Fuel Pump Question

Tony Massi

I have an A pump on a 2 pipe system with a under ground tank. The boiler fires a gallon how much oil goes thru the pump in an hour?

Jim Davis_3

oil pump gph

Depending on the pump 18-25 gallons per hour.  2-line systems take all the warm oil that was in the lines indoors during the off-cycle back to the tank and brings in colder oil.  2-stage pumps with 1 line are better than 2 lines. 

Robert O'Brien

"2-stage pumps with 1 line are better than 2 lines."

True enough,but why use a 2 stage pump on single pipe at all?

icesailor

2 Stage Pumps:

2 Stage pumps will deliver higher pressures and higher suctions but they don't deliver more fuel unless so rated.

If you want to solve the cold oil problem, install a Tigerloop. They develop more suction pressure and only use what fuel it needs through the nozzle. While the fuel pump is pumping through the Tigerloop, the resistance and friction warms the oil for better atomization and combustion.

Tigerloops rule.

Tony Massi

2 Stage Pumps

I thought a 2 stage pump on a single line is only a 1 stage pump. To be a 2 stage  pump you would have to install a by pass plug and use two pipes.  Either a return line to the tank or a Tiger loop.

Robert O'Brien

Tony

You're correct,the extra gear set does nothing on single pipe. A 2 stage pump does not deliver higher pressure than 1 stage,it does have a higher vacuum rating,which is meaningless,oil will start to deaerate at around 6" anyway.