The Caleffi NA553 Series Boiler Trim Kit combines 8 common boiler installation components into one simple package. The kit matches the necessary components for boiler installations into a simple package and takes all of the guess work out of selecting components, simplifying installation.
The kit includes:
For your convenience, the kits are available with sweat or NPT connections. Our NA553-B Series kit includes all components except a backflow preventer.
Quick Reference Guide:
The kit includes:
- (1) Caleffi DISCAL™ Air Separator (3/4”, 1” or 1-1/4”)
- (1) AutoFill™ Boiler Feed Valve
- (1) Expansion Tank Check Valve
- (2) Brass Nipples
- (1) Brass Tee
- (1) Expansion Tank (2.2, 4.4 or 7.6-gallon)
- (1) Backflow Preventer (optional)
For your convenience, the kits are available with sweat or NPT connections. Our NA553-B Series kit includes all components except a backflow preventer.
Quick Reference Guide:
| Reference | Title | Type |
| Catalog |  | |
| idronics™ | | link |
| Product Information Sheet | 0.34 MB Boiler Trim Kits, Series NA553 | |
| 0.34 MB Kit complet pour Chaudière Série NA553 | ||
| 0.34 MB Boiler Trim Kits, Series NA553-B | ||
| 0.34 MB Kit complet pour Chaudière Série NA553-B | ||
| Product Training | www.caleffi.info/webinars | link |