The Bristan Prism Thermostatic Recessed kit ships in polished chrome as standard. Brushed finishes carry a -BR suffix.

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 Prism Thermostatic Recessed approval.

How to Replace the Shroud Kit on a Bristan Prism Thermostatic Recessed (UK)

Replace the concealing plate and shroud on the Bristan Prism Thermostatic Recessed where limescale has locked the temperature handle.

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

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

Balance hot and cold to within 0.5 bar. Run the Bristan Prism Thermostatic Recessed 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.

Chrome or brushed?: The Bristan Prism Thermostatic Recessed 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 Prism Thermostatic Recessed approval.

Shop the spares

Browse shower spares — 5,410 live parts.