A John Guest Speedfit thermostat or programmer controls an underfloor 240 V actuator valve, which allows or closes the water flow to a specific underfloor heating (UFH) circuit on the manifold. When connected to a John Guest Aura wiring centre, it also permits independent pipe loop control via the thermostat.

• WRAS approved
• Conforms to BS 7291
• Kitemarked to KM39767
• 240 V circuit actuator valve
• Suitable for underfloor heating applications only
• Needs its own pipe inserts to work optimally
• It is recommended not to use these products for the delivery of any liquid in compressed form such as LPG, fuel oil, etc
• Needs to be protected from vermin infested areas and frost
• Works well with underfloor heating installations in hard or timber floors