Watts Radiant RadiantPEX-AL Compression Fittings

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We are closed for vacation through 4/02/23.

Orders and email requests will be held until we resume normal operations on Monday, April 3, 2023. We apologize for any inconvenience.

We are a small family business, and after four years and COVID we need a vacation!

Directory: Catalog > Radiant Heating > Watts Radiant Pipe, Fittings, Manifolds, Etc.

Watts Radiant RadiantPEX-AL Compression Fittings (Heating Only - Not for Potable)

RadiantPEX-AL is a composite pipe engineered for radiant floor heating. We call it ALEX Pipe. It's proven, long lasting and maintenance-free. Installers like it because it's lightweight, durable and can be shaped to fit any jobsite. The aluminum layer protects boiler systems against corrosion and it has superior temperature and pressure ratings.

ALEX Pipe is manufactured to American Standard Testing Methods for composite radiant pipe and fittings (ASTM F-1281). Included are requirements and test methods for materials, workmanship, dimensions, environmental stress cracking, sustained hydrostatic pressure strength, thermo-cycling resistance and bend strength among other tests. RadiantPEX-AL meets or exceeds these specifications.

Download Literature: Loading times will vary depending on the speed of your Internet connection. After the download is complete, use your browser's back arrow to return to this page.
- Watts Radiant Heating - Full Catalog (7.4 MB Adobe PDF)
- RadiantPEX-AL Brochure (600 KB Adobe PDF)
- RadiantPEX-AL Compression Fittings Brochure (425 KB Adobe PDF)
- Watts Pipe Installation Manual (4.6 MB Adobe PDF)

Due to supply issues, please Contact Us for pricing and lead time.

SST20 BSP Adapter

3/8 in. Compression x 3/4 in. SST20 BSP Adapter
(Pack of 10)
Weight: 1 lbs.
Model#: RLC01B06T20-10
Order#: 81011138

1/2 in. Compression x 3/4 in. SST20 BSP Adapter
(Pack of 10)
Weight: 1 lbs.
Model#: RLC01B08T20-10
Order#: 81010735

5/8 in. Compression x 3/4 in. SST20 BSP Adapter
(Pack of 10)
Weight: 2 lbs.
Model#: RLC01B10T20-10
Order#: 81008088

3/4 in. Compression x 3/4 in. SST20 BSP Adapter
(Pack of 10)
Weight: 2 lbs.
Model#: RLC01B12T20-10
Order#: 81007735

Compression x Male Sweat Adapter

3/8 in. Compression x 1/2 in. Male Sweat Adapter
(Pack of 10)
Weight: 1 lbs.
Model#: RLC10B0608-10
Order#: 81011139

1/2 in. Compression x 1/2 in. Male Sweat Adapter
(Pack of 10)
Weight: 1 lbs.
Model#: RLC10B0808-10
Order#: 81010731

5/8 in. Compression x 1/2 in. Male Sweat Adapter
(Pack of 10)
Weight: 1 lbs.
Model#: RLC10B1008-10
Order#: 81008092

5/8 in. Compression x 3/4 in. Male Sweat Adapter
(Pack of 10)
Weight: 2 lbs.
Model#: RLC10B1012-10
Order#: 81008094

3/4 in. Compression x 3/4 in. Male Sweat Adapter
(Pack of 10)
Weight: 2 lbs.
Model#: RLC10B1212-10
Order#: 81008096

1 in. Compression x 1 in. Male Sweat Adapter
(Pack of 5)
Weight: 3 lbs.
Model#: RLC10B1616-5
Order#: 81008098

Compression x Female Sweat Adapter

3/8 in. Compression x 1/2 in. Female Sweat Adapter
(Pack of 10)
Weight: 1 lbs.
Model#: RLC11B0608-10
Order#: 81011140

1/2 in. Compression x 1/2 in. Female Sweat Adapter
(Pack of 10)
Weight: 1 lbs.
Model#: RLC11B0808-10
Order#: 81010732 (previously 81008100)

5/8 in. Compression x 3/4 in. Female Sweat Adapter
(Pack of 10)
Weight: 2 lbs.
Model#: RLC11B1012-10
Order#: 81008102

3/4 in. Compression x 3/4 in. Female Sweat Adapter
(Pack of 10)
Weight: 2 lbs.
Model#: RLC11B1212-10
Order#: 81008104

1 in. Compression x 1 in. Female Sweat Adapter
(Pack of 5)
Weight: 2 lbs.
Model#: RLC11B1616-5
Order#: 81013675

Compression x MPT Adapter

1/2 in. Compression x 3/4 in. MPT Adapter
(Pack of 10)
Weight: 2 lbs.
Model#: RLC12B0812-10
Order#: 81010729

5/8 in. Compression x 3/4 in. MPT Adapter
(Pack of 10)
Weight: 2 lbs.
Model#: RLC12B1012-10
Order#: 81008108

3/4 in. Compression x 3/4 in. MPT Adapter
(Pack of 10)
Weight: 3 lbs.
Model#: RLC12B1212-10
Order#: 81008110

1 in. Compression x 1 in. MPT Adapter
(Pack of 5)
Weight: 3 lbs.
Model#: RLC12B1616-5
Order#: 81008112

Compression x FPT Adapter

1 in. Compression x 1 in. FPT Adapter
(Pack of 5)
Weight: 2 lbs.
Model#: RLC13B1616-5
Order#: 81013676

Compression Coupling

3/8 in. Compression Coupling
(Pack of 10)
Weight: 1 lbs.
Model#: RLC15B0606-10
Order#: 81011141

1/2 in. Compression Coupling
(Pack of 10)
Weight: 1 lbs.
Model#: RLC15B0808-10
Order#: 81010716

5/8 in. Compression Coupling
(Pack of 10)
Weight: 1 lbs.
Model#: RLC15B1010-10
Order#: 81008116

3/4 in. Compression Coupling
(Pack of 10)
Weight: 2 lbs.
Model#: RLC15B1212-10
Order#: 81008118

1 in. Compression Coupling
(Pack of 5)
Weight: 2 lbs.
Model#: RLC15B1616-5
Order#: 81008120

Compression Elbow

5/4 in. Compression Elbow
(Pack of 10)
Weight: 1 lbs.
Model#: RLC19B1010-10
Order#: 81008122

3/4 in. Compression Elbow
(Pack of 10)
Weight: 2 lbs.
Model#: RLC19B1212-10
Order#: 81008124

1 in. Compression Elbow
(Pack of 5)
Weight: 2 lbs.
Model#: RLC19B1616-5
Order#: 81008127

Compression Tee

3/4 in. Compression Tee
(Pack of 10)
Weight: 3 lbs.
Model#: RLC18B121212-10
Order#: 81008129

1 in. Compression Tee
(Pack of 5)
Weight: 3 lbs.
Model#: RLC18B161616-5
Order#: 81008131

Please Note: We are closed for vacation through 4/02/23.

Orders and email requests will be held until we resume normal operations on Monday, April 3, 2023. We are a small family business, and after four years with no vacation we promise that we will be back on April 3 to go another four years with no vacation!