Fitting a new mixer shower All aspects of plumbing questions and answers, help, tips and information

[Rookie1977]

Is it straight forward remove an old mixer shower and fit a new one? Is there anything I need to be aware of or anything special I need to do. I plan to buy the new unit from B&Q and fit it myself.
From Mr "Only Semi-Confident in DIY"

[bobbych]

the new mixer need to be of a type suitable for your hot water system. Many now are universal but not all

ie if u have a combi boiler or system boiler, is your water pressure low or high.

Look at valve spec and it will say what systems it is suitable for. As i say most are for ALL systems

[plumbbob]

Take note of what Bobby says, or you may have a shower that no water comes out of.

Other considerations are pipe sizes, pipe space between hot and cold. Some are 6" others are 150mm. Others are very different. Also, make sure hot and cold feeds are on the same side.

You don't say whether this is a built in shower valve or an exposed one. Built in ones vary enormously.