VEVOR 1500W Four-Cylinder (Coltri-Style)

Overview

VEVOR's take on the Coltri-style dive compressor. The layout is clearly patterned after Coltri's machines, but it's not an exact copy, and it's not built to Coltri's standards. Four cylinders and four compression stages, driven by a 1500W motor on 120V, put out 60 L/min at up to 4500 PSI (30 MPa). VEVOR rates it at about 35 minutes to fill a 6.8L tank from empty to 4500 PSI, and 40 minutes to fill a 12L scuba tank to 2900 PSI. Air passes through an oil/water separator plus an activated carbon and molecular sieve filter. Cooling is a single large fan, with no water loop. It stops automatically at your preset pressure. Like VEVOR's 2200W dive unit, it's oil-lubricated (VEVOR specifies EC750 food-grade oil) and rated at 80 dB. Amazon feedback is very thin so far (a single 1-star review at the time of writing). If you want the real thing for a club, shop, or dive operation, request a Coltri quote.