to be honest dude even in the unlikely event that someone does know the flow rate of oil into the charger the figures quoted for those Facet pumps will be meaningless anyway as they are assuming fuel is being pumped and not much thicker oil. The pump I had with my stand alone was the cheapest of the Facet rectangle ones, it only ran at a few PSI but that's fine. It's the same as the PSD kits used anyway. I don't remember the pump's part code unfortunately.
The main concern is using the pump for something it's not designed for. You need to use pretty thin oil, I used compressor oil in mine most of the time. Also some very thin fully synth oil should be ok.
I'd say it's pretty important when building your stand alone that you connect a pressure gauge to the oil outlet on the charger. I'd recommend using a mechanical gauge with a stainless braided hose from the outlet into the car. An electrical gauge will usually be too slow to update. Locate the gauge so it is easy to see while driving and keep an eye on it! There's a couple of threads on this forum about stand alones if you do a search.
The ideal solution is to use a proper electric oil pump but prices start at about £150.
I've also heard of people (seems popular in portugal) using pressure regulators on the oil feed line instead of a stand alone kit to stop oil pressure going to the charger from getting high and critically stopping it from surging which is what causes problems. Some just use restrictors on the line but I'm not really convinced these will do much good, an actual hydraulic pressure regulator should do a good job, not sure how much these cost though!
