The Caleffi 41371A is a union fitting with a 1-1/2 in NPT connection, in dzr low-lead brass for Caleffi 5231 series equipment, 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.
Fits 5231 Series
Matched to Caleffi 5231 equipment - confirm your model number before ordering.
Low-Lead DZR Brass
Dezincification-resistant low-lead brass, suitable for potable water connections.
Technical Data
| Function | Fitting |
|---|---|
| For product line | Small Union Valves |
| Fits | Caleffi 5231 series |
| Description | 1-1/2 in MNPT for 5231 Series |
| Connection type | NPT Threaded |
| Connection size | 1-1/2 in |
| Material | DZR Low-Lead Brass |
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Frequently Asked Questions
It is the genuine fitting for Caleffi 5231 series equipment. 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.
Yes - DZR low-lead brass suitable for potable water systems.
- Type:
- Fitting
- For Product Line:
- Small Union Valves
- Connection Type:
- NPT Threaded
- Connection Size:
- 1-1/2 in
- Material:
- DZR Low-Lead Brass