The Reliance On Tap Water Pump/Shower arrived today.
It's a very nice and versatile unit for $40. I filled a one quart jug and dropped the pump unit in. It delivers a flow rate that seems to be around 1 gpm when held over my head (I'm over 6' tall).
The picture below shows what comes in the box. Underneath is the silver, high-quality drawstring plastic bag that is supplied to hold it all conveniently without any small amount of remaining water getting to your other gear.
On the left is the black plastic battery holder unit. The top pops open, where you can install 8 D cell batteries. There is a 12 v power receptacle on the top at one end. The power plug on the handle/pump assembly plus into the battery holder or you can simply plug it into a receptacle in your vehicle. Very nice dual-use technology. I don't plan on using the battery pack, since I'm set-up to use 12 v power in camp and can simply plug it into the extension cord.
Starting clockwise from the orange squarish item in the group of accessories in the middle of the silver bag, it is a clip you can mount several ways to provide a place to hangup the shower head.
Next is a folding hook that can also be used to hangup the shower head.
Next is a spare washer, one of two supplied. I already installed the other washer on the end of the water line where the shower head connects to it.
Next is the suction cup. It can be used to attach the orange shower head holder to a tile wall, etc.
Then there is an adapter that can go on the end of the water line instead of the shower head. It provides a way to connect any standard hose to the pump.
Finally, on the right is the pump and shower head, with attached hose and power cords. The orange pump is dropped into the water. Reliance supplies a large rubber plug threaded onto the hose and power line that fits the outlets in the many containers in their product line. This will also fit many other water containers. The hose itself is 7 foot long. The power cord is roughly twice as long and it has the standard 12 v power plug on it to connect to either the battery pack or a standard 12 v receptacle. Located on it is the waterproof power switch.
While it seems to be available from relatively few retailers, this is a great product. I have no experience with long term reliability yet, but the unit is very well-constructed of high quality parts. It seems to be the sort of thing no expedition rig should be without in its kit, because it can be used for bathing, moving water, or any other task where most non-flammable liquids need to be pumped. And an excellent value, considering the low retail price.