The Caleffi NA10001 is a union nut with a 1/2 in sweat connection, in dzr low-lead brass for Caleffi AutoFill products, providing the union joint that lets the host valve or separator be installed and removed without cutting pipe.
Product data compiled from Caleffi North America technical documentation. Last reviewed July 2026.
FunctionUnion Nut
For LineAutoFill
Connection1/2 in sweat
MaterialDZR Low-Lead Brass
Warranty2 Years
Key Features
Genuine Union Nut
Correct thread form and depth for the matching Caleffi union tailpiece and body.
Low-Lead DZR Brass
Dezincification-resistant low-lead brass, suitable for potable water connections.
Technical Data
| Function | Union Nut |
|---|---|
| For product line | AutoFill |
| Description | 1/2 in Sweat Fitting for 3/4 in Nut |
| Connection type | Sweat |
| Connection size | 1/2 in, 3/4 in |
| Material | DZR Low-Lead Brass |
Related Products
Caleffi F318681/2 in TailpieceCaleffi NA100021/2 in TailpieceCaleffi 31901A3/4 in TailpieceCaleffi NA100033/4 in Tailpiece
Frequently Asked Questions
What does the Caleffi NA10001 fit?
It is the genuine fitting for Caleffi AutoFill products. Match your host model number and connection size before ordering.
Is it lead-free?
Yes - DZR low-lead brass suitable for potable water systems.
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:
- Union Nut
- For Product Line:
- AutoFill
- Connection Type:
- Sweat
- Connection Size:
- 1/2 in
- Connection Size:
- 3/4 in
- Material:
- DZR Low-Lead Brass
