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Adapters

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Water Armor® 1” PEX X ¾” Lead-free* MNPT Adapter

$101.20 ($4.05 per pc)

Pack Size: 25 Pack

WAEA540JG-025
Made in the USA

Fitting Type: MNPT, Size: 1 x 0.75, Pack Size: 25 Pack

Out of Stock

Water Armor® 1” PEX X 1” Lead-free* MNPT Adapter

$158.95 ($6.36 per pc)

Pack Size: 25 Pack

WAEA550JG-025
Made in the USA

Fitting Type: MNPT, Size: 1.0 x 1.0, Pack Size: 25 Pack

Out of Stock

Water Armor® ½” x ¾” Lead-free* MNPT Adapter

$78.18 ($3.13 per pc)

Pack Size: 25 Pack

WAEA340JG-025
Made in the USA

Fitting Type: MNPT, Size: 0.5 x 0.75, Pack Size: 25 Pack

Water Armor® Lead-free* 3/4” PEX Male Sweat Adapter

$53.36 ($2.13 per pc)

Pack Size: 25 Pack

WAEA440JS-025
Made in the USA

Fitting Type: Male Sweat, Size: 0.75, Pack Size: 25 Pack

Water Armor® Lead-free* 1/2” PEX Male ECO BRASS® Sweat Adapter

$28.59 ($1.14 per pc)

Pack Size: 25 Pack

WAEA330JS-025
Made in the USA

Fitting Type: Male Sweat, Size: 0.5, Pack Size: 25 Pack

3/4" x 3/4" Brass PEX Female Sweat Adapter

Water Armor® Lead-free* 3/4” PEX Female Sweat Adapter

$49.38 ($1.98 per pc)

Pack Size: 25 Pack

WAEA440JF-025
Made in the USA

Fitting Type: Female Sweat, Size: 0.75, Pack Size: 25 Pack

Water Armor® 1” PEX X 1” Lead-free* Male Sweat Adapter

$72.88 ($2.92 per pc)

Pack Size: 25 Pack

WAEA550JS-025
Made in the USA

Fitting Type: Male Sweat, Size: 1.0 x 1.0, Pack Size: 25 Pack

Water Armor® 1” PEX X 1” Lead-free* Female Sweat Adapter

$72.05 ($2.88 per pc)

Pack Size: 25 Pack

WAEA550JF-025
Made in the USA

Fitting Type: Female Sweat, Size: 1.0 x 1.0, Pack Size: 25 Pack

Out of Stock

Water Armor® Lead-free* 1/2” PEX Female ECO BRASS® Sweat Adapter

$24.54 ($0.98 per pc)

Pack Size: 25 Pack

WAEA330JF-025
Made in the USA

Fitting Type: Female Sweat, Size: 0.5, Pack Size: 25 Pack

Water Armor® 3/4” Lead-free* Threaded Female Adapter

$55.59 ($2.22 per pc)

Pack Size: 25 Pack

WAEA440JW-025
Made in the USA

Fitting Type: FNPT, Size: 0.75, Pack Size: 25 Pack

Water Armor® ½” PEX X ¾” Lead-free* Female Sweat Adapter

$43.45 ($1.74 per pc)

Pack Size: 25 Pack

WAEA340JF-025
Made in the USA

Fitting Type: Female Sweat, Size: 0.5 x 0.75, Pack Size: 25 Pack

Out of Stock

Water Armor® Lead-free* 1/2” F1807 PEX Female Threaded Adapter

$45.33 ($1.81 per pc)

Pack Size: 25 Pack

WAEA330JW-025
Made in the USA

Fitting Type: FNPT, Size: 0.5, Pack Size: 25 Pack

Water Armor® 1” PEX x 1” Lead-free* FNPT Adapter

$119.08 ($4.76 per pc)

Pack Size: 25 Pack

WAEA550JW-025
Made in the USA

Fitting Type: FNPT, Size: 1.0 x 1.0, Pack Size: 25 Pack

Out of Stock

Water Armor® 3/4” Lead-free* PEX to 1/2” Threaded Male Adapter

$70.72 ($2.83 per pc)

