Seaflo Pressure Switches of 2025
Best Choice1
SEAFLOSEAFLO 55-Series Industrial Water Pressure Pump w/Power Plug for Wall Outlet - 115VAC, 5.0 GPM, 60 PSI | Self-Priming, Heavy Duty, Quiet Operation | Ideal for RV, Boat, Off-Grid, and Industrial Use
Main highlights- Versatile Applications for RVs, Boats, and Industrial Use: The SEAFLO 55-Series Diaphragm Pump is a versatile solution for various water system applications, including RVs, boats, yachts, off-grid cabins, and industrial tasks. Its high flow rate, robust suction power, and durable construction make it suitable for both freshwater and saltwater environments. Whether you’re using it as a washdown pump, potable water system pump, or for other liquid transfer tasks, the SEAFLO 55-Series delivers consistent and reliable performance across a wide range of applications.
- Specifications: Model Number: SFDPA1-050-060-55 Voltage: 115VAC Open Flow: 5.0 GPM (20.8 LPM) Max Draw: 17A Shut-off Pressure: 60 PSI (4.2 BAR) Priming Capabilities: 9 FT (2.7M) suction lift Max Recommended Temperature: 140°F (60°C) Material: EPDM (Valves) / Santoprene (Diaphragm) Ports: 1/2"-14 MNPT Threaded Noise Level: 65 DB Fixtures Quantity: Up to 6 Leads: 16 AWG, 9" (22.8 cm) long Leads Duty Cycle: Intermittent Warranty: 4-Year Limited Warranty
- Self-Priming with Robust Suction Power: Enjoy the convenience of self-priming with the SEAFLO 55-Series pump, which can achieve a suction lift of up to 9 feet. This robust suction capability ensures that the pump can be mounted remotely from the water source, providing flexibility in installation options. Additionally, the pump is capable of running dry without damage, offering peace of mind in case of accidental dry operation. Whether you're drawing water from a tank, well, or other sources, this pump provides reliable performance every time.
- Quiet and Efficient Operation: Designed for quiet operation, the SEAFLO 55-Series pump operates at a noise level comparable to that of a ceiling fan. This makes it an excellent choice for environments where noise reduction is essential, such as RVs, boats, and off-grid cabins. The pump’s semi-rigid rubber base minimizes vibrations, further reducing noise and preventing disturbances. Enjoy a peaceful and comfortable experience while the pump delivers high-power water flow without the constant hum of a noisy motor, ensuring a quiet and efficient operation.
- Included Components: (1) SEAFLO 55-Series Diaphragm Pump (1) Set of Installation Instructions (2) 1/2" Barbed Hose Adaptors (1) 50 Mesh Inlet Strainer
- Heavy-Duty Pressure Switch with Built-In Bypass: The SEAFLO 55-Series pump features a heavy-duty pressure switch that offers precise pressure control and stable performance. The built-in bypass function enhances the pump’s efficiency by reducing rapid cycling and allowing water to flow back from the outlet side to the inlet. This not only extends the life of the pump but also ensures smooth operation of your water system. The adjustable pressure setting allows you to customize the pressure according to your specific needs, making it a versatile and user-friendly choice for various applications.
- Durable and Corrosion-Resistant Construction: Built to withstand harsh conditions, the SEAFLO 55-Series pump features materials like Santoprene for the diaphragm and EPDM for the valves, known for their abrasion and corrosion resistance. This ensures that the pump can handle both saltwater and freshwater applications without degrading over time. The pump’s robust construction guarantees long-lasting reliability, even in the most demanding conditions, making it an ideal choice for both marine and industrial environments.
- Automatic On/Off Operation with Smart Pressure Switch: The SEAFLO 55-Series pump is designed for automatic operation, starting and stopping the pump when you open or close a faucet. This intelligent design offers an experience similar to using water at home, with water available whenever you need it, without manual intervention. The smart pressure switch ensures sufficient pressure and flow, making it easy to carry out daily activities such as washing, bathing, or cleaning. The adjustable pressure setting allows you to customize the pressure to suit your specific needs, providing convenience and flexibility.
