Caleffi · 2026 catalog
553542A
½" NPT male union in, ½" FNPT out
Published catalog evidence
Exact manufacturer record
- Code
- 553542A
- Description
- ½" NPT male union in, ½" FNPT out
- Catalog weight
- 1.7 lb
- Published row
- 553542A ½" NPT male union in, ½" FNPT out 1.7 -
Verification boundary
What still needs to match
Function and seriesConfirm valve, separator, manifold, fill, control, backflow, or accessory function and exact series.
ConnectionsVerify NPT, sweat, press, PEX, flange or union connection type and size.
Hydronic dutyCheck pressure, temperature, flow/Cv, materials, seals, potable/hydronic approvals, and control compatibility.
InstallationConfirm orientation, envelope, service access, and current Caleffi documentation.
Related catalog codes