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Maintaining consistent water pressure on your boat is crucial for comfort and convenience, whether for showering, washing dishes, or operating onboard systems. A reliable water pressure pump ensures you have the water flow you need, preventing frustrating dips in pressure. Investing in the right pump can significantly enhance your boating experience.
【Worry-Free Off-Grid Travel】Engineered for RVs, boats, and other off-grid applications, it features reliable dual safeguards: 158°F (75°C) overheating protection and a rugged construction. Enjoy your journey with complete peace of mind.
【Noise Reduction Upgrade】Featuring vortex noise reduction technology and a rubber vibration-damping base, it operates at a low noise level of 40 dB, reducing sound by approximately 70% compared to traditional metal pump housings.
【Reliable Performance】With a powerful 4.0 GPM flow, 10 ft self-prime, and 100 ft head pressure, this pump delivers strong, steady water anywhere in your RV.
【Adjustable Pressure, Reliable Flow】Preset at the ideal 45 PSI, with a wide adjustment range of 30–80 PSI, you can now customize your water experience for every need—from a gentle rinse to a powerful, refreshing shower. The smart auto start-stop...
【Complete Kit, Worry-Free Support】Includes all fittings for a straightforward replacement—no extra purchases. Backed by a 3-Year Warranty and 24/7 support for complete peace of mind.
Diaphragm Pump: 110V AC water diaphragm pump provides 4.0GPM flow capacity. Turns on and off using water pressure at 50PSI, 1.3 Max amps. AC power supply, no need to carry marine battery with you
Smart Pressure Switch: Turns on and off on demand. It’s quiet, shuts itself off when the faucets are closed and runs when the faucets are opened. It also can adjust according to your needs, adjustable pressure range is 45-70PSI
Reliable Performance: Self-Priming up to 9.8 vertical feet, lift up to 131 feet. Thermal overload protection is built into the water pump to make it safe to use. When the temperature is above 95℃/ 203℉, it will automatically disconnect the circuit to...
Multipurpose: The nemesis of low water pressure. Support continuous operation for more than 1 hour. The water transfer pump is suitable for many fields, like RV, Marine, Boat, Irrigation, Sprinkler, Faucet and so on
Your First Choice: We always pay attention to customer shopping experience. If you have any questions during use, please feel free to contact with us at the first time. We will always be here
[ BACKED BY A 4-YEAR WARRANTY ]: Covered by SEAFLO’s 4-Year Limited Warranty, this pump is built for long-term reliability and peace of mind. Designed for tough freshwater demands, it’s the perfect choice for RVs, boats, cabins, and off-grid living...
[BUILT TO NSF UL Standards FOR RV POTABLE WATER ]: Built to NSF/ANSI/CAN 61 & 372 (Potable Water Safety), NSF 24 (RV Plumbing), and UL 778 (Motor-Operated Water Pumps) Safe for drinking water and compliant with RV and marine plumbing standards across...
[ INCLUDED COMPONENTS ]: Includes the SEAFLO 33-Series Pump, 50 Mesh Inlet Strainer, (2) 1/2" Barbed Hose Fittings, Wall Plug for 115V AC Power, Mounting Hardware, and User Manual for a complete plug-and-play setup. Perfect for DIY installs in RVs, marine...
[ SELF-PRIMING AND RUN DRY CAPABLE ]: Self-primes up to 6 feet and can run dry without damage, giving you flexibility to install above water tanks and assurance during fluctuating tank levels. The run-dry safety prevents internal wear, making this pump...
[ AUTOMATIC ADJUSTABLE PRESSURE SWITCH ]: Features a smart pressure switch that activates on water demand and stops when not needed. The adjustable PSI range (17–60 PSI) lets you fine-tune performance for RVs, boats, and cabins. Enjoy hands-free...
[ ULTRA QUIET WITH VIBRATION DAMPENING ]: Built with a rubber mounting base that isolates vibration and sound, this pump operates at a noise level similar to a standard fan. It's the best choice for low-noise zones like boat cabins, RV sleeping quarters...
