Fresh water tanks in RVs contain bypass valves to redirect the water flow during winterization and storage. Many people close the supply to the water and water heater tank to reduce the risk of freezing during cold days.
How To Bypass Fresh Water Tank on RV? You can bypass the fresh water tank by locating the water pump according to the type of your RV. You can see the bypass valve near the water pump. Turn off the valve located on the blue line to supply the water to the tank. You can see another valve and turn it on to redirect the water to the plumbing system. Moreover, you should also turn off the valve that allows the backfilling of the water heater.
You can directly connect the fresh water tank to the plumbing system with the city water supply for conservation purposes. However, a small quantity of water cannot cause the bursting of lines, hoses, and tanks to freeze.
How do you bypass a fresh water tank on an RV?
Water pumps are located in different places depending on the type and model of RVs.
Some of these are located under the dinette area. However, some motorhomes do not contain a dinette area because of limited space so that you can find it in storage compartments and cabinets.
You can see the bypass valves near the water pump that are responsible for redirecting the water flow. I also did this procedure to redirect the water flow from the external source to the plumbing system instead of using a tank during winter because of freezing risks.
You have to close the valve that supplies water to the fresh water and water heater tank. In addition, open the valve that redirects the water from an external source to the plumbing system.
It is necessary to inspect the system after adjusting the valve’s position. Adjust the water pressure of the external source and check leakages in pipes that come from cracking and loose connections.
Moreover, you should also ensure that fresh water and water heater tanks are not filling after connecting the hose to the city water supply.
Why do people bypass a fresh water tank on an RV?
Many people bypass their RV’s fresh water tanks instead of using anti-freeze solutions to avoid freezing and bursting of the plumbing system, which leads to water wastage and damage to interior parts. Moreover, bypassing is better in winter to ensure water supply throughout the journey for a pleasant experience.
Many people prefer to winterize their RV during cold temperatures to reduce the risk of water freezing. My friend also did the same because he lives in a state where the temperature drops significantly in winter.
He told me that water freezes in their pipes during winter, and they have to use anti-freeze solutions for it. Anti-freeze solutions contain chemicals that help lower the freezing point of water.
Winterization is challenging because it is difficult to drain the solution properly from the plumbing system. Bypassing is the best method because you do not have to add anti-freeze solutions to the plumbing system during cold weather.
You can connect the plumbing system to the external water sources. You do not have to store water in water heaters and fresh water tanks. Ensure that these are empty and do not contain water before bypassing the system.
Use fresh water from an external source
You can also do this to ensure the freshwater supply from the external source. Water in these tanks is vulnerable to contamination with their age, and you can see their color turns white to yellow.
The issue comes because of bacterial growth and incorrectly cleaned tanks. However, you can connect the hoses with the city or campground water supply.
You can use fresh and clean water for bathing and washing dishes.
Many people park their RVs at campgrounds and RV parks for night stays. Some of these campgrounds and parking spots have specific noise restrictions.
You cannot turn on any noise-producing devices there because it can affect other people. Moreover, these campgrounds also contain a water supply, and you can connect your campers or motorhomes with them instead of using a fresh water tank.
You can conserve the tank water by connecting it with the campground supply.
You have to sanitize your RV’s plumbing system after your long trip to keep the tank and water lines clean. Algae and molds can grow on the side walls of the plumbing system because of humid and cold environments.
Connect the outside water hoses with the external source and run the pressurized water through the plumbing system to remove contaminants and ensure a fresh water supply.
It is a better and safer way to sanitize the plumbing system instead of using the bleaching solutions that cause erosion of plumbing lines.
Weight considerations matter a lot while towing RVs with vehicles. You have to maintain their weight according to the towing capabilities of the cars.
You cannot overload your campers or trailers because it can affect the working of towing vehicles. In addition, it can also affect the fuel economy.
It is challenging for you to move on inclined roads with heavy loads. You can empty your fresh water tanks to decrease the overall weight and connect it with an external water source.
Why is my freshwater tank filling when connected to city water?
Many people complain that their fresh water tank keeps filling during the bypassing procedure, which can lead to a damaging situation. High water pressure in the plumbing system increases the risk of bursting lines and loose connections.
The check valve that is located on the water pump is responsible for redirecting the flow and preventing water entry into the tank. Sometimes, check valves fail to perform their functioning and cause backfilling of the fresh and water heater tank.
The situation becomes worse during winter because of freezing. In addition, the risk of failure of check valves increases because of their age and continuous functioning.
The problem also comes because of debris built up, which prevents them from closing completely. Moreover, I also faced the same issue last week and checked the built-up valve, which was stuck in the open position.
I saw the corrosion on its sides, which was causing it to stick. Furthermore, mineral buildup, incorrect installation, and faulty spring mechanisms affect the usual functioning.
Things to consider while bypassing fresh water tank on RV
You should inspect the plumbing system to check for leakages. Leakages can damage the wooden components and make them soft and spongy.
In addition, leakages also increase the chances of water wastage. I always prefer to check the valve’s position while bypassing. Moreover, I also emptied the fresh water tank to reduce the risk of freezing because of leftover water.
You should close the valve that supplies water to the tank and open the one that is connected to the plumbing system. Prefer to use clean water sources for hygiene and sanitation.
One of my friends also did this last year because he wanted to conserve the freshwater tank. He connected the campground supply with the hose and installed the filters to remove contaminants and ensure cleanliness.
Monitor the water pressure of the external source and adjust it according to the pipe’s diameter. Pressure monitoring is necessary because it can damage the lines and lead to their bursting.