Medium Duty GX Pump
GX Pump 5K2
5,800 PSI max · Water + fan cooled
Dual-piston, 4-stage, 1200W, 5800 PSI. Fills a 6.8L tank in about 45 minutes. Rated for 10 hours continuous. Sold direct by GX.
Compressors / By Price
PCP Compressors Over $1,500
Serious fill stations for clubs, shops and heavy users. Ranges are approximate; Amazon prices change often, so check the current price before you buy.
2 compressors
Narrow it down further → Medium Duty 
Medium Duty Air Venturi
Air Venturi EVO-310 by Hill
4,500 PSI max · Fan-cooled, automatic cool-down cycle
Hill-designed 110V bench compressor. 4500 PSI, adjustable auto-stop, automatic purge and cool-down, 75 dB.