Bathtub Parts and Accessories Products
The bathtub parts and accessories below are grouped by where they install, from rough-in through finish trim.
Rough-In Valve Kits and Tub Boxes
Rough-In Valve Kits contain the in-wall valve body that regulates hot and cold supply to the spout and shower outlets. Trim, handles, and cartridges must come from the same valve platform. Tub boxes set in a concrete slab before the pour, leaving an open recess for the drain and trap.
Bath Drain & Waste Kits
Bath Drain & Waste Kits include the drain shoe, overflow elbow, tee, and tailpiece that connect a tub to a 1-1/2 inch trap. Kits come in PVC, ABS, and brass. A complete kit replaces cracked or corroded waste piping as one assembly, which suits full bathtub replacement parts jobs.
Trip Lever, Lift & Turn, and Toe Touch Drains
Trip lever drains use a lever on the overflow plate to raise or lower a plunger or pop-up stopper through internal linkage. Lift & Turn Drains thread into the drain crossbar and lock closed with a quarter turn of the knob. Toe touch drains open and close with foot pressure on a spring-loaded cartridge.
Bath Drain Face Plates, Dome Strainers, and Escutcheon Screws
Face plates cover the overflow opening and either house a trip lever or serve as a plain cover. Dome strainers fit the drain opening on plunger-style systems, catching hair while allowing flow. Escutcheon screws secure the face plate to the overflow elbow. Thread size and length must match the elbow, or the plate will not seal against the tub wall.
Tub Spouts & Parts
Tub Spouts & Parts include slip-on spouts that secure to a copper stub-out with a set screw and threaded spouts that connect to a 1/2 inch or 3/4 inch threaded nipple. Diverter spouts route water to the shower head when the diverter is lifted. Set screws and adapters support spout repairs.
Tub Protectors
Tub Protectors are bathtub plumbing accessories that cover the tub surface during framing, tile, and finish work. They shield acrylic, fiberglass, enameled steel, and cast iron tubs from scratches, chips, and debris.
How Bathtub Plumbing Parts Work and Where They Install
How the Drain and Overflow Work Together
Water leaves the tub through the drain shoe at the bottom and the overflow opening near the rim. Both paths meet at a tee below the tub and flow through the tailpiece into the trap. The stopper closes the drain shoe while the overflow stays open to prevent spills. Worn gaskets at the drain shoe and overflow are common repair points for bathtub drain parts.
How Valves, Spouts, and Diverters Connect
The rough-in valve mixes hot and cold water and sends it to the spout port. On a tub and shower setup, a diverter in the spout or valve redirects flow to the shower riser. When a diverter wears out, water runs from the spout and shower head at the same time.
Where These Parts Install
These parts serve new construction, remodels, and service calls in single-family homes, apartments, hotels, and healthcare facilities. Maintenance teams in high-use buildings often keep bathtub repair products on hand to limit downtime per unit.
Key Specifications & Planning Steps
Measurements to Take Before Ordering
Confirm the drain thread. Most tubs use a 1-1/2 inch coarse thread at 11.5 threads per inch, while some older tubs use a 1-3/8 inch fine thread at 16 threads per inch. Measure tub wall thickness at the overflow, the distance between overflow and drain, and the length and type of the spout stub-out.
Connection Types and Materials
Waste piping connects by solvent weld for PVC or ABS, slip joint, or compression. Exposed brass waste and overflow suits freestanding tubs, while plastic kits fit enclosed alcove and drop-in installations.
Code and Finish Notes
Waste fittings are commonly certified to ASME A112.18.2/CSA B125.2, and supply fittings such as valves and spouts to ASME A112.18.1/CSA B125.1. Check local code for access panel requirements at slip joints. Match finishes across the spout, face plate, and stopper on bathroom tub parts.
Choosing the Right Bathtub Parts
When comparing bathtub parts and accessories for sale, start with the tub type. Alcove, drop-in, and freestanding tubs each use a different waste configuration. Next, identify the existing waste system and stopper style. A match allows trim-only bathtub repair parts to replace worn components without opening the wall or ceiling below. For valves and spouts, confirm the valve manufacturer and connection type before ordering. On multifamily and hotel projects, standardizing one drain and spout style across units simplifies stocking bathtub replacement components for future service.
