The genuine article
My Wirsbo UF heating system is now 12 years old, and some of the Wirsbo Actuators are giving trouble due to a combination of inappropriate use of plastics and method of fixing by the use of a click device.
Wirsbo were subsequntly taken over by Uponor and they redesigned the actuators so that the click device was replaced with a simple hand tightened nut. This works well, but one grumble is that it is difficult/impossible to ascertain whether the valve is open or closed.- a problem that Wirsbo actuators did not suffer from.
So my grumble means 4 stars instead of 5 stars!
A point to watch out for when buying - Uponor make two versions 24 volt and 240 volts - make sure you get the right one!
Verified purchase: YesCondition: New