The Caleffi NA10408 is a union tailpiece with a 1-1/2 in press connection for Caleffi hydraulic separators 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.
Factory-Machined Sealing Face
Genuine Caleffi machining ensures the union face seals reliably against the matching nut and washer.
Presscon Leak-Detection O-Ring
Special EPDM O-ring slots weep during an unpressed system test, then seal completely when pressed - unpressed joints reveal themselves before insulation goes on.
Standard Press Tools, 200 psi
Presses with standard compression jaws; rated 200 psi, 0 - 250 F, up to 50% glycol.
Technical Data
| Function | Tailpiece |
|---|---|
| For product line | Hydraulic Separators |
| Description | 1-1/2 in Press Tailpiece Assembly |
| Connection type | Press |
| Connection size | 1-1/2 in |
| Press system | Caleffi Presscon, standard press compression tools |
| Press rating | 200 psi; 0 - 250 F; up to 50% glycol |
| Insertion depth | 7/8 in (mark tube before pressing) |
| Lead-law compliance | Meets U.S. and Canadian low-lead requirements |
Documentation
Sell sheetRelated Products
Frequently Asked Questions
It is the genuine fitting for Caleffi Hydraulic Separators 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.
Standard press compression tools and jaws - see the Presscon installation guide; insert the tube fully to the 7/8 in depth and mark before pressing.
The EPDM O-ring has special slots that let fluid weep past an unpressed joint during system testing, so a missed press shows up immediately; once pressed, the joint seals completely.
- Type:
- Tailpiece
- For Product Line:
- Hydraulic Separators
- Connection Type:
- Press
- Connection Size:
- 1-1/2 in