SHURflo pumps are diaphragm pumps designed for reliable fresh water supply, liquid transfer, spraying, and pressure boosting in marine, RV, agricultural, and industrial applications. Their self-priming diaphragm design, automatic demand control, and pressure switch provide consistent water flow while maintaining stable system pressure. Built with durable materials for high performance and long service life, they are widely used in freshwater systems, livewells, ballast, irrigation, and transfer applications.
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1-2 weeks delivery time SHURflo Nautilus 1.0 compact 12V fresh water pump designed for a single water outlet. Delivers an open-circuit flow rate of 3.8 L/min with maximum current consumption of 2.5A. Features thermal protection and 3/8" connections, and requires connection to a separate switch and 3A fuse. Dimensions: 122 × 66 × 49 mm.
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$ 113.74
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1-2 weeks delivery time SHURflo Lo-Flo 105-013 compact 12V DC fresh water pump for low-flow applications and single-fixture systems. Delivers 3.8 L/min, features a 2.0 bar (30 PSI) shut-off pressure and a maximum working pressure of 2.1 bar. The self-priming pump can run dry and includes built-in 3/8" hose barb ports, pressure demand switch, flexible mounting feet, splash-proof motor, thermal protection and ignition protection. Dimensions: 170 × 100 × 60 mm.
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$ 148.39
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1-2 weeks delivery time SHURflo Aqua King II fresh water pump available in Junior 2.0 and Standard 3.0 versions for 12V and 24V systems. Junior 2.0 models deliver 7.6 L/min at 1.4 or 2.0 bar, while Standard 3.0 models deliver 11.4 L/min at 2.0 or 3.1 bar. All versions measure 208 × 124 × 104 mm. The pump is designed for quiet, reliable operation and can run dry.
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$ 191.19
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1-2 weeks delivery time SHURflo Aqua King II Premium 4.0 high-output fresh water pump for shower systems and installations with multiple water outlets. Available in 12V and 24V versions, both delivering 15.2 L/min with a maximum working pressure of 3.8 bar / 55 PSI. The pump can run dry and measures 254 × 127 × 120 mm.
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$ 266.83
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1-2 weeks delivery time SHURflo Aqua King II Supreme 5.0 high-output fresh water pump for demanding marine water systems. Available in 12V and 24V versions, both delivering 19 L/min (5.0 GPM) with a maximum working pressure of 3.8 bar / 55 PSI. The pump can run dry and features water-protected electronics and thermal protection. Dimensions: 254 × 127 × 120 mm.
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$ 327.02
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1-2 weeks delivery time SHURflo Blaster II powerful self-priming deck wash pump, available in 12V and 24V versions. Both models deliver 13.2 L/min with a maximum working pressure of 3.2 bar / 45 PSI. The pump can run dry and measures 203 × 127 × 118 mm.
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$ 210.97
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1-2 weeks delivery time SHURflo Pro Blaster II deck wash pump available in Deluxe 4.0 and Ultimate 5.0 versions for 12V and 24V systems. Deluxe 4.0 models deliver 15.2 L/min, while Ultimate 5.0 models deliver 19 L/min. All versions have a maximum working pressure of 4.1 bar / 60 PSI and dimensions of 254 × 127 × 120 mm.
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$ 260.38
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1-2 weeks delivery time SHURflo ProBlaster II Deluxe 4.0 complete 12V washdown kit with a self-priming pump delivering 15.2 L/min at up to 4.1 bar. The set includes a 7.6 m flexible coiled hose, spray nozzle with adjustable flow, strainer and connectors. The pump is ignition protected to ISO 8846 and has a current consumption of 10A.
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$ 404.89
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1-2 weeks delivery time SHURflo bilge pump for removing bilge water, available in 12V and 24V versions with capacities from 1438 to 7569 L/hour (380–2000 GPH / 24–126 L/min). Features a patented water-cooled motor, spark protection and ISO 8849 compliance. The pump is not self-priming and can run dry for a limited period. Available with 19 mm or 29 mm outlet connections.
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$ 53.42
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1-2 weeks delivery time SHURflo mercury-free float switch made from corrosion-resistant material for automatic bilge pump control. Suitable for 12V pumps up to 12A and 24V pumps up to 6A. Available as a standard float switch or with a protective housing.
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$ 38.95
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1-2 weeks delivery time SHURflo YellowTail 12V in-line blower designed for permanent use, with a six-blade impeller for high airflow and efficiency. Available in Ø75 mm (3") with 3.4 m³/min airflow and 3.8A consumption, or Ø100 mm (4") with 6.2 m³/min airflow and 5.5A consumption. Features extended barbs and a slotted mounting bracket for installation, complies with ISO 9097 and carries a 3-year warranty.
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$ 50.48
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1-2 weeks delivery time SHURflo macerator pump for grey water, black water, sanitation waste and fish box evacuation. Available in 12V and 24V versions with a maximum flow rate of 49 L/min. Self-priming up to 1.20 m, with a 316 stainless steel dual-blade macerator, polyurethane flexible impeller, thermally protected motor and spark protection. Designed for intermittent duty and capable of running dry for a maximum of 15–20 seconds.
