The Caleffi NA10370 is a replacement component for Caleffi 3047 series bodies, 1 inch and 1-1/4 inch. It is supplied as a service part and is not a complete assembly.
Best for service replacement where the parent assembly is sound and only the component needs renewing.
Specifications sourced from Caleffi North America technical literature. Last reviewed July 2026.
Key Features
Service Part, Not a Complete Assembly
Supplied as a replacement component for Caleffi 3047 series bodies, 1 inch and 1-1/4 inch. It installs into equipment already in the piping.
Published Flow Coefficient
Rated at 33 Cv, allowing pressure drop to be calculated directly rather than estimated.
Technical Specifications
| Product Type | Replacement Spring Check |
| Compatibility | Caleffi 3047 series bodies, 1 inch and 1-1/4 inch |
| Fits Sizes | 1" and 1-1/4" |
| Series | Accessory |
| Flow Coefficient (Cv) | 33 |
Related Products
- Caleffi NA10117 : Replacement Spring Check 1/2" and 3/4"
- Caleffi NA10371 : Replacement Spring Check 1-1/2" and 2"
Frequently Asked Questions
What is Caleffi NA10370?
Caleffi NA10370 is a replacement component for Caleffi 3047 series bodies, 1 inch and 1-1/4 inch. It is a service part, not a complete assembly, and installs into equipment already in the piping.
What is the warranty on Caleffi NA10370?
Caleffi covers this product under its standard two-year limited warranty against defects in material and workmanship from the date of shipment. ZOT Supply is an authorized Caleffi distributor.
- Product Type:
- Replacement Spring Check
- Series:
- Accessory
- Product Family:
- Check Valves
- Compatibility:
- Caleffi 3047 series bodies, 1 inch and 1-1/4 inch
- Flow Coefficient:
- 33 Cv