Technical Data: 20-55°C G1 20-3,4 High flow capacity Protection against excess temperatures. Replaces: 31200100, Supersedes: 31150101, This can also be used to swap out / supersede for the ESBE G1 which included Uponor part no. 1002350 & 1002349. Instead of an actuator you would use the manual thermostatic head with the this valve. This valve may vary in the colour and finish.