allowing fine-tuning of hydronic system balancing at the individual unit level

Circuit Protection: Effectively manages inductive loads to prevent contact welding in the heater control circuit

Use the manual test lever located beneath the cover

making it highly efficient for continuous or intermittent use

This VM3211T33A000 Valve Assembly is suitable for water and glycol solutions (up to 60%) but is not rated for steam use

Patterson-Kelley 86-7100-0230 Flame Rod Crown 320720-756 allowing fine-tuning of hydronic systemThe Patterson Kelley 86 7100 0230 Flame Rod Crown (Model 05 050 S) is a critical flame sensing component engineered for precise ionization detection in high efficiency commercial boilers. Designed for compatibility with the Patterson Kelley Mach series and Modu Fire Forced Draft systems, this flame rod ensures the flame safeguard control receives a consistent microamp signal during the combustion cycle. Constructed with high grade alloys to withstand