The Caleffi NA11604 is FlowShield Complete Repair kit for 1/2 in 574, a genuine FlowShield service part for Caleffi backflow preventers.
Product data compiled from Caleffi North America technical documentation; warranty per Caleffi North America Limited Warranty. Last reviewed July 2026.
FunctionService Part
Connection1/2 in
Warranty2 Years
Key Features
Genuine FlowShield Part
Factory service component: FlowShield Complete Repair kit for 1/2 in 574.
Direct Fit
Designed to fit and rebuild the matching Caleffi FlowShield backflow preventer.
Technical Data
| Fits | Fits the 1/2 in FlowShield RP models (574004A / 574064A) |
|---|---|
| Function | Backflow preventer service part |
| Connection | 1/2 in |
Documentation
Technical brochureRelated Products
Caleffi 594713/4 Backflow PartCaleffi 594723/4 Backflow PartCaleffi NA116053/4 Backflow PartCaleffi 304040A1/2 Vacuum Relief Valve
Frequently Asked Questions
What is the Caleffi NA11604?
It is FlowShield Complete Repair kit for 1/2 in 574, a genuine Caleffi FlowShield service / repair part.
Which preventer does it fit?
It fits the 1/2 in FlowShield RP models (574004A / 574064A). Confirm your installed model and size before ordering.
2-Year Limited Warranty. Backed by Caleffi North America's limited warranty against defects in material and workmanship for two years from date of shipment. See Caleffi's limited warranty for full terms.
- Type:
- Accessory
- Series:
- FlowShield
- Connection Size:
- 1/2 in