9.9Exceptional
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Value for Money2
SEAFLOSEAFLO 55-Series Diaphragm Pump - 12V DC, 5.5 GPM, 60 PSI with Heavy Duty Pressure Switch | Self-Priming, Quiet Operation, 4-Year Warranty | Ideal for RV, Marine, and Off-Grid Water System
9.1 Easy installation8.2 Vacuum strength8.0 Noise levelWhy we love it
Easy to install
Maintenance free
4 year warranty
9.8Exceptional
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3
SEAFLOSEAFLO Water Diaphragm Self Priming Pump 3.0 Gallons/min (11.3 Lpm) 45 PSI New Rv/Marine 12 Volt Dc / 12 V Demand Fresh
9.3 Easy installation8.9 worth the money8.9 Vacuum strengthWhy we love it
Runs quietly and efficiently.
Self-priming up to 6 feet.
Durable and reliable under various conditions.
9.6Exceptional
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4
SEAFLOSEAFLO 33-Series Water Pressure Pump - 115V AC, 3.3 GPM, 45 PSI, Self Priming, Smart Pressure Switch, UL & CSA Certified, for RV, Caravan, Off-Grid, Marine, and Industrial Use
8.9 Easy installation8.7 Simple to use8.4 Vacuum strengthWhy we love it
Certified for safety and reliability.
Adjustable pressure switch for versatile use.
Easy installation with standard wall plug.
9.5Excellent
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5
SEAFLOSEAFLO 33 Series DC Diaphragm Pump – 12V, 3.0 GPM, 45 PSI, Self-Priming, On-Demand with Built-In Pressure Switch, Blue Head Version | Ideal for Marine, RV, and Water System Applications
9.5 Easy installation8.7 Noise level8.2 worth the moneyWhy we love it
Long warranty: 4 yrs
Powerful: 12V, 3 GPM, 45PSI
Safe: Self priming, Silent, No Dry run, Thermal overload, Ignition protected, CE approved
9.2Excellent
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6
SEAFLOSEAFLO 33-Series Water Pressure Pump - 115V AC, 3.3 GPM, 45 PSI, Self Priming, Smart Pressure Switch, UL & CSA Certified, for RV, Caravan, Off-Grid, Marine, and Industrial Use
9.5 Easy installation8.9 Vacuum strength8.4 worth the moneyWhy we love it
Long lasting: 4 year warranty
Powerful: 3.3 GPM, 45 psi
Easy setup: plug and play, includes adapters
9.1Excellent
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7
SEAFLOSEAFLO 43-Series Water Pressure Diaphragm Pump - 12V DC, 3.0 GPM, 55 PSI with Adjustable Pressure Switch, Self-Priming, UL & CSA Certified, Quick Attach - For RV, Boat, and Off-Grid Applications
Main highlights- VERSATILE APPLICATIONS – Perfect for RVs, boats, and off-grid water systems, this compact and efficient pump meets diverse water needs, from providing water on remote sites to pressurizing cabin fixtures and marine systems.
- SPECIFICATIONS – Model: SFDP1-030-055-43 | Voltage: 12V DC | Flow Rate: 3.0 GPM | Max Pressure: 55 PSI | Self-Priming | Diaphragm Material: Santoprene | Inlet/Outlet Ports: 3/4” Quick Attach | Max Temp: 140°F
- SELF-PRIMING AND THERMALLY PROTECTED – Self-priming up to 6 feet, allowing for flexible installation options above your water tank; built-in thermal protection safeguards the pump from overheating for extended durability.
- QUIET AND EFFICIENT OPERATION – Engineered for minimal noise with vibration-absorbing mounts and a robust diaphragm design, providing consistent, quiet water flow for a comfortable experience in your RV, boat, or off-grid setup. Set up is easy with the pump’s 3/4” Quick Attach inlet and outlet.
- INCLUDED COMPONENTS: 1x 52S02 Filter, 2x 41F001 3/4” QA x 1/2” Barb Elbow Pump Fittings, Installation Instructions, Warranty Information, Pum
- HIGH PERFORMANCE: This 12V diaphragm pump offers a powerful 3.0 GPM of water flow and 55 PSI shut-off pressure, delivering reliable and consistent water pressure for all your on-demand applications in marine, RV, agriculture, and off-grid environments. This pump also includes an internal bypass variable flow to reduce cycling.
