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Brass and galvanised steel dielectric union with solder and threaded ends

Watts

Watts 1 LF 3001A-1" Dielectric Union Brass Steel

SKU CH-SSGZ-NWNM6

A dielectric union joins 1-inch NPT brass to 1-inch solder steel while blocking galvanic corrosion, rated to 250 psi and 33 to 180 °F

  • Product typeDrain Components
  • Main materialBrass, Malleable Iron
  • Prevents galvanic corrosion with dielectric brass and steel construction
  • Handles 250 psi operating pressure for demanding plumbing systems
  • Operates reliably from 33 to 180 degrees Fahrenheit
  • Buna-N gasket ensures leak-free sealing at connections
  • Polysulfone insulator provides durable electrical isolation between metals

Dielectric Union Brass Steel

The Watts 1 LF 3001A-1" dielectric union connects brass and steel piping while preventing galvanic corrosion. It features a polysulfone insulator and Buna-N gasket for reliable sealing. The fitting handles a maximum operating pressure of 250 psi and temperatures from 33 to 180 degrees F. Overall length measures 2 1/2 in with female NPT and female solder ends.

Installers Preventing Corrosion

This union suits plumbers joining dissimilar metals in potable water or hydronic systems where dielectric isolation is required. The zinc-plated galvanized steel nut and brass body provide durability in standard residential and commercial installations. It is not for applications exceeding the rated pressure or temperature range. Buyers needing larger diameters or different end connections should look at other fittings.

Pressure and Temperature Headroom

The 250 psi rating covers most municipal water supplies and typical hydronic loops with comfortable margin. The 33 to 180 degree F range accommodates cold water lines and standard hot water distribution. Systems operating above 180 degrees F or requiring pressures beyond 250 psi will exceed this union's limits. The polysulfone insulator maintains separation across the full operating envelope.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $35.99
Typical for this category: the median of 4,240 items is $31.99.

Specifications

Product
Brand nameWatts
Model name1 LF 3001A-1 in
Product typeDrain Components
Size & build
Main materialBrass, Malleable Iron

Questions about this item

What pipe thread size and solder connection does the 1 LF 3001A-1" dielectric union require?

The union has a 1 in female NPT thread on one side and a 1 in female solder connection on the other, so you need matching 1 in NPT pipe and 1 in copper tubing ready for soldering.

Will the zinc-plated galvanized steel nut and polysulfone insulator hold up against the malleable iron piping I already have?

Yes, the zinc-plated galvanized steel nut and polysulfone insulator are designed to isolate dissimilar metals, preventing galvanic corrosion when joined to malleable iron or steel pipe.

How can I confirm the union is sealing correctly after I solder and thread it in?

Pressurise the line up to the 250 psi maximum operating pressure and check for leaks at the Buna-N gasket and solder joint; the union is rated for 33 to 180 degrees F, so test within that temperature range.

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