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. 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
| 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 is designed for the matching Caleffi FlowShield backflow preventer in its series. Confirm the model 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
