Caleffi NA553366 Boiler Trim Kit 1" Press with ASSE 1012 Backflow Preventer and 4.4 Gallon Expansion Tank

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Caleffi NA553366 Boiler Trim Kit 1" Press with ASSE 1012 Backflow Preventer and 4.4 Gallon Expansion Tank

Name: Caleffi NA553366 Boiler Trim Kit 1" Press with ASSE 1012 Backflow Preventer and 4.4 Gallon Expansion Tank
Brand: Caleffi
SKU: CALE-NA553366
Price: 644.99 USD
Availability: InStock

CaleffiSKU: CALE-NA553366

Price:

$644.99

Stock:

Re-stocking soon

Quantity:

Special order — typically ships in 1–3 weeks.
Contact us for an exact lead time.

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Shipping details

Shipping weight: 3.7 lb
Box size: 17.75 × 16.15 × 12.9 in

Connection Type	Press
Size	1"

The Caleffi NA553366 is a 1" press-connection boiler trim kit that combines near-boiler components with an ASSE 1012 backflow preventer and a 4.4 gallon expansion tank. It is designed to speed up the installation of the boiler-side piping in a hydronic heating system.

Trim kits group the fill, backflow and expansion functions a residential hydronic boiler needs into a single matched package, reducing the number of separate fittings and press joints on the job. Refer to the technical data sheet for the full list of components included.

Before ordering, confirm the 1" press connection matches your piping and press tooling, and that a 4.4 gallon expansion tank is adequately sized for your system's water volume.