The Caleffi NA10485 is a union tailpiece with a 3/4 in PEX crimp connection with integrated check valve for Caleffi small union valves 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.
Key Features
Service Without Cutting Pipe
The union joint lets the host valve or separator drop out of the line for service or replacement - no torch, no pipe cutter.
Integrated Check Valve
A built-in check valve in the tailpiece prevents reverse flow through the connection.
Factory-Machined Sealing Face
Genuine Caleffi machining ensures the union face seals reliably against the matching nut and washer.
Technical Data
| Function | Tailpiece |
|---|---|
| For product line | Small Union Valves |
| Description | PEX Crimp/Check Valve Assembly 3/4 in |
| Connection type | PEX Crimp |
| Connection size | 3/4 in |
| Check valve | Integrated |
Related Products
Frequently Asked Questions
It is the genuine fitting for Caleffi Small Union Valves products. Match your host model number and connection size before ordering.
It creates a break point in the piping so the valve or separator can be removed for service without cutting pipe or unsoldering joints.
It blocks reverse flow through the connection, protecting the host valve and simplifying the piping layout.
- Type:
- Tailpiece
- For Product Line:
- Small Union Valves
- Connection Type:
- PEX Crimp
- Connection Size:
- 3/4 in
- Check Valve:
- Integrated