The Caleffi 59977 is FlowShield UPSTREAM CHECK VALVE FOR 574004A, 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
Warranty2 Years
Key Features
Genuine FlowShield Part
Factory service component: FlowShield UPSTREAM CHECK VALVE FOR 574004A.
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 |
Documentation
Technical brochureRelated Products
Frequently Asked Questions
What is the Caleffi 59977?
It is FlowShield UPSTREAM CHECK VALVE FOR 574004A, 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
