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How to Connect PVC Pipe to RV Sewer

If you own an RV and want to ensure proper waste management while on the road, knowing how to connect PVC pipe to the RV sewer system is crucial.

Properly connecting the pipes will help you maintain a clean and efficient waste disposal system, ensuring a hassle-free and enjoyable camping experience.

In this article, we will provide you with a step-by-step guide on how to connect PVC pipe to your RV sewer system, ensuring a seamless flow and avoiding any potential leaks or blockages.

Understanding the RV Sewer System

Before diving into the process of connecting PVC pipe to your RV sewer system, it is essential to have a basic understanding of how the system works.

Most RVs are equipped with a built-in wastewater tank and a sewer outlet.

The wastewater tank holds the liquid and solid waste generated while using the onboard toilet and sink.

When it’s time to empty the tank, the sewer outlet provides a connection point for attaching the PVC pipe.

Gathering the Required Materials

To begin the process of connecting PVC pipe to your RV sewer system, gather the following materials:

  • PVC pipe (4-inch diameter)
  • PVC fittings (elbows, couplings, and adapters)
  • Hose clamps
  • PVC pipe cutter
  • Screwdriver or wrench
  • Rubber gloves
  • Safety goggles

Step 1: Identify the Sewer Outlet on Your RV

The first step is to locate the sewer outlet on your RV.

This outlet is usually located on the side or rear of the vehicle, near the wastewater tank.

It is essential to identify the exact location before proceeding further.

Step 2: Choose the Right PVC Pipe and Fittings

Selecting the appropriate PVC pipe and fittings is crucial for a secure and leak-free connection.

Ensure that the PVC pipe has a 4-inch diameter and is suitable for sewer applications.

Additionally, choose fittings such as elbows, couplings, and adapters that match the diameter of the pipe and provide the necessary angles for your setup.

Step 3: Cut the PVC Pipe to the Required Length

Using a PVC pipe cutter, measure and cut the PVC pipe to the required length.

It should be long enough to extend from the RV sewer outlet to the sewer drain connection point.

Step 4: Connect the PVC Pipe to the RV Sewer Outlet

Attach the PVC pipe to the RV sewer outlet by sliding it onto the outlet and securing it tightly.

Ensure that the pipe is aligned properly and fully inserted to create a tight seal.

Step 5: Secure the Connection with Hose Clamps

To prevent any potential leaks, use hose clamps to secure the connection between the PVC pipe and the RV sewer outlet.

Tighten the clamps using a screwdriver or wrench until they are firmly in place.

Step 6: Connect the Other End of the PVC Pipe to the Sewer Drain

Once the connection to the RV sewer outlet is secure, connect the other end of the PVC pipe to the sewer drain.

Ensure that the pipe fits snugly into the drain connection to prevent any leaks or odors.

Step 7: Test the Connection for Leaks

After completing the connection, it is crucial to test it for leaks.

Run water through the system and inspect all the connections, looking for any signs of leakage.

If any leaks are found, adjust the fittings or tighten the hose clamps accordingly.

Common FAQs

Can I use regular PVC pipe for my RV sewer connection?

It is recommended to use PVC pipe specifically designed for sewer applications. Regular PVC pipes may not withstand the harsh conditions and chemicals involved in the RV sewer system.

How deep should the PVC pipe be buried?

The PVC pipe connecting the RV sewer system to the sewer drain should be buried at least 12 inches underground to ensure proper protection and prevent damage.

Can I use glue to connect the PVC pipe fittings?

Yes, you can use PVC glue to provide additional security and prevent leaks. Apply the glue to both the pipe and fittings, following the manufacturer’s instructions.

What type of hose clamps should I use?

Stainless steel hose clamps are recommended for securing the PVC pipe connections. They provide durability and resistance to corrosion.

Is it necessary to use a sewer hose support?

Using a sewer hose support is not mandatory but highly recommended. It helps to maintain a consistent slope and prevents any sagging or blockages in the sewer hose.

How often should I clean my RV sewer system?

Regular cleaning and maintenance of the RV sewer system are essential for optimal performance. It is recommended to clean the system after each use and perform a thorough cleaning at least once every few months.


Knowing how to connect PVC pipe to your RV sewer system is essential for maintaining a functional and hygienic waste disposal setup.

By following the step-by-step guide outlined in this article, you can ensure a secure connection and prevent any potential leaks or blockages.

Remember to gather the necessary materials, cut the PVC pipe to the required length, and secure the connections with hose clamps.

With a well-connected sewer system, you can enjoy your RV adventures with peace of mind and a clean environment.