What You’ll Need
Pen and paper
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There are three classes of tanks that can be mounted as a holding tank for an RV. The first type of tank lets you to hold fresh water to drink, shower, do the dishes, or flush your toilet. The second type of tank, called a “gray-water tank,” keeps wastewater from all drains, except for toilets. And, the last type of tank, or a “black-water holding tank,” keeps liquid and solid waste from the toilet. No matter what type of tank you want to install, you can complete your RV project with the guide below.
Step 1 – Choose Your Holding-Tank Material
Holding tanks are produced from different types of materials. They can be made from plastic, polyethylene, and acrylonitrile-butadiene-styrene, or ABS. Decide which material best suites your budget and application.
Step 2 – Draw out Your RV Design
Sketch the outline of your RV and decide where the best found is for your holding tank. Keep in mind where the plumbing fixtures are found on your RV. You will want to be specific in your drawings, making sure you mark where the toilet, sinks, and shower fixtures are found.
Step 3 – Draw in the Holding Tanks
Next, outline where the holding tanks are to be mounted. For a black holding tank, you will want your toilet to be positioned over top of it. A gray tank should be between the shower and sink. A fresh-water tank should be centrally placed to make hooking it up to the shower, sinks, and toilet an easy job.
Step 4 – Mount the Fresh-Water Pump
Follow the directions written on the water pump to properly install it. Generally, you will need to mount the pump between your fresh-water plumbing and fresh-water tank. Mounting it here will help to pressurize the fresh water that will be delivered to the faucets, shower, and toilet.
Pay attention to the manufacturer’s instructions relative to the type of wiring required during this portion of the installation. You will have to install the exact type and gauge of wire for your specific water pump.
Step 5 – Mount the Black and Gray Holding Tanks
The black holding tank is the most vital tank. The size of this tank should reflect your individual travel needs. For example, how far will you travel between camps without facilities to empty the tanks? In addition, Make sure your holding tank has fittings in an easy-to-reach area. Most manufacturers will fix the fittings to your specifications.
Mount the tanks based on the manufacturer’s provided directions. If you are installing a large set of tanks, you will want to buy and install additional support bars or straps for extra security measures.
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Step 6 – Maintain Your Tanks
Check on your tanks often to be sure they are working properly. Older tanks can become loose, damaged, or cracked. However, repairing is an easy project to complete, too.