Pumping and filter question.

[ReefBlue]

I've got a 3/4hp pump from northern tool and it screams when I run a batch for filtration.

I'm going through a home depot filter then into a 2u permacool water separator.

It is really pushing hard to get it through.


Would using it as a puller instead of a pusher work better?

I was almost getting a trickle tonight. I bypassed the 2u filter/separator and it ran good, so it is the 2u filter causing the problems.

Is the 5u home depot filter good? I know gas station filters are in the 20u area, I trust my truck's water separator, so is the 2u filter really necessary?

[wilson & Co]

gotta heat it up good to flow through 2u

[4micaman]

Are you mixing any #2 with the oil, before you filter it? The thicker viscosity is what's hampering your flow IMO.

Is the 5u home depot filter good? I know gas station filters are in the 20u area, I trust my truck's water separator, so is the 2u filter really necessary?

Can't comment on the HD filter. True, most pump filters are 20 micron but, it's a difference in product being filtered that makes this a mute point... IMO at least. Even with a good supplier of WMO from strictly diesel equipment (no contamination from a gasser), the finer filtration you can sustain, the better off your fuel system will cope.

I wouldn't settle for less than 2u, if I were you.

[LunaTech]

I just use a air diaphragm pump. I have seen them on e-bay for around $80. The lower flow through the 2 micron doesn't hurt it, it just stops until the pressure drops and then it cycles again and I also have a ball valve on the air hookup so I can control cycle rate. Filter straight WMO at room (basement) temp no problem.

[ReefBlue]

This just in:

Plugged a fuel filter on the way to work this morning. I had to do a roadside repair with an onboard spare. Fleetfilter.com, here I come.

The other night I was in a pinch, so I put in 5 gallons of 5u filtered stuff and added 5 gallons of diesel. I noticed a rough idle before I did that, so I don't know that not filtering to 2u was the exact cause, but I'm sure it didn't help.