Which Thermostatic Mixer Valve (TMV) do I need?

What is a Thermostatic Mixer Valve (TMV)?

TMV Chart

Location Utility Required by legislation or authoritative guidance? Recommended by legislation or authoritative guidance? Suggested best practice? Value Type
Private dwelling
Bath
Basin
Shower
Bidet
Yes
 
 
Yes
 
 
 
 
 
Yes
Yes
 
TMV2
Housing Association dwelling
Bath
Basin
Shower
Bidet
Yes
 
 
Yes
 
 
 
 
 
Yes
Yes
 
TMV2
Housing Association dwelling for the elderly
Bath
Basin
Shower
Bidet
Yes
Yes
Yes
Yes
 
 
 
 
 
 
 
 
TMV2
Hotel
Bath
Basin
Shower
 
 
 
 
 
 
Yes
Yes
Yes
TMV2
NHS nursing home
Bath
Basin
Shower
 
 
 
Yes
Yes
Yes
 
 
 
TMV3
Private nursing home
Bath
Basin
Shower
 
 
 
Yes
Yes
Yes
 
 
 
TMV3
Young persons' care home
Bath
Basin
Shower
Yes
Yes
Yes
 
 
 
 
 
 
TMV3
Schools, including nursery
Bath
Basin
Shower
Yes. 43℃ max
 
Yes
 
Yes
 
 
 
 
TMV2
Schools for the severely disabled, including nursery
Bath
Basin
Shower
Yes. 43℃ max
 
Yes
 
Yes
 
 
 
 
TMV3
NHS hospital
Bath
Basin
Shower
Yes
Yes
Yes
 
 
 
 
 
 
TMV3
Private hospital
Bath
Basin
Shower
Yes
Yes
Yes
 
 
 
 
 
 
TMV3