March Pump Water Pressure System Pumps

March Pump Water Pressure System Pumps: Sealless Precision for Demanding Applications

When it comes to reliable water pressure system pumps, March Pump brings more than seven decades of engineering expertise to every unit. Water pressure system pumps are the heart of any pressurized fluid circuit — whether aboard a vessel, within a hydronic heating loop, or in an industrial process line — and March Pump has been engineering solutions for exactly these environments since the company's founding in 1954.

The Magnetic Drive Advantage

What sets March Pump apart in the water pressure pump segment is its signature sealless magnetic drive technology. Rather than relying on traditional shaft seals — which wear, leak, and rob power — March's design uses a coupled magnetic field to transfer energy to the impeller. The result is a pump that is inherently leak-free and delivers full motor efficiency directly to fluid movement. As March's own documentation notes, "the patented magnetic drive design eliminates the multitude of problems related to shaft seals, including leakage and power draining friction," and full motor horsepower is transferred to pumping power with no loss due to seal friction. For a water pressure system where reliability and consistent output are non-negotiable, this architecture provides a meaningful real-world advantage.

Built for Hydronic and Pressurized Water Systems

March Pump's hydronic and water pressure pump lineup is purpose-built for circulating water and water-glycol blends under pressure. These pumps are available in plastic, bronze, stainless steel, and cast iron construction, making them adaptable to a wide range of system temperatures and fluid chemistries. Certain models are rated for fluid temperatures as high as 350°F, while special designs can withstand temperatures up to 500°F — well beyond what standard water pressure pumps are expected to handle. Flow rates span from under 1 GPM all the way up to 200 GPM with heads up to 160 feet, covering everything from compact onboard marine systems to full building hydronic circuits. Models such as the Series 821 and Series 830 hydronic pumps are specifically engineered for continuous-duty circulation in pressurized loops.

Marine and Multi-Application Versatility

March Pump water pressure system pumps see broad use in marine environments — including boat air conditioning, freshwater supply, and onboard plumbing — as well as in chillers, solar heating, and water treatment systems. The compact Series 1, Series 2, and Series 3 mag drive pumps are well suited for smaller pressurized circuits, while the larger Series 5, 6, and 8 families handle higher-flow, higher-head demands. Both AC and DC motor configurations are offered, giving installers flexibility whether the application is shore-powered or running off a 12V or 24V DC electrical system.

American-Made Quality and Easy Serviceability

Every March Pump water pressure pump is manufactured and assembled in Glenview, Illinois. The company performs its own injection molding, machining, and motor production in-house, maintaining tight quality control across the entire product. When service is needed, March pumps are designed so that motors can be separated from pump housings without draining the system, and most maintenance requires no special tools. A global network of more than 150 stocking service locations ensures parts availability worldwide.

Whether you're sourcing a replacement for a marine freshwater system or specifying a pump for a hydronic loop, explore the full March Pump brand page or browse all water pressure system pumps to find the right fit for your application.