Belimo F680HD Valve Assembly L99H008 beaded neoprene diaphragm for extended

beaded neoprene diaphragm for extended service life and simplified rebuilds

making it an ideal primary limit control for hot water boilers or a secondary cutoff for low-pressure steam units

Common Questions & Technical Insights What is the resistance value at freezing

while the 3-8" w

facilitating a safe and efficient ignition cycle

Belimo F680HD Valve Assembly L99H008 beaded neoprene diaphragm for extendedThe Belimo F680HD Valve Assembly is a high performance 3 inch 2 way butterfly valve engineered for demanding commercial HVACR applications. Built with a robust ductile iron body and a 304 stainless steel disc, this assembly ensures long term reliability in chilled water, hot water, and up to 60% glycol solutions. With a high flow capacity of Cv 302 and a Close Off Pressure (COP) of 200 psi, it provides precise 0% leakage (bubble tight) performance.