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Galvanized steel dielectric nipple, threaded ends, zinc-plated finish, 6-inch length

Zoro Select

Zoro Select 3-1/2" MNPT x 6" TBE Galvanized Steel Dielectric Nipple Sch 40

SKU CH-FSQP-GNB4R

A galvanized steel dielectric nipple with polyethylene liner for Schedule 40 water piping, rated 150 psi at 200 °F

  • ColorTransparent
  • TypePipes, Valves & Fittings
  • Prevents galvanic corrosion with polyethylene liner
  • Handles 150 psi at 200°F operating pressure
  • Withstands temperatures up to 230°F maximum
  • Operates down to 32°F minimum temperature
  • Schedule 40 welded steel construction for durability

Galvanised Steel Dielectric Nipple

The Zoro Select dielectric nipple joins dissimilar metal pipework in water systems while preventing galvanic corrosion. Its polyethylene liner electrically isolates the steel body from the mating fitting. Nominal size is 3-1/2 in with a 6 in overall length. The fitting meets Schedule 40 dimensions.

Thermal and Pressure Performance

Rated for continuous service between 32 and 230 Degrees F at up to 150 psi. The welded steel construction and zinc-plated finish resist deformation across this temperature span. Electric-resistance weld seams maintain integrity during normal pressure cycling. No external power or active cooling is involved.

Liner and Connection Benefits

The polyethylene liner eliminates metal-to-metal contact at the joint, extending system life in potable water applications. Male NPT threads on one end and threaded both ends allow direct assembly into Schedule 40 fittings without adapters. Transparent colour aids visual inspection of thread engagement.

Highlights

  • Prevents galvanic corrosion with polyethylene liner
  • Handles 150 psi at 200°F operating pressure
  • Withstands temperatures up to 230°F maximum
  • Operates down to 32°F minimum temperature
  • Schedule 40 welded steel construction for durability

Specifications

BrandZORO SELECT
ColorTransparent
TypePipes, Valves & Fittings

Questions about this item

How do I install the 3-1/2" MNPT threaded end without damaging the polyethylene liner?

Wrap PTFE tape on the male threads only, tighten with a pipe wrench on the steel hex area, and stop when the joint feels firm to avoid crushing the internal liner.

What part of this dielectric nipple will need replacement first in a hot water system?

The polyethylene liner is the wear item; it can degrade after prolonged exposure near the 230 °F maximum temperature, requiring full nipple replacement.

What pressure limit appears first during sustained high-temperature operation?

The 150 psi rating at 200 °F is the governing limit; pressure must stay at or below this value when the water temperature approaches that level.

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