Caleffi · 2026 catalog
577989A
1½" sweat union
Published catalog evidence
Exact manufacturer record
- Code
- 577989A
- Description
- 1½" sweat union
- Catalog weight
- 8 lb
- Published row
- 577989A 1½" sweat union 8.0 -
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.
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