The 521 MixCal, 5213 and 5231 series from Caleffi are adjustable thermostatic mixing valves used in residential and commercial systems that produce domestic hot water, or in hydronic and radiant heating systems. The low-lead-certified valves maintain the desired output temperature of the mixed water. An optional outlet temperature gauge confirms the mixed temperature for the 521 and 5231 valves.
Mixing valves from Caleffi
July 22, 2016