Sea-Dog Line 520750-1 Thru-Hull Fitting 3/4 Inch Polypropylene

The Sea-Dog Line 520750-1 is a 3/4-inch thru-hull fitting designed for reliable performance in marine drainage applications above the waterline. Constructed from injection-molded polypropylene, this fitting is completely impervious to electrolysis and corrosion, making it an excellent choice for saltwater environments where metal fittings would deteriorate over time.

Key Features:

• 3/4-inch size for standard marine hose connections
• Injection-molded polypropylene construction resists corrosion and electrolysis
• Ideal for saltwater applications where metal fittings fail
• Designed for above-waterline drainage systems
• Allows controlled water passage in or out of the vessel
• Lightweight and durable plastic construction

This thru-hull fitting connects to standard marine hose and provides a secure, corrosion-free solution for cockpit drains, livewell overflows, washdown systems, and other above-waterline plumbing applications. The polypropylene material ensures long-term reliability without the galvanic corrosion issues associated with bronze or stainless steel fittings in saltwater environments.