SEAFLO 53-Series 12V Diaphragm Water Pump — 7.0 GPM, 60 PSI, Self-Priming, Continuous Duty

The SEAFLO 53-Series DC diaphragm pump is a heavy-duty 12V water pump delivering up to 7.0 GPM at 60 PSI with self-priming, an integrated bypass and an automatic pressure switch for reliable on-demand operation.

Built for rugged use in marine, RV, agricultural and general-purpose water systems, this model (SFDP1-070-060-53) combines high flow with stable pressure control. Durable EPDM valves and a Santoprene diaphragm resist corrosion in fresh and salt water, while 1/2" NPT ports and a 6-foot suction lift simplify installation and site placement. A four-year limited warranty underscores SEAFLO's focus on longevity for continuous-duty environments.

How much water can this pump deliver and what systems will it support?

This pump provides a maximum open flow of 7.0 gallons per minute (26.5 LPM) and a shut-off pressure of 60 PSI (4.2 bar), enough to supply multiple fixtures or equipment simultaneously. It’s suited to systems that need steady, high-volume output without frequent cycling.

• 7.0 GPM (26.5 LPM) maximum flow rate
• Supports up to about six mid-flow fixtures depending on plumbing layout
• 60 PSI shut-off for consistent pressure delivery
• 1/2" NPT ports for standard piping connections

Will this pump handle intermittent or continuous use?

Designed for continuous-duty applications, the SEAFLO 53-Series tolerates extended runtimes common in agricultural transfer, marine washdown, and mobile living systems. The built-in bypass and pressure switch reduce cycling and motor strain during variable demand.

• Continuous-duty rating for prolonged operation
• Integrated bypass avoids short cycling under low flow
• Automatic pressure switch enables on-demand start/stop
• Run-dry safe design for flexible deployment

How easy is it to install and maintain this pump?

Installation is straightforward with 1/2" NPT pipe threads and a compact footprint that fits tight spaces in boats, RVs, and equipment enclosures. Maintenance needs are minimized by robust materials and a self-priming capability that reduces dependency on external priming hardware.

• 1/2" NPT inlet and outlet ports for common fittings
• Self-priming up to 6 feet (1.8 m) suction lift
• EPDM valves and Santoprene diaphragm for low-maintenance corrosion resistance
• Accessible mounting points for secure installation

Is this pump suitable for saltwater and what operating limits should I know?

The SEAFLO 53-Series is built to perform in both fresh and saltwater environments thanks to corrosion-resistant valve and diaphragm materials. Observe the maximum recommended fluid temperature and electrical requirements to ensure dependable service.

• Compatible with fresh and salt water applications
• Max recommended fluid temperature: 140°F (60°C)
• Electrical: 12V DC supply required
• Model number: SFDP1-070-060-53 with 4-year limited warranty

Who is this for: The SEAFLO 53-Series 12V diaphragm pump is meant for boat owners, RV customers, small-scale agriculture users, and professionals needing a compact, high-volume pump that withstands continuous operation. If you require consistent flow, reliable pressure control, and corrosion-resistant components in a self-priming 12V package — with straightforward plumbing connections and a multi-year warranty — this pump is a practical choice.