Pack Size: 25 Pack

WAEA430JG-025
Made in the USA

Fitting Type: MNPT, Size: 0.75 x 0.5, Pack Size: 25 Pack

Water Armor® 3/4” Lead-free* MNPT ECO BRASS® Adapter

$77.67 ($3.11 per pc)

Pack Size: 25 Pack

WAEA440JG-025
Made in the USA

Fitting Type: MNPT, Size: 0.75, Pack Size: 25 Pack

Water Armor® 1/2” Lead-free* PEX to 3/4” Threaded Female Adapter

$63.81 ($2.55 per pc)

Pack Size: 25 Pack

WAEA340JW-025
Made in the USA

Fitting Type: FNPT, Size: 0.5 x 0.75, Pack Size: 25 Pack

Water Armor® 1/2” Lead-free* Male Threaded ECO BRASS® Adapter

$52.84 ($2.11 per pc)

Pack Size: 25 Pack

WAEA330JG-025
Made in the USA

Fitting Type: MNPT, Size: 0.5, Pack Size: 25 Pack

Versatile Brass PEX Adapters for Seamless Material Transitions

Brass PEX adapters are the essential transition fittings that let you connect PEX tubing to copper pipe, threaded valves, or existing plumbing fixtures with confidence. Whether you’re tying into an old copper stub-out, connecting to a threaded shut-off valve, or adapting PEX to a water heater nipple, these versatile fittings bridge the gap between modern PEX systems and traditional plumbing materials. Our complete range includes female sweat adapters for soldering to copper pipe, male and female threaded adapters (MNPT/FNPT) for valve and appliance connections, and specialty configurations for mixing materials without compromising system integrity. Every adapter is designed to create leak-free transitions that hold up under pressure in both residential and commercial installations.

Manufactured in the USA from lead-free ECO BRASS® alloy, these adapters deliver the strength, temperature tolerance, and corrosion resistance that plastic transition fittings can’t match. The high-performance brass construction provides strong, reliable threads that won’t strip under torque, while the material’s inherent antimicrobial properties offer added protection in potable water systems. Each fitting meets NSF/ANSI 61 compliance standards and ASTM F1807 specifications for crimp connections, with pressure and temperature ratings that handle both hot and cold water applications up to 180°F and 190 psi. Compatible with PEX-A, PEX-B, and PEX-C tubing, these adapters work with standard crimp and expansion tools, and threaded ends seal quickly with PTFE tape for professional installations that pass inspection the first time.

Stock your truck or supply warehouse with our contractor-friendly bulk packaging. Our brass PEX adapters give you the inventory variety to handle unexpected transitions without making emergency supply runs. Brass won’t degrade, flake, or lose integrity under pressure like plastic alternatives—delivering the leak-free performance that keeps your reputation solid and your projects on schedule.

Adapters

Water Armor® 1” PEX X ¾” Lead-free* MNPT Adapter

Water Armor® 1” PEX X 1” Lead-free* MNPT Adapter

Water Armor® ½” x ¾” Lead-free* MNPT Adapter

Water Armor® Lead-free* 3/4” PEX Male Sweat Adapter

Water Armor® Lead-free* 1/2” PEX Male ECO BRASS® Sweat Adapter

Water Armor® Lead-free* 3/4” PEX Female Sweat Adapter

Water Armor® 1” PEX X 1” Lead-free* Male Sweat Adapter

Water Armor® 1” PEX X 1” Lead-free* Female Sweat Adapter

Water Armor® Lead-free* 1/2” PEX Female ECO BRASS® Sweat Adapter

Water Armor® 3/4” Lead-free* Threaded Female Adapter

Water Armor® ½” PEX X ¾” Lead-free* Female Sweat Adapter

Water Armor® Lead-free* 1/2” F1807 PEX Female Threaded Adapter

Water Armor® 1” PEX x 1” Lead-free* FNPT Adapter

Water Armor® 3/4” Lead-free* PEX to 1/2” Threaded Male Adapter

Water Armor® 3/4” Lead-free* MNPT ECO BRASS® Adapter

Water Armor® 1/2” Lead-free* PEX to 3/4” Threaded Female Adapter

Water Armor® 1/2” Lead-free* Male Threaded ECO BRASS® Adapter

Versatile Brass PEX Adapters for Seamless Material Transitions

Female Sweat Adapter

MNPT Style PEX Adapter