Valterra EZ Coupler Sewer Fittings: F02-3303, 3305VP & 3112CL

Valterra EZ Coupler Sewer Fittings: Which Connection Do You Need?

A complete sewer fitting set, a replacement dump-station elbow and a clear bayonet adapter are different purchases. Compare these three Valterra part numbers to identify what's included and the connections each is intended to make.

Understand both ends of the sewer hose

At the RV waste valve

A correctly sized bayonet fitting locks onto the RV's waste outlet. Check the bayonet lugs, seal and orientation of the original part.

Along the hose

Hose couplers join compatible sewer hose sections. The Valterra EZ Coupler system uses matching twist-on threaded fittings rather than separate hose clamps for those connections.

At the dump-station inlet

Elbows and threaded or press-fit adapters accommodate different dump-inlet configurations. Inspect the campsite inlet before assuming one fitting suits every outlet.

Selection tip: Match the hose-end connection as well as the dump-station end. A clear bayonet elbow and a red twist-on EZ Coupler elbow are not automatically interchangeable just because both turn through 90 degrees.

Compare three Valterra part numbers

The F02-3303 provides several separate hose and valve connection pieces. F02-3305VP supplies a red 90-degree elbow with a threaded sewer attachment, whereas F02-3112CL is a clear quick-twist bayonet fitting with multi-size dump-inlet threads.

MPN Included components Connection design Colour
F02-3112CL One clear 90° fitting Bayonet-type hose connection; multi-size threaded dump inlet Clear
F02-3303 Valve/hose adapter, hose coupler and 90° sewer adapter EZ Coupler twist-on hose fittings Red
F02-3305VP 90° elbow with separate sewer thread attachment EZ Coupler hose interface and threaded dump-end attachment Red

The differences that matter

F02-3303 — EZ Coupler system: A red fitting set containing the valve/hose adapter, a hose-to-hose coupler and a 90-degree sewer adapter. It is a convenient choice when building compatible EZ Coupler connections. The sewer hose itself is not included in the listed three-piece fitting set.

F02-3305VP — elbow with thread attachment: A red 90-degree EZ Coupler sewer adapter packaged with a threaded attachment for the sewer inlet. This is not the complete three-piece system; confirm the hose-end fitting is compatible.

F02-3112CL — clear bayonet elbow: Valterra identifies this as a quick-twist, 90-degree clear bayonet fitting with threaded sizes for 3-inch, 3½-inch and 4-inch dump-station connections. Confirm your hose's bayonet end before choosing it.

Valterra sewer fitting products

Check the connection before draining

With the waste valves closed, verify the bayonet connection seats fully, the hose is supported and the dump-station adapter is secure. Inspect the gaskets and hose ends for damage. Never force a threaded fitting onto an inlet with the wrong thread profile; an adapter must seal securely before the tank valves are opened.

For the full system rather than individual fittings, see our RV black- and gray-water drainage reference. Our Valterra waste-valve connection guide helps identify the valve-side fittings, and the Camco RhinoFLEX fitting guide covers a different hose accessory family.

Frequently asked questions

Does the F02-3303 include the sewer hose?

No. The listed system consists of connection fittings: valve/hose adapter, coupler and 90-degree sewer adapter. Choose a suitable sewer hose separately.

Can I use a clear F02-3112CL in place of a red F02-3305VP?

Only if the hose-end connection and dump-station interface are the correct types. The two parts have different connection designs, and no universal interchangeability is established.

Do all campground drains have the same threads?

No. Dump-station inlets can differ. Confirm the inlet size and whether the selected adapter will seal properly.

Is the hose-to-hose coupler the same as the waste-valve adapter?

No. A coupler joins hose sections, while a valve adapter attaches a compatible hose assembly to the RV's waste outlet. F02-3303 provides both styles in its three-piece system.

Quick product links: F02-3112CL · F02-3303 · F02-3305VP

Save on Parts & Accessories

Sign up for special offers, new product updates, and deals on RV, truck camper, towing, truck, and marine parts and accessories.

About NewRVParts

NewRVParts is an online-only source for brand-new RV parts and accessories, truck camper equipment, towing and trailer parts, truck accessories, and marine products. We serve customers throughout Canada and the United States, with products from trusted manufacturers shipped through a large North American distribution network. Shop online for replacement parts, equipment, and accessories delivered directly to your door.

Shop RV Parts