Ordered some fittings from Grainger. Don’t know what it is with plumbing supply outlets but shipping is a gouge. But the order came right away and I threw in a couple extra different size elbows just in case and ended up using them. The tank is made for 3 x 1/2″ fittings and a 1.25″ fill. Since the pump has 3/4″ connections I got a 1/2″ x 3/4″ x 1/2″ tee so that it would drain from the 2 lower fittings into the 3/4″ which will prevent the 1/4″ different in size between the tank and pump from restricting flow.
I put the pump brackets that I made on the pump and began scoping out the mount point and planning where the hose and fittings will go. There is also (on the top of the tank side) the 1.25″ fill fitting and another 1/2″ fitting which will be used for a vent which will also overflow when the tank is full. I test fitted everything and then secured with stainless hose clamps. The hoses were a bear to get the fittings into so the hose clamps were somewhat of a “belt and suspenders” addition. All the plumbing before the pump is never under positive pressure.
I found that the clear mesh tubing I was using became pretty flexible if you soak in some water you heat for a minute or 2 in the microwave. Used a little dish soap and a dry towel to grab the hose and forced them on without too much trouble. When it all cooled down they were unmovable. Mounted the drain plumbing (which will later be connected to the pump) and the air vent/overflow. I like how it has some give to it but isn’t floppy. Wonder about things bouncing up off the road and making contact. At least the rubber will give some shock absorption to the plumbing. Hurricane Harvey is hanging out and providing time to get through the plumbing and wrap up the majority of the under-deck work. Thinking about how to caulk the trailer and lower the deck onto it by myself tomorrow.
NOTE: Not for potable water. This water system is for washing dishes, showers and washing hands. The pump is not rated for drinking water. Also, I did read that you can keep the tank from accumulating mold by adding a little bleach when you fill it. Pump is rated for 3 gallons/minute so you could take a 7 minute shower if using full blast. Have to do some test runs to see how that works. Pump shuts itself off at 35PSI. Still thinking about the shower. May go with a sink hose and sprayer for that.