I used a Flojet Quiet Quad II water pump from Camping World ($70) only because it was easily available, designed to pump water, and is self-priming. We have an EB-50 with a water heater so I mounted the pump inside the water heater "cabinet". The piping configuration was based primarily on the availability of various couplings available at the hardware store. The inlet to the pump is some flexible pipe and a male water hose fitting which extends through the water heater cabinet. From that fitting, I can attach a 2' long piece of reinforced water hose and to that, a piece of 1/2" PVC bonded to a 90 degree PVC fitting. That lets me insert the PVC pipe into the jerry can and suck water from the bottom of the jerry can. The reinforced water hose is probably overkill but it keeps the hose from collapsing.
The outlet of the pump is connected to a length of reinforced garden hose which extends snakes through the inverter box to the water tank (under the sofa in our case). Since I don't need to fill the water tank from inside the van anymore, I removed the SMB cap and permanently installed a 90 degree fitting which connects to this water hose. The on/off electrical switch (12v) for the pump is on the rear of the water heater box next to the water hose fitting.
To use the setup, I hook up 2' long hose and PVC pipe to the connection at the rear of our van, turn the SMB valve on the water tank to the "fill" position, and turn on the pump. The result...no more filling of the tank from inside the van.
If you need more information, let me know...
'01 Ford EB50p Quigley 4WD