<HTML>On my big boat I use an engine driven feed and vacuum pump for normal running, but I also put together an electric feed pump. I used a 1200-PSI Teel three-piston pump and a permanent magnet DC 1675 RPM sealed continuous duty motor. Its only ½ HP and at 300 PSI I have no problem feeding the boiler very fast. More then fifty gal per hour. I have used this pump to Hydro the Stanley at 1000 PSI. About 750 PSI it starts to slow down, and stalls out at 1100 PSI. At 300 PSI it draws about 16 Amp at 12V
The setup is belt driven with a two-inch pulley on the motor and six on the pump. I bought two of these motors and use one on the 12V oil burner. I think they cost around two hundred and twenty dollars at the time. A one HP would do a 1000PSI car boiler with at least 50 gal per Hr, or say 400 Lb of steam per HR
Rolly
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