What is a bayonet fitting on a RV sewer hose?
Table of Contents
Sewer hose bayonet fitting provides a secure connection to a lug fitting. Use it to connect one hose to another or to connect your hose to your RV.
Are RV sewer hoses Universal?
Are RV sewer hoses universal? For the most part, yes. RV sewer hoses are designed to fit standard 3-inch RV drainpipes, which covers all newer RVs and motor homes. Older RVs may use a different-size drainpipe, which requires an adapter to work with a 3-inch RV waste hose.
Are all RV sewer hoses interchangeable?

Modern RVs have sewer hoses that are the same size. These are 3-inch diameter drain hoses that come with bayonet-style fittings to connect to your trailer or motorhome. Because the diameter is standardized, as are the way they are connected, RV sewer hoses are universal and should fit any modern recreational vehicle.
What diameter is RV sewer hose?
Regardless of the size of the sewer inlet in a ground site, RVs must always sport a 3-inch hose with 3-inch twist-and-lock fitting. Be reminded though that there generally 2 types of RV wastewater tanks. Gray water tank that comes from your sink generally utilizes a 1 and 1/2-inch diameter tubing.
What size is the RV sewer hose?
Standard RV sewer hoses are 3 inches in diameter with lugs and fittings on opposing ends. RV sewer connections are generally universal, but having adapters on hand can keep you prepared for any dump station scenario. There’s a huge variety of situations at both dump stations and full hook-up campsites.

Why do RVs have white hoses?
Water doesn’t stay in your hose for very long, so contamination from lead and other chemicals is probably limited, but really there isn’t any price difference between drinking-safe hoses and those that aren’t tested, so it’s inexpensive peace of mind to just buy the white hose. And your water will taste a lot better.
What size are RV plumbing fittings?
A majority of modern RV’s use PEX tubing and piping because of its several benefits. As we say above, there are two standard sizes of PEX used in RVs – 3/8 inch and 1/2 inch. So if you are replacing your lines, make sure you get the proper size to avoid leaks and other issues.
https://www.youtube.com/watch?v=eWM4vdaw9oA