Watts Radiant Onix Fittings

Onix is the fastest, friendliest, and safest radiant heat tube you can specify or install. It installs with less labor and takes jobsite abuse better than any other radiant tubing. Onix is Aramid reinforced EPDM with an aluminum oxygen barrier.

Onix is the product that can be installed with lifelong confidence in blazing heat and sunlight, or in Arctic frost and shadows. Used for commercial snowmelting, space heating, residential staple-up and supply/return lines, you'll find Onix installed in thousands of quality projects every year. Onix is ICC listed.
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- Onix Radiant Tubing Brochure (540 KB Adobe PDF)
- Onix Fact Sheet (1.2 MB Adobe PDF)
- Onix Installation Guide (7MB Adobe PDF)
- Watts Onix Radiant Brochure (1.2 MB Adobe PDF)

Items that are not in stock will be ordered into our warehouse and immediately shipped out to the customer. We will notify the customer of stock status at the time we receive the order. To be on the safe side, plan your project ahead of time and allow a couple of weeks for delivery.

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Onix x BSP Swivel Fitting
3/8 in. Onix x 3/4 in. BSP Swivel Fitting (Pack of 10) Weight: 1 lb Model#: 689001-10 Order#: 81000679	$58.50
1/2 in. Onix x 3/4 in. BSP Swivel Fitting (Pack of 10) Weight: 1 lb Model#: 689002-10 Order#: 81000681	$60.00
5/8 in. Onix x 3/4 in. BSP Swivel Fitting (Pack of 10) Weight: 2 lb Model#: 689003-10 Order#: 81000683	$69.00
3/4 in. Onix x 3/4 in. BSP Swivel Fitting (Pack of 10) Weight: 2 lb Model#: 689004-10 Order#: 81000684	$72.25
Onix x Male Sweat Adapter
3/8 in. Onix x 1/2 in. Male Sweat Adapter (Pack of 10) Weight: 1 lb Model#: 684001-10 Order#: 81000659	$21.75
3/8 in. Onix x 1/2 in. Male Sweat Adapter (Pack of 50) Weight: 4 lb Model#: 684001-50 Order#: 81000660	$108.25
1/2 in. Onix x 1/2 in. Male Sweat Adapter (Pack of 10) Weight: 1 lb Model#: 685001-10 Order#: 81000663	$23.00
1/2 in. Onix x 1/2 in. Male Sweat Adapter (Pack of 50) Weight: 4 lb Model#: 685001-50 Order#: 81000664	$114.25
5/8 in. Onix x 1/2 in. Male Sweat Adapter (Pack of 10) Weight: 1 lb Model#: 686001-10 Order#: 81000667	$29.00
5/8 in. Onix x 1/2 in. Male Sweat Adapter (Pack of 50) Weight: 4 lb Model#: 686001-50 Order#: 81000668	$145.00
3/4 in. Onix x 3/4 in. Male Sweat Adapter (Pack of 10) Weight: 2 lb Model#: 687001-10 Order#: 81000671	$53.00
3/4 in. Onix x 3/4 in. Male Sweat Adapter (Pack of 50) Weight: 9 lb Model#: 687001-50 Order#: 81000672	$263.75
1 in. Onix x 1 in. Male Sweat Adapter (Pack of 10) Weight: 4 lb Model#: 688001-10 Order#: 81000675	$70.00
Onix x MPT
Coming Soon
Male BSP x Male Sweat Fitting
3/4 in. Male BSP x 1/2 in. Male Sweat Fitting (Pack of 10) Weight: 1 lb Model#: PX690500-10 Order#: 81001507	$48.25
3/4 in. Male BSP x 3/4 in. Male Sweat Fitting (Pack of 10) Weight: 1 lb Model#: PX690750-10 Order#: 81001510	$49.50
Onix x Female Sweat Elbow
1/2 in. Onix x 3/4 in. Female Sweat Elbow (Pack of 10) Weight: 3 lb Model#: 185074-10 Order#: 81000116	$47.00
5/8 in. Onix x 3/4 in. Female Sweat Elbow (Pack of 10) Weight: 3 lb Model#: 185625-10 Order#: 81000120	$51.00
3/4 in. Onix x 3/4 in. Female Sweat Elbow (Pack of 10) Weight: 3 lb Model#: 185075-10 Order#: 81000118	$58.25
Onix x Male Sweat Elbow
1/2 in. Onix x 3/4 in. Male Sweat Elbow (Pack of 10) Weight: 3 lb Model#: 186074-10 Order#: 81010464	$45.75
5/8 in. Onix x 3/4 in. Male Sweat Elbow (Pack of 10) Weight: 3 lb Model#: 186625-10 Order#: 81010466	$49.50
3/4 in. Onix x 3/4 in. Male Sweat Elbow (Pack of 10) Weight: 3 lb Model#: 186075-10 Order#: 81010465	$56.50
SelfTite Onix Repair Kit
3/8 in. SelfTite Onix Repair Kit (2 couplings, 4 clamps) Weight: 1 lb Model#: 660075 Order#: 81000507	$11.75
1/2 in. SelfTite Onix Repair Kit (2 couplings, 4 clamps) Weight: 1 lb Model#: 660085 Order#: 81000509	$12.50
5/8 in. SelfTite Onix Repair Kit (2 couplings, 4 clamps) Weight: 2 lb Model#: 660105 Order#: 81000511	$16.75
3/4 in. SelfTite Onix Repair Kit (2 couplings, 4 clamps) Weight: 2 lb Model#: 660125 Order#: 81000513	$17.50
TorqueTite Onix Repair Kit
3/8 in. TorqueTite Repair Kit (2 couplings, 4 clamps) Weight: 1 lb Model#: 660076 Order#: 81000508	$17.50
1/2 in. TorqueTite Repair Kit (2 couplings, 4 clamps) Weight: 1 lb Model#: 660086 Order#: 81000510	$24.50
5/8 in. TorqueTite Repair Kit (2 couplings, 4 clamps) Weight: 2 lb Model#: 660106 Order#: 81000512	$29.50
3/4 in. TorqueTite Repair Kit (2 couplings, 4 clamps) Weight: 2 lb Model#: 660126 Order#: 81000514	$30.75
Onix x Onix Coupling
3/8 in. Onix Coupling (Pack of 10) Weight: 1 lb Model#: 677062-10 Order#: 81000611	$14.75
1/2 in. Onix Coupling (Pack of 10) Weight: 1 lb Model#: 677082-10 Order#: 81000615	$19.75
5/8 in. Onix Coupling (Pack of 10) Weight: 1 lb Model#: 677101-10 Order#: 81000618	$26.75
3/4 in. Onix Coupling (Pack of 10) Weight: 1 lb Model#: 677121-10 Order#: 81000621	$35.50
1 in. Onix Coupling (Pack of 10) Weight: 2 lb Model#: 677122-10 Order#: 81000623	$60.75
Onix x Male Seat Mini Ball Valve
3/8 in. Onix x 1/2 in. Male Swt (Cu Ftg) Mini Ball Valve (0.44 in. bore) Weight: 3 lb Model#: 446105 Order#: 81000366	$10.25