston and rider rings for low friction and precise piston orientation
• Hard-coated and Teflon impregnated valve plates for long life
• Stainless steel reed valves for long life, high efficiency, and low clearance volume
• Integral counterweights on ductile iron crankshaft for smooth operation
• Large-diameter ductile iron pulley for high inertia rim and smooth operation
• Lubricated and sealed needle bearings for the piston pin
• Free-floating piston pin designed for both the high-pressure rod and low-pressure rod
• HAT switches in head, HAT wiring kit module
• Air-cooled intercooler
• Integral air-cooled 15 Degrees F approach aftercooler (20, 25, 30 HP models)
• Head unloaders relieve second stage pressure, providing optimum piston pin life

Standard features, tank and base mounted units

• EPA high efficiency, ODP motor, on 230/460 volt
• OSHA-style beltguard
• Pressure switch for start-stop control
• Pressure switch set 110-125 PSIG
• Inlet filter/silencers

Standard features, tank mounted units

• ASME pedestal-type receivers (Cal OSHA 462-M approved)
• ASME coded pressure relief valves
• Manual tank drain and service valve

Options

• 208, 230, and 460 volt magnetic starters (mounted and wired)
• TEFC motors
• Dual control
• Intake mufflers
• Isolation pads
• Electric tank drain
• Galvanized receivers
• NEMA 4 controls
• Automatic alternating duplex control panels (mounted and wired)
• Head unloaders for constant speed operation

With basic compressors designed to meet NFPA99 requirements for hospital and medical compressed air, all Quincy QRDT models operate without oil, so you're assured of oil-less air. The QRDT's graphite gaskets are totally asbestos free, so the compressor complies with EPA health standards.