Valterra RV Sewer Adapters: Bayonet, Threaded Elbows & EZ Coupler Parts

RV sewer fittings are not all the same connection. At the RV, a bayonet joint joins a hose or extension to the waste outlet. At the dump station, a sewer elbow may need to seat into an inlet or engage a threaded opening. Valterra's EZ Coupler and ClearView parts handle different positions in this hookup, and the correct choice depends on where the fitting goes, the matching hook-and-lug connection, and the campground inlet.

Which sewer fitting do you need?

How the fittings relate to a sewer hookup

The sequence below shows the connection positions for a typical single-hose RV setup. The fittings shown are alternatives, not a list of parts that must all be purchased together.

View Valterra adapters and connector kits

T1022 — ClearView 10-inch bayonet extension

This clear 10-inch fitting extends the waste outlet to a more accessible point. It uses a standard matching bayonet connection rather than a bonded pipe joint; confirm the hooks and lugs on your existing setup.

View T1022

F02-3112CL — Clear EZ Coupler 90-degree elbow

The clear 90-degree fitting connects a compatible bayonet-style sewer hose end to a dump-station inlet. Valterra lists 3-inch, 3½-inch and 4-inch thread choices; choose only the profile that matches the receiving inlet.

View F02-3112CL

F02-3112 — Red EZ Coupler 90-degree elbow

This red 90-degree fitting has a standard bayonet connection and multiple threaded dump-inlet options. Valterra lists six connection arrangements; match the actual station inlet rather than assuming any outlet will fit.

View F02-3112

F02-3305VP — EZ Coupler elbow with thread attachment

Valterra supplies this as a red EZ Coupler 90-degree elbow together with a sewer thread attachment. It is a distinct package from the one-piece F02-3112 adapter; compare the existing fittings before ordering.

View F02-3305VP

F02-3303 — Three-piece EZ Coupler hose fitting system

The F02-3303 three-piece set combines a valve-to-hose adapter, a coupler and a 90-degree elbow for a compatible EZ Coupler sewer-hose arrangement. Check your hose diameter and the connection at each end before fitting the set.

View F02-3303

Bayonet hooks and lugs versus sewer threads

Bayonet hooks rotate onto the matching lugs on the adjacent fitting. That is different from the threads at the dump-station end of an adapter. The red and clear F02-3112 elbows both provide the standard bayonet-style hose connection and Valterra-listed 3-inch, 3½-inch and 4-inch thread choices. Their colour and visibility differ, but the actual connection still needs to match the station inlet.

The F02-3305VP is an elbow packaged with a sewer thread attachment, while the F02-3303 supplies three hose-fitting components. Neither should be mistaken for the 10-inch T1022, which extends the bayonet connection near the RV. A clear fitting helps you observe flow during draining, but it does not replace checking the hose and seals for leaks.

Check these details before buying

1. Identify which end needs repair. A cracked elbow at the dump station is a different part from the bayonet fitting on the RV waste outlet.
2. Check bayonet hooks and lugs. Inspect the existing hose ends and any extension fitting; do not assume all sewer-hose ends have the same attachment style.
3. Identify the station inlet. Check the opening and available thread or slip-fit arrangement before selecting the elbow.
4. Inspect seals and clearance. Replace worn seals and avoid sharp hose bends or unsupported tension on the fittings.
5. Test the connected system. Follow the RV and campground directions, use gloves and the approved disposal point, and check for leaks before draining a full tank.

Other Valterra sanitation parts

If the issue is inside the valve rather than at the hose connection, see our Valterra waste-valve connection guide and Bladex replacement body reference. To remove tank residue before connecting a drain hose, compare our holding-tank rinsing wands.