Installing a new bathtub shower faucet is one of the most effective ways to refresh a bathroom, improve water efficiency, and enhance user comfort. Whether you’re upgrading an existing system or fitting a new bath space, understanding each step ensures a secure and leak-free installation.
At Global Emysa, we specialize in manufacturing premium shower systems — from brass and stainless-steel shower mixers to modern concealed thermostatic valves. The following guide outlines the essential process for installing a bathtub shower faucet safely and efficiently.
Before beginning, make sure the water supply is turned off and the work area is clean. Gather the necessary tools and components:
Tools Needed:
Adjustable wrench and pipe wrench
Plumber’s tape (Teflon tape)
Screwdriver set
Level and measuring tape
Silicone sealant
Bucket and towel
Parts Required:
Bathtub faucet body (mixer or diverter)
Spout and handle trim kit
Shower arm and head
Wall escutcheons and connectors
If you are replacing an old faucet:
Shut off the main water supply.
Open the faucet to release remaining water pressure.
Use a wrench to disconnect the old spout and shower arm.
Remove the escutcheon plate to expose the plumbing connections.
Check the water lines for corrosion or debris before proceeding.
Most modern bathtub shower faucets, including those from Global Emysa, use a single-handle pressure-balanced or thermostatic mixing valve to control both temperature and flow.
Position the valve body between the hot and cold supply lines.
Use the level to ensure the valve sits perfectly horizontal.
Secure with support brackets or clips inside the wall cavity.
Wrap the threaded pipe ends with plumber’s tape to prevent leaks.
Tighten all connections firmly, but avoid overtightening brass fittings.
If installing a Concealed Shower System, check that the depth of the valve matches the wall finish thickness so that the trim plate aligns neatly after tiling.
Next, attach the tub outlet pipe and shower riser pipe to the valve.
The tub spout connects to the lower outlet using a straight ½-inch or ¾-inch pipe.
The shower outlet extends upward to the wall fitting for the shower arm.
Seal all joints with Teflon tape and verify that the pipes are clean and free of obstructions.
Once connected, install the tub spout and tighten it gently with a wrench, protecting the finish with a cloth.
Apply Teflon tape to the shower arm threads.
Screw the arm into the wall fitting until snug, with the outlet facing downward.
Attach the shower head and hand-tighten.
Wipe away excess tape or residue for a polished appearance.
If using a dual-function shower system (fixed + handheld), connect the flexible hose to the diverter outlet, ensuring both outlets seal correctly.
Reopen the water supply gradually.
Test both hot and cold lines for leaks.
Turn on the faucet and check the diverter between tub and shower.
Apply a thin layer of silicone sealant around the trim plate and spout base.
Allow the sealant to cure for at least 12 hours before full use.
If water pressure seems uneven, remove the aerator or shower head and flush debris from the lines.
Always confirm water pressure compatibility with your faucet’s rated specifications.
For concealed installations, use brass or stainless-steel fittings for long-term durability.
Avoid mixing dissimilar metals (like brass and galvanized steel) to prevent corrosion.
When installing LED or thermostatic shower systems, follow manufacturer wiring and calibration instructions carefully.
Installing a bathtub shower faucet requires precision and patience, but the result is a more functional and visually appealing bathroom. With the right materials and careful setup, your faucet will deliver years of smooth performance and comfort.
Global Emysa provides a full range of brass, stainless steel, and ABS shower faucet systems, designed for easy installation and long-term durability. Whether you’re outfitting a modern apartment, hotel suite, or residential bathroom, our faucets bring style and engineering excellence together.
Explore more at Global Emysa Shower Faucets — where professional design meets reliable performance for every modern bathroom.
