Sea-Dog Brass Drain Tube, 1 Inch x 2-7/8 Inch, Part 520230-1

The Sea-Dog Brass Drain Tube, part number 520230-1, is a formed brass drain fitting designed for transom, motorwell, livewell, and baitwell drain applications on boats. The tube is flanged 90 degrees on one end, which allows it to seat cleanly into the hull or compartment wall while directing water flow out through the opposite straight end. It is built for use with brass or stainless steel drain plugs, making it a common component in boat drain plug systems where a plug threads into the flanged end to seal the opening when not draining.

This drain tube has a 1 inch inside diameter and measures 2-7/8 inches (dimension B) in length, with a formed brass construction that resists corrosion in marine environments. Installation requires a Drain Tube Flaring Tool (520290-1 or 520295-1), which is used to flare the tube end during fitting. The 1 inch diameter size shown here is part of a broader Sea-Dog Formed Drain Tube lineup that is also available in a 1-1/4 inch diameter, so boat owners should confirm the correct inside diameter for their existing drain plug or fitting before ordering.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 520230-1
• Inside Diameter: 1 inch
• Length (Dimension B): 2-7/8 inches
• Weight: 0.108 pounds
• Material: Formed brass
• Color/Finish: Brass
• End Style: 90 degree flanged on one end
• Compatible Drain Plug Types: Brass or stainless steel drain plugs
• Required Installation Tool: Drain Tube Flaring Tool (520290-1 or 520295-1)

Fitment

Designed for transom, motorwell, livewell, and baitwell drain applications; universal fit based on 1 inch inside diameter rather than a specific boat make or model.

Frequently Asked Questions

What is the inside diameter of the Sea-Dog 520230-1 drain tube? The Sea-Dog 520230-1 drain tube has a 1 inch inside diameter.

How long is this drain tube? Part number 520230-1 measures 2-7/8 inches, which is the tube's B dimension from the flanged end.

What material is the Sea-Dog drain tube made from? It is constructed of formed brass, giving it corrosion resistance for marine drain applications.

What is this drain tube used for? Sea-Dog part 520230-1 is used as a drain for transom, motorwell, livewell, or baitwell applications on a boat.

Does this drain tube work with any drain plug? The 520230-1 drain tube is designed for use with brass or stainless steel drain plugs.

Do I need a special tool to install this drain tube? Yes, installation of the Sea-Dog 520230-1 requires a Drain Tube Flaring Tool, either part 520290-1 or 520295-1.

Is the drain tube flanged on both ends? No, the 520230-1 is flanged 90 degrees on only one end; the other end is straight for flaring during installation.

Is this drain tube available in other sizes? Sea-Dog offers this formed drain tube design in 1 inch and 1-1/4 inch diameters; part 520230-1 is the 1 inch by 2-7/8 inch version.

How much does the Sea-Dog 520230-1 drain tube weigh? This drain tube weighs 0.108 pounds.

What color or finish does this drain tube have? The 520230-1 has a natural brass finish, consistent with its formed brass construction.