COMMERCIAL COLD WATER ELECTRIC 2/5/7.5 HP Electric Motors 2.2 – 4 GPM 1000 – 3600 PSI COMMERCIAL COLD WATER GAS 6.5/13/14/15 HP Gasoline Engine 3 – 4 GPM 2700 – 4000 PSI INDUSTRIAL COLD WATER ELECTRIC 5/7.5/10/15/20/50 HP Electric Motors 4 – 12 GPM 1200 – 8000 PSI INDUSTRIAL COLD WATER GAS & DIESEL 13/14/25 HP Gasoline & 9.8/26/58 HP Diesel Engines 4 – 10 GPM & 4 – 8 GPM 3500 – 7000 PSI & 3200 – 8000 PSI