- DURABLE & SAFE MATERIALS: Built with high-quality EPDM valves and a Santoprene diaphragm, this pump meets RoHS, SGS, and ISO standards, ensuring that it is environmentally safe and durable under various operating conditions.
- AUTOMATIC ON-DEMAND OPERATION: Equipped with a built-in pressure switch, the SEAFLO 42-Series pump automatically starts and stops based on water demand, providing hands-free operation and conserving energy and water.
8.9Very Good
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8
SEAFLOSEAFLO 55-Series Diaphragm Pump - 12V DC, 5.5 GPM, 60 PSI with Heavy Duty Pressure Switch | Self-Priming, Quiet Operation, 4-Year Warranty | Ideal for RV, Marine, and Off-Grid Water Systems
Main highlights- Versatile Applications for RVs, Boats, and More: The SEAFLO 55-Series Diaphragm Pump is a versatile solution for various water system applications, including RVs, boats, yachts, water purification systems, and other liquid transfer tasks. Its high flow rate, robust suction power, and durable construction make it suitable for both freshwater and saltwater environments. Whether you're using it as a washdown pump, potable water system pump, or shower drain pump, the SEAFLO 55-Series delivers consistent and reliable performance across a wide range of applications.
- Specifications: Model Number: SFDP1-055-060-55 Voltage: 12V DC Open Flow: 5.5 GPM (20.8 LPM) Max Draw: 17A Shut-off Pressure: 60 PSI (4.2 BAR) Priming Capabilities: 9 FT (2.7M) suction lift Max Recommended Temperature: 140°F (60°C) Material: EPDM (Valves) / Santoprene (Diaphragm) Ports: 1/2"-14 MNPT Threaded Noise Level: 65 DB Fixtures Quantity: Up to 6 Leads: 16 AWG, 9" (22.8 cm) long Leads Duty Cycle: Intermittent Warranty: 4-Year Limited Warranty
- Self-Priming with Robust Suction Power: Enjoy the convenience of self-priming with the SEAFLO 55-Series pump, which can achieve a suction lift of up to 9 feet. This powerful suction capability ensures that the pump can be mounted remotely from the water source, providing flexibility in installation options. The pump is also capable of running dry without damage, offering peace of mind in case of accidental dry operation. Whether you're drawing water from a tank, well, or other sources, this pump provides reliable performance every time.
- Quiet and Efficient Operation: Designed for quiet operation, the SEAFLO 55-Series pump runs at a noise level comparable to that of a ceiling fan. This makes it an excellent choice for environments where noise reduction is essential, such as RVs, boats, and off-grid cabins. The pump's semi-rigid rubber base minimizes vibrations, further reducing noise and preventing disturbances. Enjoy a peaceful and comfortable experience while the pump delivers high-power water flow without the constant hum of a noisy motor.
- Included Components: (1) SEAFLO 55-Series Diaphragm Pump (1) Set of Installation Instructions (2) 1/2" Barbed Hose Adaptors (1) 50 Mesh Inlet Strainer
- High Flow Rate with 5-Chamber Diaphragm Design: The SEAFLO 55-Series Diaphragm Pump is engineered with a 5-chamber diaphragm that delivers an impressive flow rate of 5.5 gallons per minute (GPM). This high-volume output ensures that you can supply water to up to six fixtures simultaneously, making it ideal for a wide range of applications, from washing to bathing. The advanced diaphragm design reduces pump cycling, providing a smoother and more consistent water flow. Whether you're using it for your RV, boat, or water purification system, this pump delivers the power and performance you need.
- Heavy-Duty Pressure Switch with Built-In Bypass: The SEAFLO 55-Series pump is equipped with a heavy-duty pressure switch that provides precise pressure control and stable performance. The built-in bypass function further enhances the pump's efficiency by reducing rapid cycling and allowing water to flow back from the outlet side to the inlet. This feature not only extends the life of the pump but also ensures that your water system operates smoothly and without interruption. The adjustable pressure setting allows you to customize the pressure to suit your specific needs, making it a versatile and user-friendly choice.
