Sea-Dog Garboard Drain T-Handle Plug 520047-1, 3/4 Inch NPT, Die Cast Bronze, Replaces 520046-1
Sea-Dog Garboard Drain T-Handle Plug 520047-1, 3/4 Inch NPT, Die Cast Bronze, Replaces 520046-1
The Sea-Dog Garboard Drain T-Handle Plug (520047-1) is a die cast bronze plug built to seal the garboard drain opening in a boat hull during use and provide quick, tool-free drainage at haul-out. The plug uses a 3/4 inch NPT tapered thread, which draws down tighter as it is turned in to create a watertight seal against the hull fitting without requiring a separate gasket or sealant. A T-handle head lets the plug be hand-tightened and removed without wrenches or tools, which is useful when a boat needs to be drained quickly on a trailer or in dry storage. Bronze construction resists the corrosion that saltwater and constant wet/dry cycling cause in plain steel hardware, making it suited to long-term use in a through-hull drain location. The plug measures 3-1/2 inches overall with a 3/4 inch NPT thread size, and is designed as a direct fit for garboard drain fittings machined to that same 3/4 inch NPT thread. It is intended as a replacement plug and is cross-referenced to Sea-Dog part number 520046-1.
Specifications
- Brand: Sea-Dog
- Manufacturer Part Number: 520047-1
- Product Type: Garboard Drain T-Handle Plug
- Material: Die Cast Bronze
- Thread Size: 3/4 inch NPT
- Overall Length: 3-1/2 inches
- Weight: 0.466 pounds
- Seal Type: Tapered NPT thread, watertight
Fitment
Fits garboard drain openings machined with a 3/4 inch NPT thread.
Replaces (OEM)
- 520046-1
Frequently Asked Questions
What thread size does the Sea-Dog 520047-1 garboard drain plug use? The Sea-Dog 520047-1 uses a 3/4 inch NPT tapered thread, which draws tight as it is screwed in to create a watertight seal in the garboard drain fitting.
Is the 520047-1 plug made of metal or plastic? It is die cast bronze, chosen for its resistance to corrosion in the wet, saltwater-exposed environment of a garboard drain opening.
Does this plug require tools to install or remove? No tools are needed. The 520047-1 has a T-handle design so it can be hand-tightened and removed by hand, which is convenient for quick draining at haul-out.
What does 520047-1 replace? The Sea-Dog 520047-1 is cross-referenced as a replacement for Sea-Dog part number 520046-1.
How long is the 520047-1 plug overall? It measures 3-1/2 inches overall with a 3/4 inch NPT thread section.
How much does the 520047-1 garboard drain plug weigh? It weighs 0.466 pounds.
Does the 520047-1 plug need a separate gasket or sealant to seal properly? No separate gasket is required. The 3/4 inch NPT tapered thread on the 520047-1 is designed to provide a watertight seal on its own as it is tightened into the drain fitting.
What is a garboard drain plug used for? A garboard drain plug like the 520047-1 seals the garboard drain opening in a boat hull and is removed to let bilge water drain out during haul-out or storage.
Is the Sea-Dog 520047-1 plug bronze or nylon? The 520047-1 is die cast bronze. Sea-Dog also offers nylon garboard drain and plug assemblies as a lighter-duty alternative, but the 520047-1 itself is metal.
Will the 520047-1 fit any garboard drain opening? It fits garboard drain openings that are machined with a 3/4 inch NPT thread, matching the thread size of this plug.