The Caleffi 59455 is FlowShield Upstream check valve 1-1/2 in RP, 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
Connection1-1/2 in
Warranty2 Years
Key Features
Genuine FlowShield Part
Factory service component: FlowShield Upstream check valve 1-1/2 in RP.
Direct Fit
Designed to fit and rebuild the matching Caleffi FlowShield backflow preventer.
Technical Data
| Fits | Fits the 1 in (574006A / 574066A), 1-1/4 in (574700A / 574706A) and 1-1/2 in (574801A / 574806A) FlowShield RP models |
|---|---|
| Function | Backflow preventer service part |
| Connection | 1-1/2 in |
Documentation
Technical brochureRelated Products
Caleffi 594561-1/2 Backflow PartCaleffi 594571-1/2 Backflow PartCaleffi 594581-1/2 Backflow PartCaleffi 574801A1-1/2 ASSE 1013 RP Backflow Preventer
Frequently Asked Questions
What is the Caleffi 59455?
It is FlowShield Upstream check valve 1-1/2 in RP, a genuine Caleffi FlowShield service / repair part.
Which preventer does it fit?
It fits the 1 in (574006A / 574066A), 1-1/4 in (574700A / 574706A) and 1-1/2 in (574801A / 574806A) FlowShield RP models. 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:
- 1-1/2 in
