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Smith-Cooper 3/4 in. FPT X 3/4 in. D FPT Stainless Steel Union

The Smith-Cooper 3/4 in. FPT x 3/4 in. FPT Stainless Steel Union is built to simplify pipe connections where two 3/4" threaded runs meet. With a lead-free stainless steel body and…

Smith-Cooper MPN 4638102640 In Stock & Ready to Ship
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About Product Overview

The Smith-Cooper 3/4 in. FPT x 3/4 in. FPT Stainless Steel Union is built to simplify pipe connections where two 3/4" threaded runs meet. With a lead-free stainless steel body and two 3/4" female pipe thread (FPT) ends, this union provides a dependable, corrosion-resistant join for potable-water and light-industrial piping.

Why this union stands out

  • Lead-free stainless construction delivers peace of mind for drinking water systems and reduces corrosion risk in challenging environments.
  • Two identical 3/4" FPT ends make it straightforward to connect two compatible pipes or fittings with female threads, enabling clean, secure assemblies in tight spaces.
  • Retail-ready carded packaging supports quick selection on the shelf, while the durable stainless body resists rust, staining, and chemical exposure over time.

Practical applications and use cases

  • Residential and commercial potable water lines where a quick, dependable union is needed to join 3/4" threaded sections.
  • Heating and cooling loops, boiler feed systems, or radiant systems that demand corrosion-resistant connections.
  • Repairs or retrofits where existing 3/4" FPT piping requires a simple, leak-tested joint without soldering or welding.

How to install for best results

  • Ensure mating threads are clean and free of debris before assembly.
  • Apply an appropriate pipe-thread sealant or PTFE tape compatible with metal threads to the male sides that will mate with these FPT ends.
  • Hand-tighten the union, then snug with a wrench just enough to create a seal. Avoid over-tightening, which can damage threads or the fitting.
  • After installation, perform a leak test by gradually pressurizing and inspecting for any seepage around the joints.

Designed for reliability in everyday piping tasks, the Smith-Cooper 3/4 in. FPT x 3/4 in. FPT Stainless Steel Union combines durable materials with sensible, serviceable design. It’s an ideal choice for professionals and DIY enthusiasts who value long-lasting performance, straightforward installation, and safer, lead-free construction for water systems.

The Details Specifications

Brand Smith-Cooper
SKU 4215174
UPC 092201426215
Unit 0
Case Pack Quantity 5 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 2 × 4 × 4
Weight 0 lbs
Cubic Feet 0.00463 ft³
Country of Origin VIETNAM
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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