fuel oil pumps

Bryan_16

Sooooo, what happens when you spin a 1725 rpm pump 3450 rpm's?

icesailor

1725 Vs. 3450 RPM

Nothing good.

The 1725 RPM pump, connected to a 3450 motor will pump at a much higher rated pressure than intended, and and may cavitate and out gas.

If you use a 1725 motor on a 3450 pump, the pump won't deliver enough pressure to open the fuel delivery valve in the pump.

Why do you ask?

Charlie Masone

A pumps

Are identical except for the cone valve setting. A 3450 A pump will have a cutoff of around 2600 rpm and the 1725 A pump cutoff will be aroound 1800 (been too long to remember.) The pump pressure is controled by a spring loaded regulator so the pressure will not change and the gearsets of course are identical.



So if you were to put a 1725 A pump on a 3450 burner it would have exactly the same combustion results however flame startup and especially cutoff would suffer, causing excessive soot accumulation. if you use it with a solenoid valve you will be ok. A 3450 pump would never get up to RPM neccesarry to open the cone valve and therefore it would not operate.

Bryan_16

why

I inadvertently did this and everything is working so far. Thats why I ask.