Boiler Trim Kits

Resideo boiler trim kits that group the near-boiler components for a hydronic system in one package. The collection includes TK30 kits with 1" or 1-1/4" SuperVent air vents in NPT, sweat or press, paired with FM911 or NK300S fill valve combos, and TK300-30 kits with an expansion tank, AP400 1" air purger and FM911 fill combo.

Choose a kit by the system pipe size and connection method you plan to use. Check that the expansion tank size suits the system water volume, and that the fill valve pressure setting matches the building height. A kit reduces the number of separate parts to source for a boiler install.

See also: Expansion Tanks (Heating), Air Separators, System Fill Tanks & Autofills.