Is anyone aware of a very small single phase pump that is listed. around 100 GPM @ 65. 7.5 HP or 10 HP?

Thanks Mike

Greg, its not the pump, but the motor being listed for fire pump use. We have been able to source one mfg who will make single phase motors to fire pump requirements up to 15 hp. So we can provide up to 250 gpm @ 69 psi from a 3x3 vertical in-line UL Listed pump.

For "years" NFPA 20 required the fire pump controllers "locked rotor" trip based on 600% of the motor's full load current. This was because most typical ODP motors use on the average range of fire pumps, then and now, were code F or G so that's what the breakers were designed around.

Apparently some of the people in the industry "didn't get the memo" and started slapping energy efficient motors on fire pumps when they became popular a few years back. The higher locked rotor currents, 7 X 8 times FLA resulted in premature tripping times between the allotted 300% pick up and 600% specified in NFPA 20. As a result, the motors are now required to be listed. Now you get the same motor you had before, only paying a lot more for the listing.

There may have also been a few disasters shipped out the door with the first generation of motors used on variable frequency drives that were not rated for them - bearings design, and winding temperature and insulation values. That's also now covered in 2010 NFPA 20, 9.5.1.4. It appears the "change" on this paragraph between 2007 and 2010 fell through the cracks.

Xylem, ITT-AC Fire Pump Manufacture has a series 1580, 100gpm@65psi UL listed fire pump, 10hp, 3600rpm, 60HZ, 1/230v, ODP. Also can be pre assembled in a configupac. Wired, piped and will fit through a std. Doorway.

Shouldn't someone be asking if this is Nfpa 20 or not? In this size it could be 13, requiring a #20 pump, or 13d which does not. Huge cost difference, since that does matter to many of us.

George is correct. This small of a system seems more around residential use, hence my recommendation above. Big difference in pump and controller depending on the location and application - residential (13D) or not.

KSB have a few VdS-Listed jockeypump-style fire Vertical high-pressure pumps, called Movitec, probably completely different from what you are used to, but I believe it fits within NFPA 20 because it's under 500USgpm.

I thank-you all for your input, the job was NFPA-13R which requires a listed pump. It is no longer a viable project, but i have learned a lot to say the least.