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The CALEFFI NA553362 Boiler Trim Kit offers 10 configurations, integrating 8 essential boiler installation components into a single package. This kit includes a 551006A Air Separator with a 1" NPT connection, a 573002A AutoFill/Backflow preventer combination with a 1/2" NPT connection, and a 561402A Check Valve. It also features a 4.4 Gallon expansion tank, two 3" brass nipples, and a tee, streamlining boiler system setup.
Streamlines boiler system installation with integrated components including air separator, autofill, backflow preventer, and 4.4 gallon expansion tank.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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