Tub Spout — Diverter Types and Easy Replacement Steps

A tub spout is the wall-mounted fitting that delivers water from the supply valve into a bathtub.

Tub Spout diagram — labeled parts, dimensions, and installation context

What It Is

The tub spout connects to the hot-and-cold supply valve (the faucet body) and directs the water flow downward into the tub. In combination tub-shower systems, the spout includes a diverter — a pull-up knob or lever on the spout body — that redirects water flow up to the showerhead when activated. Releasing the diverter returns flow to the tub.

The spout itself does not control water temperature or flow rate; those functions are handled by the valve body inside the wall. The spout is purely a delivery outlet and diverter.

Types

Tub spouts fall into two installation categories. Slip-fit (CC) spouts slide over a copper pipe stub and are secured with a setscrew underneath the spout. Thread-on (IPS) spouts screw directly onto a threaded nipple. These two types are not interchangeable — the connection type of the stub-out inside the wall determines which spout is needed. Diverter spouts add the pull-up knob; non-diverter spouts are used when a shower is not present or the diverter is built into the valve.

Where It Is Used

Tub spouts are installed on the tub deck wall, typically 4 inches above the tub rim, centered over the drain end of the tub. They are present in every bathtub-faucet installation and in all tub-shower combinations.

How to Identify One

The tub spout is the horizontal pipe fitting projecting from the wall above the tub. A pull-up knob on the top of the spout body indicates a diverter style. The spout may be chrome, brushed nickel, oil-rubbed bronze, or other finish to match the faucet handles.

Replacement

Replace a tub spout when the diverter fails to redirect water (most common failure), when the spout drips after the valve is closed, when the finish is worn or damaged, or during a faucet upgrade. Identify whether the existing stub-out is a pipe or threaded nipple before purchasing a replacement. Most spout swaps take under 30 minutes: unscrew or release the setscrew, pull the old spout off, and slide or thread on the new one.

Tub Spout — FAQ

Why does water still come out of the tub spout when I pull the diverter up?

The diverter inside the spout wears out over time and no longer seals fully. Some water bleeds through even with the diverter pulled up. Replacing the tub spout with a new diverter spout is the fix — the diverter is integrated into the spout body and is not separately serviceable in most models.

How do I know if my tub spout is slip-fit or threaded?

Look for a small access slot on the underside of the spout near the wall. If there is a setscrew visible in that slot, the spout is slip-fit and slides over a pipe. If there is no slot, the spout threads onto a nipple. You can also remove the spout and inspect the stub-out directly.

How do I remove a tub spout?

For slip-fit spouts, loosen the setscrew with a hex key and pull the spout straight off the pipe. For threaded spouts, insert a sturdy dowel or handle into the spout opening and turn counterclockwise. If the spout does not budge, wrap a cloth around it and use pliers to turn it — but protect the finish.

Can I replace a tub spout without turning off the water?

Yes. The spout itself has no valve, so the water supply does not need to be shut off just to swap the spout. The valve inside the wall must be in the closed position before removing the spout, however, so no water runs while the spout is disconnected.

My tub spout drips even when the faucet is off. What causes that?

Dripping from the spout after the handles are closed is almost always caused by a worn cartridge or valve seat inside the faucet valve body — not the spout itself. Replacing the valve cartridge or seats typically stops the drip. The spout is just the delivery point; the leak source is upstream.