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Brass dielectric union pipe fitting with threaded ends

Everflow Supplies Inc.

Everflow Supplies Inc. DUFF0114-NL FIP Dielectric Union Pipe Fitting 1-1/4

SKU CH-FC5E-T6SAS

FIP dielectric union pipe fitting prevents galvanic corrosion between dissimilar metals in plumbing systems

  • Prevents galvanic corrosion between dissimilar metals with dielectric union design
  • Meets multiple plumbing approvals for code-compliant installations
  • Solid brass body construction ensures long-term durability
  • Female iron pipe threads simplify connection to existing plumbing
  • Lead exposure warning requires hand washing after handling per California Proposition 65

Dielectric Union Fitting

This dielectric union fitting joins dissimilar metal pipes while preventing galvanic corrosion in plumbing systems. The FIP threaded connection allows direct attachment to female iron pipe threads without additional adapters. It suits residential and commercial water supply installations where copper and steel piping meet.

Solid Body Construction

The solid body provides mechanical strength for permanent installations under typical plumbing pressures. Multiple approvals indicate compliance with relevant plumbing codes for potable water use. The design enables straightforward assembly with standard pipe wrenches during new work or repairs.

Material Compatibility Limits

The fitting addresses corrosion between dissimilar metals but does not eliminate the need for proper dielectric isolation elsewhere in the system. California Proposition 65 warnings note the presence of lead and other listed chemicals requiring hand washing after handling. Buyers needing plastic-to-metal transitions or higher temperature ratings must select alternative fitting types.

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Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $18.99
Typical for this category: the median of 2,955 items is $17.99.

Specifications

Product
Brand nameEVERFLOW

Questions about this item

What thread standard does the 1-1/4" FIP connection on this dielectric union use?

It uses a 1-1/4 inch Female Iron Pipe (FIP) thread, which follows the NPT taper standard for sealing on the threads themselves when joined with a matching male fitting.

What pipe size and material must the mating nipple match for this union to seal?

The mating side requires a 1-1/4 inch male NPT thread on pipe or a nipple of compatible material such as steel, brass, or copper adapter.

Which joint should be tightened first when installing this dielectric union to avoid damaging the insulating gasket?

Tighten the union nut between the two body halves last, after both tailpieces are threaded into the piping, so the gasket seats without twisting.

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