UK trade guideShower Spares 4 min readUpdated 11 July 2026

How to Replace the Shroud Kit on a Bristan Bliss 3 electric (UK)

UK guide to swapping the shroud kit in a Bristan Bliss 3 electric shower valve. TMV2 compliance, part numbers, tools.

Bristan

The part

Replace the concealing plate and shroud on the Bristan Bliss 3 electric where limescale has locked the temperature handle.

Isolate

Undo the two handle grub screws (2.5 mm hex on most Bristan models). Lift the shroud off — do not lever, it cracks.

Swap the shroud kit

Fit new O-rings between the wall plate and shroud to keep the IP54 rating.

Commission

Balance hot and cold to within 0.5 bar. Run the Bristan Bliss 3 electric at max flow for 3 minutes.

Verify max outlet temperature stays below 46 °C per BS EN 1111 by shutting off cold and reading the outlet.

Frequently asked questions

Chrome or brushed?
The Bristan Bliss 3 electric kit ships in polished chrome as standard. Brushed finishes carry a -BR suffix.
Wall plate offset?
10–35 mm adjustment on Bristan concealed valves — use the shroud packer to hide any tile mismatch.
OEM or aftermarket for Bristan?
For TMV2/TMV3 compliance always fit genuine Bristan cartridges. Aftermarket voids the Bliss 3 electric approval.
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