Any of the three pictured thermostatic mixing valves can be used to upgrade a douche kit to have mixed hot & cold water.
Concealed Thermostat - This allows the neatest finish with full control of the temperature that comes from your douche
Inline Chrome Thermostat - This fits on your pipework but has a nice safety handle with a great finish
Standard TMV - This would fit on your pipework before the douche kit. The temperature would be set once and then you can enjoy warm water from your douche kit
