Today we’re going to talk about RV holding tanks. To start with, I wanted to mention something about RV holding tanks that I don’t think a lot of RVers are aware of. Many of the free dump stations available to RVers are closing because of chemicals that are harmful to septic systems and because RVers are abusing these dump stations. If we want to have access to these dump stations it is absolutely essential that we use septic safe chemicals (no formaldehyde), and that we clean up after ourselves and do not abuse dump stations.
Your RV has what is referred to as a gray water holding tank and a black water holding tank. The gray water holding 홀덤 tank collects dirty water from the kitchen sink, bathroom sink and shower. The black water holding tank is for the toilet. These tanks terminate into one main outlet used to empty the holding tanks. This is where we connect our sewer hose.
Make sure you have the required couplings and connectors. It may be necessary to attach two hoses together to reach the sewer connection. I recommend you only use heavy duty sewer hoses. Their not that expensive and they hold up much better. Keep a 10 foot hose and a 20 foot hose available. Do not pull or drag the sewer hose on the ground. This will cause it to tear or get pin holes in it.
To hook up the sewer hose make sure both valves are closed and remove the sewer cap. Make the connection by putting the hose adapter over the outlet and turn it clockwise until it locks securely in place. Take the other end of the hose over to the campground sewer connection. Use the necessary adapters to make the connection and get a good seal. It’s a good idea to place some weight over the hose so it doesn’t jump back out when you drain the tanks. It may be necessary to use some type of sewer hose support to get a good angle from the RV to the campground sewer connection so the tanks drain properly when you empty them. The small valve is for the gray water tank and the large valve is for the black water tank.
One golden rule for RV holding tanks is to never dump the black water tank until it is at least two thirds full. You want the tank nearly full so the weight and the gravity will force the contents of the tank to drain properly. Another golden rule is to never leave the black tank valve open at the campground and expect the toilet to drain or flush like the toilet in your home. It won’t work.
When the tanks are full, or nearly full always dump the black tank first, followed by the gray tank. The gray water tank should also be at least two thirds full. Dumping the gray water tank last will help to flush the sewer hose out.