Weil McLain 560-742-915 Aluminum Tube
The Weil McLain 560-742-915 Aluminum Tube is a 100 in. length of aluminum alloy 3003 tube with a 0.25 in. outside diameter and a 0.032 in. wall. The distributor description reads "AL3003 Tube, 0.25 OD x 0.032 x 100 in," and the catalog designation is "Tube AL3003-0.25ODx0.032x100in." It is straight stock tube, so you cut it to length and form the bends you need for the repair.
Aluminum 3003 is a soft, formable alloy, which is why it is used for small gas and sense tubing: it bends without cracking, resists corrosion, and seats cleanly under a compression fitting. A 100 in. length is long enough to make a full replacement line, or several shorter ones, without waiting on a formed tube. That is useful when the original tube is gone, damaged or routed differently, or when you want to run a new line to match the old one exactly.
To make a good line, cut the tube square with a tubing cutter instead of a saw, remove the burr inside and out, and bend it with a tube bender or a gentle hand radius so it does not kink or flatten. Use fresh fittings and tighten them snugly without over-torquing, because aluminum is softer than copper. After the line is installed, leak-test every joint with an approved solution before you leave. Keep the leftover length straight and protected so you have clean stock for the next job. Confirm the diameter and wall against the original line before you order, and confirm compatibility with your boiler.
Key Benefits
- 100 In. of Stock Tube: Enough length to cut and form a full replacement line or several shorter ones.
- Aluminum Alloy 3003: A soft, corrosion-resistant alloy that bends easily and seats cleanly in compression fittings.
- 0.25 In. OD, 0.032 In. Wall: The dimensions are part of the catalog designation, so you can match your original.
- Cut and Bend to Fit: Straight stock lets you match the original routing exactly.
Common Questions
- What are the dimensions of the 560-742-915? 0.25 in. outside diameter, 0.032 in. wall, 100 in. long, in aluminum alloy 3003.
- Is it pre-formed? No. It is straight stock tube that you cut and bend to fit.
- What fittings do I use? Standard compression fittings sized for 1/4 in. tube. Use new fittings and leak-test every joint.