Pumps & Plumbing

Marine & RV Pumps and Plumbing: The Systems That Keep You Comfortable Underway

Whether you're living aboard a cruising sailboat, outfitting a blue-water powerboat, or maintaining an RV for cross-country travel, your pumps and plumbing systems are among the most essential — and most overlooked — elements of your setup. From freshwater pressure pumps and bilge pumps to marine heads, macerators, seacocks, and holding tank systems, every component in your plumbing network plays a direct role in comfort, safety, and regulatory compliance.

Unlike residential plumbing, marine and RV plumbing must endure constant vibration, exposure to saltwater and chemicals, space constraints, and the demands of off-grid operation. Selecting the right components — built for the unique stresses of life on the water or the road — makes the difference between a system that performs flawlessly for years and one that fails at the worst possible moment.

What's Included in Pumps & Plumbing

This category spans a wide range of systems and hardware. Explore the full Plumbing subcategory for components including freshwater delivery pumps, water pressure systems, sanitation equipment, macerators, waste management fittings, thru-hull hardware, seacocks and valves, strainers, hoses, and more. Whether you need a complete toilet system or a replacement fitting, this is your destination for the full plumbing ecosystem.

Top Brands in Pumps & Plumbing

Dometic is one of the most recognized names in marine and RV plumbing. Their pump lineup is designed to handle everything from freshwater distribution to waste discharge. Dometic pumps are engineered for both bilge water removal and freshwater delivery, and their VacuFlush and SeaLand sanitation systems are trusted aboard vessels of all sizes. Their magnetic-drive circulation pumps are especially popular for marine air conditioning and water system applications.

Thetford is widely regarded as the world's leading manufacturer of mobile sanitation products for the RV, marine, camping, and truck markets. Thetford's plumbing lineup covers everything from compact cassette toilets and portable Porta Potti units to macerating pumps and holding tank systems. Their Sanicon macerator systems offer a permanent, mess-free solution for RV waste management, and their commitment to reliable performance in compact designs has made them a trusted name for over 50 years.

Groco has been producing marine hardware and plumbing products since 1918, and the Maryland-based, family-owned company remains synonymous with quality American-made marine fittings. Groco is particularly known for its bronze and stainless steel seacocks, thru-hull fittings, raw water strainers, valves, and pumps. Their products are used in both recreational and commercial vessels, and their E-Valve line allows remote control of onboard seacocks with the push of a button.

Camco is a go-to brand for RV plumbing accessories and water system components. Camco's product range includes water hoses, inline water filters, pressure regulators, check valves, and sewer system accessories — everything needed to safely connect an RV to campground water supplies or manage waste on the road.

Johnson Pumps brings decades of expertise in marine bilge, livewell, baitwell, and utility pumps. Known for their durable construction and wide range of flow rates, Johnson Pumps products are a staple in boat bilge systems and freshwater applications, trusted by recreational boaters and professional mariners alike.

Choosing the Right Pumps & Plumbing Components

When shopping this category, consider the environment first — marine-grade materials like bronze, stainless steel, and UV-resistant plastics are essential for saltwater exposure. For freshwater systems, look for self-priming pumps with built-in pressure switches for consistent delivery. For sanitation, compatibility with holding tank regulations (especially USCG and EPA requirements for vessels) is critical. And don't overlook fittings, hoses, and seacocks: a properly specified thru-hull fitting and seacock can be a genuine lifesaver. Investing in quality here is never a decision you'll regret.