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$ 394.57
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1-2 weeks delivery time SHURflo service kit for the Macerator Pump, product code SH94-570-00. The kit includes an O-ring, two wear plates, gasket, impeller and impeller housing for servicing the pump assembly.
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$ 85.96
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1-2 weeks delivery time SHURflo impeller replacement kit for the Macerator Pump. The kit includes one impeller and one gasket for servicing the pump assembly. Product code SH94-571-00, EAN 752324005925.
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$ 47.70
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1-2 weeks delivery time SHURflo Waterguard inline carbon drinking water filter designed to reduce odour and chlorine and improve the taste of drinking water. Features 13 mm connections and an overall height of 280 mm. Product code SHRV-210BRB-A.
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$ 100.17
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1-2 weeks delivery time SHURflo Twist-On In-Line Water Strainers designed for installation on the suction side of fresh water pumps to prevent debris and particles from entering the pump. Available with different combinations of 12–13 mm hose barb and 1/2" threaded connections. Selected versions provide 50 µm filtration with a stainless steel mesh screen, transparent inspection bowl, EPDM gasket and a maximum operating temperature of 48°C.
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$ 30.43
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1-2 weeks delivery time SHURflo 50 micron water filter designed to protect the pump from debris and particles larger than 50 µm. Features a stainless steel filter screen, transparent bowl for visual inspection and a Buna gasket. Available with 1/2" NPT female or 3/4" NPT female inlet and outlet connections. Maximum operating temperature: 48°C. Supplied with two matching male NPT-to-hose-barb adapters.
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$ 63.12
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1-2 weeks delivery time SHURflo 182-202 0.7 L pre-pressurised accumulator tank designed to provide a more constant flow in fresh water and washdown pump systems while reducing pump cycling, pulsation and pressure spikes. Nylon construction with 13 mm NPT inlet/outlet connection, 1.4 bar / 20 PSI pre-charge and maximum pressure of 8.8 bar / 125 PSI. Dimensions: 232 × 121 × 97 mm.
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$ 129.01
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1-2 weeks delivery time SHURflo 3400-002 stainless steel accumulator tank for fresh water and washdown pump systems, designed to provide a more constant flow while reducing pump cycling, pulsation and pressure spikes. Capacity: 7.6 L, 1/2" connection, pre-charge pressure 1.4 bar / 20 PSI and maximum working pressure 6.8 bar. Diameter: 280 mm; width: 310 mm.
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$ 622.17
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1-2 weeks delivery time SHURflo 12V thermally protected, self-priming transfer pump suitable for general pumping applications, including oil transfer. Delivers a flow rate of 5.6 L/min and is available in two versions: pump only or pump pre-wired with battery terminal clamps.
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$ 249.75
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What is the purpose of a diaphragm demand water pump in a marine fresh water system?
A diaphragm demand water pump automatically supplies fresh water only when needed, maintaining consistent water pressure throughout marine water systems while reducing power consumption. Its self-priming diaphragm design, pressure switch, internal bypass, and durable valves provide reliable operation for freshwater supply, washdown, livewell, water transfer, and spraying applications on boats, recreational vehicles, and other mobile systems.
Built for dependable performance, these pumps are available in a range of flow rates and pressure ratings, making them suitable for continuous-duty operation in demanding marine and industrial environments.
How does a SHURflo 12V diaphragm fresh water pump maintain consistent water pressure during continuous operation?
A 12V diaphragm fresh water pump maintains consistent water pressure by combining an automatic-demand system, pressure switch, and self-priming diaphragm design that adjusts water flow to match changing demand. Built for reliable performance, it delivers stable output across a wide range of flow rates and pressure levels, making it suitable for freshwater supply, washdown, RV water systems, agricultural spraying, and other water pumping applications.
Its durable construction, including heavy-duty housing, corrosion-resistant materials, and efficient valve design, supports dependable long-term operation in demanding
How do different GPM ratings, such as 3.5 GPM, influence the performance of a 12 volt diaphragm water pump?
Different GPM ratings determine how much water a diaphragm pump can deliver each minute, allowing users to match flow capacity to the needs of freshwater, washdown, RV, livewell, water transfer, or spraying applications. Lower-flow pumps, such as 1.8 GPM models, are well suited for light-duty water systems, while 3.5 GPM, 4.0 GPM, and 5.3 GPM versions provide higher flow for more demanding applications, all while maintaining stable pressure and efficient operation.
When combined with a self-priming diaphragm design, durable valve materials, and reliable pressure control, the appropriate GPM rating helps ensure consistent performance, efficient water delivery, and long service life in marine and mobile water systems.
How does a SHURflo Pumps diaphragm pump differ from other marine water pump designs?
A SHURflo Pumps diaphragm pump differs from many other marine water pump designs by using a flexible diaphragm and check valves to provide smooth, self-priming operation while maintaining consistent water pressure without continuous motor operation. Its design supports reliable performance in 12VDC freshwater systems, while compatible fitting options simplify integration into a wide range of onboard plumbing layouts and help deliver efficient high flow operation with minimal maintenance.