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Flair-It 1/2 in. PEX X 3/8 in. D MPT Plastic Male Adapter

Flair-It 1/2 in. PEX X 3/8 in. D MPT Plastic Male Adapter

Flair-It 1/2 in PEX x 3/8 in D MPT Plastic Male Adapter is a compact, lead-free solution designed to bridge a 1/2" PEX supply line to a 3/8" male pipe thread. Crafted from durable…

Flair-It MPN 16852
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Typical store price: low $2.99, average $3.99
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About Product Overview

Flair-It 1/2 in PEX x 3/8 in D MPT Plastic Male Adapter is a compact, lead-free solution designed to bridge a 1/2" PEX supply line to a 3/8" male pipe thread. Crafted from durable plastic, this connector stays corrosion-free, lightweight, and ready for everyday plumbing tasks without the need for soldering or bulky metal fittings. ANSI certified, it blends reliability with a simple installation that DIYers and professionals will appreciate.
  • What it does: Joins 1/2" PEX tubing to a 3/8" male pipe thread (MPT) with a sturdy, non-metallic body.
  • Material and build: Lead-free plastic construction minimizes corrosion risks and reduces weight while maintaining structural integrity in typical residential water applications.
  • Size specifics: End 1 is 1/2" PEX; End 2 is 3/8" MPT, offering a practical adapter for tight spaces and retrofit projects.
  • Brand and certification: Part of the Flair-It lineup, with ANSI certification that supports confidence in standard plumbing installations.
  • Ideal for: Connecting PEX supply lines to threaded components where space is limited, during renovations, repairs, or new installations.

Why choose this Flair-It adapter?

Compared with metal adapters, this plastic Flair-It connector provides a lightweight, corrosion-resistant option that’s easy to handle and install. Its compact form is particularly advantageous in crowded basements, under sinks, or behind appliances where bulk fittings just won’t fit. The 1/2" PEX side ensures a reliable, secure feed, while the 3/8" MPT thread accepts standard threaded fittings, valves, or tails commonly found in plumbing systems.

Practical use cases

  • Retrofitting a PEX supply line to an existing threaded valve or connector in tight crawl spaces.
  • Replacing a corroded metal adapter with a lead-free plastic alternative to reduce galvanic risk.
  • Connecting a new PEX run to a pre-threaded component during kitchen or bathroom remodels.

Installation tips

  1. Ensure threads and PEX ends are clean and free of debris.
  2. On the metal-threaded side, use an appropriate thread sealant or PTFE tape rated for potable water to promote a reliable seal.
  3. Fully thread the 3/8" MPT end into the corresponding component and snug firmly with a wrench, taking care not to overtighten.
  4. Connect the 1/2" PEX side using your preferred PEX joining method (crimp, clamp, or expansion) as dictated by your system.
  5. Check for leaks after pressure is restored and tighten as needed.

Designed for versatile, everyday plumbing tasks, the Flair-It 1/2 in PEX x 3/8 in D MPT Plastic Male Adapter offers a reliable, lead-free way to connect PEX to threaded piping. Its simple, durable design helps you complete projects faster with fewer tools, while maintaining the integrity of your potable-water system.

The Details Specifications

Brand Flair-It
SKU 4165916
UPC 742979168526
Unit 0
Case Pack Quantity 100 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 2 × 1 × 1
Weight 0 lbs
Cubic Feet 0.00328 ft³
Country of Origin CHILE
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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