[ EASY WALL PLUG-IN FOR INSTANT USE ]: Pre-installed with a standard 115V wall plug, the SEAFLO 33-Series is easy to install with no wiring experience needed. Just plug it into a power outlet and connect the plumbing. Ideal for cabins, small homes, boats...
[ #1 TRUSTED OEM PUMP BRAND BY THE RV INDUSTRY ]: SEAFLO is the top OEM pump brand in the U.S. RV and marine industry, used by manufacturers like Forest River, Thor, Winnebago, Grand Design, Brinkley RV, and Rev Group. The 33-Series is factory-installed...
[ HIGH-PERFORMANCE 3-CHAMBER DESIGN ]: The advanced 3-chamber diaphragm design delivers smooth and consistent water flow up to 3.0 GPM, making it ideal for moderate-pressure water system applications.
[ CAPABLE OF SUPPLYING UP TO 4 FIXTURES ]: This versatile pump provides enough water flow and pressure to operate up to 4 fixtures simultaneously, ensuring consistent performance in RVs, boats, or water systems.
[ SELF-PRIMING AND RUN DRY CAPABILITY ]: Capable of self-priming up to 6 feet (1.8 meters) with a head capability of 6 feet, this pump ensures flexibility in installation and dependable suction power. It can also run dry without damage
[ AUTOMATIC PRESSURE SWITCH ]: The built-in pressure switch allows the pump to start and stop automatically when the tap or fixture is opened or closed, providing on-demand water supply with ease.
[ QUIET AND VIBRATION-FREE OPERATION ]: Equipped with a rubber mounting base to minimize noise and vibrations, the pump ensures smooth, quiet operation for marine and RV environments.
[ DURABLE AND THERMAL OVERLOAD PROTECTED ]: Constructed with EPDM valves and a Santoprene diaphragm, the pump offers high durability, while the thermal overload protection safeguards against overheating.
[ BACKED BY A 4-YEAR WARRANTY ]: SEAFLO’s 4-Year Limited Warranty guarantees long-lasting, reliable performance, providing peace of mind for your water system needs.
[ 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.
High-Performance Washdown Pump Kit: Equipped with a 12V pump delivering 7.5 gallons per minute (GPM) flow rate and 80 PSI pressure, the kit includes a 25-foot UV-resistant hose, quick-connect trigger nozzle, 1/2'' NPT connectors, and a seawater filter to...
Exceptional Performance and Reliable Design: Offers 6 feet of vertical suction lift and 80 PSI shut-off pressure, perfect for freshwater and saltwater cleaning tasks. Features an adjustable pressure switch and thermal overload protection to prevent...
Quiet Operation and Durable Construction: Engineered with a 5-chamber diaphragm design and dual-bearing motor for low noise and vibration. The ABS-engineered plastic body, waterproof motor cover, and sealed pressure switch ensure dependable performance in...
Complete Accessories for Easy Installation: Comes with a high-efficiency pump, UV-protected coiled hose, quick-connect fittings, a high-pressure spray nozzle, and a universal filter. Simple to set up and operate, making it ideal for outdoor cleaning...
Versatile Applications: Designed for intermittent use, this 12V pump is suitable for cleaning boats, RVs, decks, fish tanks, and gardens. Perfect for washing anchor chains, beacon stations, and leisure decks, offering a comprehensive solution for a...
Please Note: The water pump is equipped with a built-in thermal protection system. It will automatically shut down when the body temperature exceeds 52°C (125.6°F) and can be restarted once it cools down. In summer or high-temperature indoor...
[ SPECIFICATIONS ] : Model: SFWSKA1-033-045-002 | Voltage: 115V | Open Flow: 3.3 GPM (12.5 LPM) | Tank Volume: 0.2-Gallon (23.5 oz / 0.75L) | Max Draw: 1.0A | Pressure On: 35 PSI (2.4 BAR) | Pressure Off: 45 PSI (3.1 BAR) | Inlet/Outlet Size: 1/2" MNPT
[ REDUCES CYCLING WITH ACCUMULATOR TANK ] : The 0.2-gallon accumulator tank reduces pump cycling by maintaining pressurized water, ensuring a consistent flow, quieter operation, and extending the pump’s lifespan.
