dan_firkus In reply to Do these work with steam by Sheila December 28, 2021 Sheila, The Caleffi Hygrocal 5080 is approved for use with hydronic heating systems and low pressure steam systems. They have a maximum working temperature of 212 F. Reply
Sheila, The Caleffi Hygrocal 5080 is approved for use with hydronic heating systems and low pressure steam systems. They have a maximum working temperature of 212 F.