What is a deck-mounted thermostatic bath shower mixer?

What is a deck-mounted thermostatic bath shower mixer?

A deck-mounted thermostatic bath shower mixer is a type of plumbing fixture designed for bathtubs that combine both the functionality of a bath mixer tap and a shower mixer. 

Deck-mounted thermostatic bath shower mixers typically have a switch or diverter that allows users to easily switch between filling the bathtub and using the shower. This dual functionality makes them a popular choice for bathrooms where both a bathtub and a shower are desired but space or design constraints limit the installation of separate fixtures.

What are advantages of Deck-Mounted Bath Shower Mixer?

Deck-mounted fixtures, exemplified by thermostatic bath shower mixers, offer simplicity in installation, providing a cost-effective and flexible solution for bathrooms. Their adaptable placement on the bathtub’s deck, along with a diverse range of styles, enhances aesthetic appeal. The dual functionality as both a bathtub filler and shower mixer makes them a practical, user-friendly choice. Here’s a brief overview of the advantages:

  • Ease of Installation: Deck-mounted bath mixer are generally easier to install compared to their wall-mounted counterparts. They don’t require modifications to the wall structure and can be conveniently placed on the deck or ledge of the bathtub. This can save on installation time and costs.
  • Dual Functionality: Deck-mounted thermostatic bath shower mixers offer dual functionality, serving both as a bathtub filler and a shower mixer. This eliminates the need for separate fixtures, saving space and creating a streamlined look in the bathroom.
  • User-Friendly Operation: The controls of deck-mounted mixers are easily accessible, providing a user-friendly experience. The integration of thermostatic valves ensures that users can set a comfortable water temperature and enjoy a consistent flow without the risk of sudden temperature changes.
  • Compatibility with Various Bathtub Types: Deck-mounted fixtures are versatile and compatible with various bathtub types, including freestanding, alcove, and drop-in tubs. This versatility makes them a practical choice for different bathroom layouts.
  • Easy Maintenance: Deck-mounted fixtures are often easier to access for maintenance purposes. If repairs or adjustments are needed, the accessibility of these fixtures simplifies the process for homeowners or professionals.

How Thermostatic Valves Work?

Schematic diagram of the principle of thermostatic bathroom faucet

At its core, a thermostatic valve includes a temperature-sensitive element that reacts to changes in the incoming hot and cold water. This element, often a wax or a piston, expands or contracts based on the water temperature. As the user sets the desired temperature, the valve automatically adjusts the proportions of hot and cold water to maintain a steady output.

The key advantage of thermostatic valves is their ability to prevent sudden fluctuations in water temperature. If, for example, there is a drop in the cold water supply, the thermostatic valve reacts quickly by reducing the hot water flow to maintain the preset temperature. This feature is particularly important for safety, as it prevents the risk of scalding.

How to install a deck-mounted thermostatic bath shower mixer

Installing a deck-mounted bath shower mixer is a straightforward process that, with careful attention to detail, can be accomplished by homeowners with basic plumbing skills. Here’s a step-by-step guide to guide you through the installation:

  1. Position the Mixer:
    Place the deck-mounted mixer in the desired position on the bathtub deck, aligning it symmetrically for a pleasing aesthetic.
  2. Mark the Mounting Holes:
    Use a pencil to mark the mounting holes of the mixer on the deck. Ensure these marks align with the holes on the mixer.
  3. Drill Holes:
    Drill pilot holes at the marked positions using an appropriate drill bit. Be cautious not to damage any plumbing or electrical lines beneath the deck.
  4. Mount the Mixer:
    Securely fasten the deck-mounted mixer to the bathtub by inserting the mounting bolts through the drilled holes. Use a wrench to tighten the nuts underneath the deck.
  5. Connect the Water Supply:
    Connect the hot and cold water supply lines to the corresponding inlets on the mixer. Use Teflon tape to secure the connections and prevent leaks.
  6. Install the Shower Hose:
    If your deck-mounted mixer includes a handheld shower attachment, connect the shower hose to the designated outlet on the mixer.
  7. Apply Plumber’s Putty:
    Apply the plumber’s putty around the base of the mixer to create a watertight seal. This is especially important for preventing water from seeping beneath the deck.
  8. Test for Leaks:
    Turn on the water supply and test the mixer for leaks. Check all connections, including those at the water supply and the shower hose.
  9. Secure and Finish:
    Once satisfied with the installation, tighten all nuts and bolts securely. Clean any excess putty and ensure a clean finish.


As we journey through the intricacies of deck-mounted fixtures and explore the fascinating world of thermostatic valves. Picture this: the seamless fusion of elegance, functionality, and innovation, embodied in our very own deck-mounted thermostatic bath shower mixer.

Morado Shower not only offers chic designs but also prioritizes functionality. What makes Morado Shower special? Our mixers are crafted to save over 40% on water consumption, making them an eco-friendly choice. Worried about making the right choice? Don’t stress – enjoy a hassle-free 30-day returns policy, giving you the freedom to change your mind.

Need it fast? No worries! Benefit from our speedy 3-day local UK delivery – your dream shower mixer will be at your door in a flash. And guess what? Contact Morado today and upgrade your shower experience with Morado Shower – where style meets savings!

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