August 05, 2015 How do I change the thermostat in a boiler protection valve? Designed to protect non-condensing boilers from flue gas condensation, when installed prop... Read more
July 23, 2015 Can I dilute glycol to less than 25% concentration? Over-dilution of formulated glycol heat transfer fluid (HTF) causes corrosion problems. The reason f... Read more
July 01, 2015 How do I use a hygroscopic air vent? Some models of Caleffi's automatic air vents are equipped with a hygroscopic safety vent ca... Read more
June 15, 2015 Where should an air separator be located? The best place to locate an air separator in a hydronic system is where the water temperature is hig... Read more
June 04, 2015 How many air vents do I need? As Manager of Engineering Training, I do a lot of Lunch 'n Learn sessions in the U.S. and Canada... Read more
May 14, 2015 How do I wire a floating control actuator? The 6440 Series actuator from Caleffi accepts a "floating" (a.k.a. 3-position) c... Read more
May 07, 2015 Do I really need magnetic dirt separation in my hydronic system? The short answer is – yes! Almost all hydronic systems have at least one wetted component m... Read more
April 23, 2015 How to install temperature gauges into a distribution manifold? Caleffi's 668S1 Series TwistFlow™ manifold has a ton of great features. As of t... Read more
April 16, 2015 Do I need a hydraulic separator on a manifold mixing station? Caleffi Manifold Mixing Stations, such as the 171 Series and 172 Series, have a lot of imp... Read more
April 08, 2015 How do PEX fittings work? Although Caleffi does not sell PEX tubing, we do sell universal PEX and PEX-AL-PEX fittings that con... Read more
February 19, 2015 About my expansion tank... We get questions regarding locating and orientation of expansion tanks. Can I mount the tank on its ... Read more
February 13, 2015 Caleffi 626 Series Paddle Flow Switch The Caleffi 626600A paddle flow switch is a durable, high quality water flow switch for pipe sizes f... Read more