Our plumbing is not done as of this point but we are close. From the beginning of our system, we have a two-way fill valve with a locking door. Right now we can either connect a water supply directly to our lines (city fill), or just fill up our fresh water tanks through the gravity fill port. If connected to the city fill side, the water bypasses the water pump and Ts directly to a four-way manifold then to the cold water fixtures, or to the hot water heater, then through a four-way manifold followed by the hot water fixtures. All of the water supply lines in the bus are piped with PEX and connections made with quick connect or crimp fittings.
If we are using the gravity fill to top of our fresh water tanks then the system begins with vinyl tubbing to shut of valves. We have 1/4 turn shut of valves for both tanks. This allows us to control which tank we want to feed water into. Both tanks have a vent line at the top that allow air to exit the tank as water is being displaced to avoid the chugging effect. At the bottom of each tank, water lines run to our Surflo water pump that then meets up at the same T as the city fill branching either to the cold manifold or hot water heater. Our water pump has a built in check valve which prevents a back flow through system if were hooked up to the city fill. We have three drains, plus our urine diverter which ties into our vanity waste line. There are two sinks plus a shower which all tie together and go to our holding tanks. To support our holding tanks, we used threaded rod and unistrut. The rod was cut to desired length then holes were drilled into existing steel beams under the bus. The rod was then fed through each hole and secured with nuts washers split washers and the same on the other side of the beam. A height was then determined for where the tanks would be held. Then more nuts and washers were used before sliding unistrut to that height then our holding tanks followed by another unistrut with nuts and bolts. Flat stock steel was then attached on the out side edge connecting both top and bottom struts to help hold them true.
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September 2018
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