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How To Fit and Replace A Mixer Shower Tap

Fitting a shower mixer is made easy with our step-by-step guide

Blog
Monday 27th December 2021

A shower mixer is a valve that takes from both your hot and cold-water supplies and mixes them to create your ideal temperature. There are several different types of shower mixer.

  • Single lever - a single lever that can be moved up and down to control water flow, and from side to side to control the temperature. 
  • Sequential - a single rotary control that you turn to increase the temperature. The Mira Minilite EV is an example of a sequential shower mixer. 
  • Concentric - two rotary-style controls that sit on top of each other. The outer control turns the shower on and adjusts water flow, while the inner control sets the temperature. The Mira Adept BIR features a concentric shower mixer. 
  • Dual control - two controls that sit above and below one another or side by side. One controls water flow and the other adjusts the temperature. The Mira Adept BRD features dual controls. 
  • Bar - two controls that both sit on one bar. One control is for water flow and the other manages the temperature. The Mira Atom EV features a bar shower mixer. 

In this article we’ll focus on how to install the Mira Minilite EV mixer shower, which is a sequential shower mixer. For how to install other types of shower mixer, explore our Installation and User Guides.  

What you’ll need 

  • Mira Minilite EV mixer shower kit 
  • Spanner  
  • Spirit level 
  • Pencil 
  • Pipe slice 
  • Drill with masonry bit 
  • Silicone sealant 

Step 1

Turn the water supply to your bathroom off.

Step 2

If you are replacing an existing shower mixer, then remove the old one by loosening and unscrewing the nuts that are securing it in place. Once fully undone, the shower mixer should come away easily. Give the area a good clean before you move on to step 3: installing your new shower mixer. 

Step 3

Decide where you want to position the mixer valve, the route for the supply pipework and where the outlet will be. Ideally, the hot supply will be on the left and the cold on the right. In the event of the inlet supplies being reversed, the unit can be adjusted over to accommodate this. For rear inlet, use an elbow fitting. A falling supply can be preferable to prevent air locks. 

Step 4

Now use the template supplied to establish the pipe centres (110mm). The edges of the template can be folded toward you to provide a rest for a spirit level. For a falling supply, this will take place on the ceiling. 

Step 5

After finishing the wall surface and using a standard pipe slice, cut the recessed pipe length so it protrudes through the finished surface by 21–26mm. Remove any burrs from the pipes. Don’t use a hacksaw as this may damage seals in the valve. 

Step 6

Using the same template as for the pipe centres, mark the three fixing holes for the back plate. Remove the backplate from the shower unit and fix it to the wall using a drill with a masonry bit. Three x no. 8 x 1¼” screws and wall plugs are supplied. Seal the concealing plates with silicon and press them to the wall. 

It is essential at this point that the supply pipework is thoroughly flushed through before connection to the mixer. Failure to do so may result in product malfunction and will not be covered under the guarantee. 

Step 7

Prepare the unit by loosening the hex screws to adjust each elbow depending on the supply pipe route. Make sure the flow regulator is in place. The unit comes with two: 12 and 6 litres per minute (lpm). The regulator can be removed if the maintained (running) water pressure is less than 0.5 bar or the shower force is too low. 

Step 8

Fit the compression nuts and olives onto the supply pipework, and then connect the unit by pushing the push the valve firmly back onto the back plate. Tighten the compression nuts finger tight. Use the hex screw underneath the valve to secure it to the wall. Then tighten the nuts with a spanner, taking great care not to damage the chrome finish. 

Step 9 

For new installations where the shower fittings kit is being fitted for the first time (and not over a previous item), mark the fixing centres at 630mm. Drill and screw the mounting brackets into the wall. Assemble the fittings and slot them into the brackets. Fix the side bar at both ends with the hex screw supplied. Attach the hose making sure the rubber washers are in place at both ends.

Watch the video 

For further support with your shower mixer installation, follow the step-by-step instructions in our dedicated film. 

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Browse our spare shower parts and accessories for everything from replacement mixer valves to diverters and backplates.