- Durable and Corrosion-Resistant Construction: Built to withstand the harsh conditions of marine and RV environments, the SEAFLO 55-Series pump features durable materials such as Santoprene for the diaphragm and EPDM for the valves. These materials are known for their abrasion and corrosion resistance, ensuring that the pump can handle both saltwater and freshwater applications without degrading over time. The pump's robust construction ensures long-lasting reliability, even in the most demanding conditions.
- Automatic On/Off Operation with Smart Pressure Switch: The SEAFLO 55-Series pump is designed for automatic operation, starting and stopping the pump when you open or close a faucet. This intelligent design provides an experience similar to using water at home, with water available whenever you need it without any manual intervention. The smart pressure switch ensures sufficient pressure and flow, making it easy to carry out daily activities such as washing, bathing, or cleaning. The adjustable pressure setting allows you to customize the pressure to suit your specific needs, providing convenience and flexibility.
8.8Very Good
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9
SEAFLOSEAFLO 55-Series Diaphragm Pump - 12V DC, 5.5 GPM, 60 PSI with Heavy Duty Pressure Switch | Self-Priming, Quiet Operation, 4-Year Warranty | Ideal for RV, Marine, and Off-Grid Water System
Main highlights- ️ [ VERSATILE APPLICATIONS FOR RVs, BOATS, AND OFF-GRID SYSTEMS ]: The SEAFLO 55-Series pump is designed to cater to diverse applications, including washdown systems, potable water supply, shower drains, and water purification systems. Its robust performance makes it a perfect fit for RVs, boats, yachts, and off-grid cabins. With its ability to handle both freshwater and saltwater, it serves as a versatile solution for various liquid transfer needs
- ️ [ SMART PRESSURE SWITCH WITH LONG LIFETIME ]: The SEAFLO 55-Series features a reliable Smart Pressure Switch that activates the pump automatically when water is needed and stops it when the demand ceases. Built for endurance, it offers a lifetime of over 200,000 on/off cycles, ensuring consistent and long-lasting performance for various water systems. This non-adjustable switch provides optimal pressure control without manual adjustments.
- ️ [ SELF-PRIMING & RUN DRY CAPABILITY ]: This pump’s self-priming feature allows for a powerful suction lift of up to 9 feet, making it versatile for remote installations. This means the pump can be positioned above the water source, offering greater flexibility in setup without compromising performance. Additionally, the pump can run dry without damage, protecting the internal components during low-water conditions or accidental dry operation, making it a reliable solution for various water transfer tasks.
- ️ [ QUIET & EFFICIENT OPERATION WITH NOISE REDUCTION ]: Engineered for quiet operation, the SEAFLO 55-Series pump functions at a noise level comparable to a ceiling fan (65 dB). The semi-rigid rubber mounting base reduces vibrations, significantly lowering noise levels and ensuring a peaceful environment. This makes it particularly suitable for indoor use, such as in RVs or boats, where minimal noise is preferred.
- ️ [ HIGH FLOW RATE WITH 5-CHAMBER DESIGN ] : The advanced 5-chamber diaphragm ensures a high flow rate of 5.5 GPM, making it capable of supplying water to up to six fixtures at once. This design not only supports various simultaneous water uses—like showering, washing, or dishwashing—but also reduces pump cycling, delivering consistent water pressure. Whether used for marine, RV, or off-grid systems, this pump ensures dependable and continuous water flow.
- ️ [ HEAVY-DUTY PRESSURE SWITCH WITH BUILT-IN BYPASS ]: The upgraded pressure switch offers precise pressure control and stable performance by automatically activating the pump when needed and stopping it once the desired pressure is reached. The built-in bypass mechanism minimizes rapid cycling by maintaining consistent pressure, allowing water to flow back from the outlet side to the inlet if necessary. This function extends the pump’s lifespan and ensures a seamless water supply, making it particularly beneficial for systems with multiple water outlets.