Frequently Asked Questions
Where can I buy bathtub drain and waste kits, tub spouts, and face plates in one order?
This category groups bath drain and waste kits, stopper drains, face plates, dome strainers, escutcheon screws, tub spouts, rough-in valve kits, tub boxes, and tub protectors, so a complete set of bathtub parts and accessories for one tub can be ordered together.
What bathtub replacement parts should I stock for routine tub repair calls?
A practical service stock includes lift and turn and toe touch stopper trim, trip lever face plates, escutcheon screws, dome strainers, and slip-on and threaded diverter spouts. Carry stopper trim in both 1-1/2 inch coarse thread (11.5 TPI) and 1-3/8 inch fine thread (16 TPI) to cover older tubs.
What is the difference between a trip lever, lift and turn, and toe touch bathtub drain?
A trip lever drain opens and closes through internal linkage controlled by a lever on the overflow plate. A lift and turn drain locks with a quarter turn of a knob on the stopper. A toe touch drain opens and closes with foot pressure on a spring cartridge.
Should I replace the whole bath waste and overflow or just the drain trim when a tub drain stops sealing?
Replace only the trim (stopper, face plate, or strainer) when the waste piping is intact and dry. Replace the full drain and waste kit when the piping is cracked, corroded, leaking at joints, or does not fit the new tub.
Slip-on or threaded tub spout: how do I tell which one I need?
Check the underside of the old spout. A set screw means slip-on, which fits a smooth copper stub-out. No set screw means threaded, which screws onto a 1/2 inch or 3/4 inch threaded nipple. Measure the stub-out length from the finished wall before ordering.
My tub drain stopper will not hold water. Which part do I need to replace?
Check the stopper seal first. On lift-and-turn and toe-touch drains, a worn O-ring or cartridge often causes the leak, and replacing the stopper restores the seal. On trip lever drains, adjust or replace the linkage so the plunger or stopper seats fully.
How do I protect a new bathtub from damage during a bathroom remodel?
Install a tub protector as soon as the tub is set. It covers the surface through framing, tile, and finish work and stays in place until final cleanup.
Water is leaking behind the overflow plate on a bathtub. What should I check and replace?
Remove the face plate and inspect the overflow gasket and escutcheon screws. A flattened or cracked gasket, or loose screws, lets water bypass the overflow. Replace the gasket and tighten or replace the screws so the plate seals against the tub wall.
The escutcheon screws on a tub overflow plate are stripped or corroded. What replacement screws fit?
Use screws that match the thread and length of the overflow elbow. Brass or stainless steel screws resist corrosion in wet locations. If the elbow threads are damaged, replace the overflow elbow or the full waste kit.
A tub spout diverter will not send water to the shower head. Do I replace the spout or the valve?
If the diverter is built into the spout, replace the spout. If the diverter is a separate handle or part of the valve, service the diverter or cartridge following the valve manufacturer's instructions.
What are the parts of a bathtub drain called and what does each one do?
The main bathtub drain parts are the drain shoe (the drain body in the tub floor), the stopper, the overflow face plate, the overflow elbow, the tee that joins both paths, the tailpiece, and the trap. Together they hold water when closed and channel it to the drain line when open.
What parts do I need to rough in a bathtub during new construction?
A typical rough-in uses a rough-in valve kit, a bath drain and waste kit, and, on slab floors, a tub box set before the pour. Add a tub protector once the tub is set.
What is a tub box and when is it required in a bathtub installation?
A tub box is a form set in a concrete slab before the pour. It leaves an open recess below the tub drain so the waste and trap can be installed and reached later. It is needed when the tub sits on a slab-on-grade floor.
How do I measure an old bathtub drain and overflow so the replacement parts fit?
Record the drain thread size, the tub wall thickness at the overflow, the distance between the overflow and drain centers, and the waste outlet size, typically 1-1/2 inch. These measurements confirm fit for bathroom tub parts such as trim kits and waste assemblies.
Which bathtub plumbing parts hold up to heavy daily use in apartments and hotels?
Metal stopper trim, brass or solvent-welded plastic waste piping, and metal-body spouts handle frequent use. Standardizing one drain and spout style across units keeps bathtub repair products interchangeable between rooms.