[ SELF-PRIMING AND RUN-DRY CAPABLE ] : With self-priming capabilities up to 6 feet (1.8m), this pump supports flexible installation. It is also run-dry safe, preventing damage when the water supply is low.
[ DURABLE CONSTRUCTION FOR LONGEVITY ] : Built with corrosion-resistant EPDM valves and a Santoprene diaphragm, this system is engineered for long-lasting performance in marine, RV, home, and off-grid environments.
[ EASY TO INSTALL AND VERSATILE ] : Pre-assembled and designed for both horizontal and vertical mounting, this system simplifies installation in new or existing water pressure systems, saving time and effort.
[ ULTRA-QUIET OPERATION ] : Equipped with a heavy-duty, corrosion-resistant motor, this pump operates smoothly and quietly, reducing noise disturbance in homes, RVs, boats, and off-grid setups.
[ PERFECT FOR HOME WATER SYSTEMS ] : With a 115V power supply, this system is ideal for residential applications, making it a great choice for home water pressure systems, cabins, and tiny homes.
[ 4-YEAR WARRANTY ] : Backed by SEAFLO’s industry-leading 4-Year Warranty, this water pump system provides long-term reliability and peace of mind for all your water pressure needs.
[ SPECIFICATIONS ] Model: SFWSK1-030-045-002 | Voltage: 12V DC | Open Flow: 3.0 GPM (11.3 LPM) | Tank Volume: 0.2 Gallon (0.75 L) | Pressure Off: 45 PSI (3.1 BAR) | Pressure On: 35 PSI (2.4 BAR) | Priming Capability: Self-priming up to 6 feet (1.8 m...
[ REDUCES CYCLING WITH ACCUMULATOR TANK ] The 0.2-gallon accumulator tank minimizes pump cycling, ensuring steady water pressure, quieter operation, and longer pump life by reducing wear and tear on internal components.
[ POWERFUL PERFORMANCE FOR MULTIPLE FIXTURES ] With a 3.0 GPM flow rate and 45 PSI shut-off pressure, this pump is capable of simultaneously supplying water to up to three fixtures, making it perfect for boats, RVs, cabins, and tiny homes.
[ DURABLE CONSTRUCTION FOR LONGEVITY ] Built with EPDM valves and a Santoprene diaphragm, this system withstands harsh conditions, providing corrosion resistance and consistent performance in marine, RV, and off-grid environments.
[ EASY INSTALLATION & VERSATILE MOUNTING ] The system comes pre-assembled and is ready for installation, with horizontal or vertical mounting options for effortless setup in new or existing water systems.
[ ULTRA-QUIET OPERATION ] Engineered for silent performance, the heavy-duty corrosion-resistant motor and precision design reduce noise, creating a smooth and quiet water pressure experience.
[ SAFE FOR DRINKING WATER APPLICATIONS ] Constructed with materials that meet potable water safety standards, this system is ideal for drinking water systems in RVs, boats, tiny homes, and off-grid setups.
[ 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...
[ 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.
[ 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
[ 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.
[ 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.
[ 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.
[ COMPATIBLE WITH FRESHWATER AND SALTWATER ]: Engineered for both freshwater and saltwater cleaning tasks, ensuring reliable operation across diverse environments.
[ INDUSTRY-LEADING 4-YEAR WARRANTY ]: Backed by SEAFLO’s trusted warranty, guaranteeing durability and long-term performance.
Pump Specifications: 12V DC water pump provides 3.5 gallons per minute water flow, the pressure switch is set to 45PSI, Self-Priming up to 9.8 vertical feet, lift up to 98 feet. 6.0 Max amps
Automatic Pressure Switch: Equipped with on demand pressure switch for high flow demand, reject rapid cycling or stop working. When the faucet is opened, the pressure switch is turned on, which makes the operation more convenient. It also can adjusted...
