Caleffi NA553366 Boiler trim Kit 1'' Press 4.4GAL With ASSE 1012 Back Flow

The Caleffi NA553 Boiler Trim Kit is available in 12 configurations and combines 8 boiler installation components into one box. This kit matches the necessary components for boiler installations into a simple package. The NA553 takes all the guesswork out of selecting components for a simple installation.

Includes:

• 1 Caleffi DISCAL® air separator
• 1 Backflow preventer (R=ASSE 1013, otherwise ASSE 1012)
• 1 AutoFill
• 1 Expansion tank check valve
• 2 Brass nipples
• 1 Brass tee