- ️ [ EFFICIENT HEAT DISSIPATION & LOW STARTING PRESSURE ]: The heavy-duty pressure switch is designed with efficient heat dissipation capabilities, ensuring that the pump can run continuously without overheating. It is also engineered to work with a low starting pressure, preventing unnecessary pump cycling and reducing wear and tear on the motor.
- ️ [ DURABLE & CORROSION-RESISTANT MATERIALS ]: Built to withstand harsh marine and RV environments, the pump uses premium Santoprene for the diaphragm and EPDM for the valves. These materials offer excellent abrasion and corrosion resistance, making the pump suitable for both freshwater and saltwater applications. Its construction ensures durability and long-lasting reliability, even in high-moisture or corrosive conditions.
- Specifications: ️Model Number: SFDP1-055-060-55 ️Voltage: 12V DC ️Open Flow: 5.5 GPM (20.8 LPM) ️Shut-off Pressure: 60 PSI (4.2 BAR) ️Priming Capabilities: 9 FT (2.7 M) Suction Lift ️Max Draw: 17A ️Material: EPDM (Valves) / Santoprene (Diaphragm) ️Ports: 1/2"-14 MNPT Threaded ️Max Recommended Temperature: 140°F (60°C) ️Warranty: 4-Year Limited Warranty
- Included Components: ️SEAFLO 55-Series Diaphragm Pump ️Installation Instructions ️(2) 1/2" Barbed Hose Adaptors ️50 Mesh Inlet Strainer ️16 AWG, 9" (22.8 cm) Leads
8.7Very Good
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10
SEAFLOSEAFLO 33 Series Washdown Deck Wash Pump Kit - 12V DC, 3.0 GPM, 70 PSI, Heavy Duty Pressure Switch, for RV, Boat, Marine, Yacht, Freshwater, and Saltwater Applications | 4-Year Warranty
Main highlights- [DURABLE AND CORROSION-RESISTANT CONSTRUCTION ]: Built with EPDM valves, a Santoprene diaphragm, and ABS engineering plastics, this pump is designed to withstand harsh conditions in both freshwater and saltwater environments.
- [COMPATIBLE WITH FRESHWATER AND SALTWATER ]: Engineered for both freshwater and saltwater cleaning tasks, ensuring reliable operation across diverse environments.
- [ SPECIFICATIONS ]: Model Number: SFWP1-030-070-33 Voltage: 12V DC Open Flow: 3.0 GPM (11.3 LPM) Shut-off Pressure: 70 PSI (4.8 BAR) Priming Capability: Self-priming up to 6 feet (1.8 m) suction lift Max Draw: 18.0 A Inlet/Outlet Size: 1/2"-14 MNPT Material: EPDM valves / Santoprene diaphragm
- [ QUIET AND RELIABLE OPERATION ]: Rubber mounting feet reduce vibration and noise. Thermal overload protection automatically stops the motor during overheating and restarts once cooled for uninterrupted performance.
- [ INDUSTRY-LEADING 4-YEAR WARRANTY ]: Backed by SEAFLO’s trusted warranty, guaranteeing durability and long-term performance.
- [ HIGH-EFFICIENCY PUMP PERFORMANCE ]: Capable of delivering a powerful 3.0 GPM flow rate at 70 PSI, this pump ensures fast and effective cleaning, saving you time and effort.
- [ HEAVY-DUTY PRESSURE SWITCH ]: The built-in pressure switch automatically activates when the spray gun handle is squeezed and shuts off when released, offering precise control and protecting the pump from over-pressurization.
- [ EASY INSTALLATION AND VERSATILITY ]: Features industry-standard mounting and quick-connect fittings, making setup and maintenance simple and efficient. Suitable for a wide range of applications, from boats to RV decks.
- [ COMPLETE WASHDOWN KIT INCLUDED ]: Includes a heavy-duty pump, 25-foot UV-protected coiled hose, trigger spray nozzle, quick-connect fittings, 50 mesh inlet strainer, and two 1/2" barbed fittings for a complete cleaning solution.
8.5Good
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