Reliable Performance: Thermal overload protection is built into the water pump to make it safe to use, also can run dry without damage. When the temperature is above 70℃/ 158℉, it will automatically stop the circuit to protect the motor
Widely Applications: The water pressure pump is easy to install and carry. It can be widely used in many fields, like RV, Yacht, Camper, Food Truck, etc. Which can provide a more convenient lifestyle to you
Your First Choice: We always pay attention to customer shopping experience. If you have any doubts, you can always talk to us through the order form. We will always be here
Powerful Cleaning Performance This 12V washdown pump delivers up to 80 PSI shut-off pressure and a steady flow of 7.5 GPM (28.4 L/min). The five-chamber diaphragm design enables 6 ft vertical self-priming height – no manual priming needed. The...
Durable & Corrosion-Resistant for Harsh Environments The motor features dual ball bearings and rubber mounts to reduce vibration and noise. The corrosion‑resistant ABS housing, sealed pressure switch, and waterproof motor cover withstand saltwater...
Quiet Operation for Residential & Outdoor Use Engineered with a five‑chamber diaphragm and dual‑bearing motor for low noise and minimal vibration. Whether cleaning your boat at the dock or washing your RV at a campsite, this pump operates quietly...
Complete Kit – Easy Installation The kit includes: high‑efficiency pump, 25 ft UV‑resistant hose, quick‑connect trigger nozzle, inlet strainer, ½" NPT fittings, and a high‑pressure nozzle. Everything you need for a quick setup – no extra...
Versatile Applications & Customer Care Perfect for freshwater or saltwater use – clean decks, anchor chains, fishing gear, RV exteriors, campers, and outdoor equipment. We offer a 3‑year warranty and 24‑hour response support. If you experience any...
80 PSI & 7.5 GPM washdown pump. Self-priming, auto start/stop, saltwater-safe, thermal protection, full kit, 3-year warranty.
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Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Boat Water Pressure Pumps
Pump Type
Boat water pumps generally fall into two main categories: diaphragm and impeller pumps. Diaphragm pumps are self-priming and can run dry for short periods, making them a popular choice for fresh water systems. Impeller pumps are simpler and often more affordable but are not designed to run dry and may require more frequent maintenance.
Flow Rate and Pressure
Consider the typical water usage on your boat. A higher flow rate (measured in gallons per minute, GPM) is needed for multiple outlets running simultaneously. Pressure (measured in PSI) determines how strong the water stream will be. Match these specifications to your boat's plumbing and your personal needs to avoid under- or over-powering your system.
Durability and Maintenance
Boats are exposed to harsh marine environments, so look for pumps constructed from corrosion-resistant materials like stainless steel or robust plastics. Consider the ease of maintenance and availability of replacement parts. Some pumps offer features like built-in strainers or thermal overload protection, which can extend their lifespan and reduce upkeep.
Frequently Asked Questions
How do I know what GPM I need?
Consider the number of water outlets you expect to use simultaneously. For a small boat with one or two outlets, a lower GPM might suffice. For larger vessels with multiple bathrooms or galleys, a higher GPM is recommended to ensure adequate flow.
Can I use a pump designed for RVs on my boat?
While some overlap exists, it's generally best to use pumps specifically designed for marine applications. Marine pumps are built to withstand saltwater, vibration, and the specific electrical systems found on boats, offering greater durability and safety.
What is the difference between a self-priming pump and one that isn't?
A self-priming pump can draw water from a lower level than the pump itself, even after the pump has been running dry. Non-self-priming pumps require the pump head to be filled with water before they can operate effectively.
How often should a boat water pump be serviced?
Service intervals vary depending on the pump type, usage, and water quality. Diaphragm pumps may need diaphragm replacements periodically, while impeller pumps might require impeller checks and replacements more frequently. Regular inspection for leaks or unusual noise is advisable.
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