

Hero image 0 of All New 33 Series SeaFlo Marine Water Pump 12 V DC 45 PSI 3.0 GPM 23.5 oz 125 psi Accumulator System, 0 of 11
All New 33 Series SeaFlo Marine Water Pump 12 V DC 45 PSI 3.0 GPM 23.5 oz 125 psi Accumulator System
Key item features
- Powerful Performance: This 12V DC marine water pump delivers a robust 3.0 GPM (11.3 LPM) open flow rate with a shut-off pressure of 45 PSI (3.1 BAR), ensuring efficient water delivery.
- Integrated System: The product includes a 3-chamber diaphragm pump, a strainer, and a pre-pressurized 0.2 Gallon (0.75 L) accumulator tank, simplifying installation.
- Automatic Operation: Featuring a built-in pressure switch, the pump automatically starts and stops when a faucet is opened or closed, providing convenient demand water system functionality.
- Reliable Design: The pump is self-priming up to 6 feet (1.8 m) suction lift and can run dry without sustaining damage, enhancing its durability and reliability.
- Durable Construction: Constructed with EPDM valves and a Santoprene diaphragm, the pump is designed for longevity and consistent performance in marine environments.
- Easy Maintenance: Engineered for straightforward installation, servicing, and winterization, making it user-friendly for both professional and amateur installers.
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Specs
- Gallons per minute3 GPM
- Fuel typeElectric
- Power typeCorded Electric
- BrandSEAFLO
- Volts12 VDC
- Assembled product height5.75 in
Current price is USD$109.99
Price when purchased online
- Free shipping
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Columbus, 43215
Arrives by Wed, Feb 11
|Sold and shipped by SEAFLO MARINE & RV NA
4.606060606060606 stars out of 5, based on 33 seller reviews(4.6)33 seller reviews
Free 30-day returns
Compare with similar items
| Product | Viewing this itemAll New 33 Series SeaFlo Marine Water Pump 12 V DC 45 PSI 3.0 GPM 23.5 oz 125 psi Accumulator System ![]() $109.99 current price $109.9925 out of 5 Stars. 2 reviews | SEAFLO 33 Series Water Pump and Accumulator Tank System - 115V, 3.3 GPM, 45 PSI, 0.2-Gallon Tank | Reduces Cycling | For Marine, RV, Off-Grid, and Home Use | 4-Year Warranty ![]() $139.99 current price $139.99 | SEAFLO 24V 4.5 GPM 40 PSI 41 Series Diaphragm Pumps ![]() $124.99 current price $124.9914 out of 5 Stars. 1 reviews | SEAFLO 31 Series DC Diaphragm Pump 24V 1.5 GPM 160PSI ![]() $120.00 current price $120.00 | VEVOR 12V Pressure Water Pump, Self Priming Sprayer Pump with 3 GPM, 55 PSI Diaphragm Pump ![]() $60.99 current price $60.99 | Heavy Duty 12V RV Marine Water Pump 5.5 GPM 70 PSI Diaphragm Pump for Caravan ![]() $100.99 current price $100.99 |
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| Gallons per minute | 3 GPMAll New 33 Series SeaFlo Marine Water Pump 12 V DC 45 PSI 3.0 GPM 23.5 oz 125 psi Accumulator System | 3.3 GPMSEAFLO 33 Series Water Pump and Accumulator Tank System - 115V, 3.3 GPM, 45 PSI, 0.2-Gallon Tank | Reduces Cycling | For Marine, RV, Off-Grid, and Home Use | 4-Year Warranty | 4.5 GPMSEAFLO 24V 4.5 GPM 40 PSI 41 Series Diaphragm Pumps | 1.5 GPMSEAFLO 31 Series DC Diaphragm Pump 24V 1.5 GPM 160PSI | 3 GPMVEVOR 12V Pressure Water Pump, Self Priming Sprayer Pump with 3 GPM, 55 PSI Diaphragm Pump | 5.5 GPMHeavy Duty 12V RV Marine Water Pump 5.5 GPM 70 PSI Diaphragm Pump for Caravan |
|---|---|---|---|---|---|---|
| Power type | Corded ElectricAll New 33 Series SeaFlo Marine Water Pump 12 V DC 45 PSI 3.0 GPM 23.5 oz 125 psi Accumulator System | Corded ElectricSEAFLO 33 Series Water Pump and Accumulator Tank System - 115V, 3.3 GPM, 45 PSI, 0.2-Gallon Tank | Reduces Cycling | For Marine, RV, Off-Grid, and Home Use | 4-Year Warranty | Corded ElectricSEAFLO 24V 4.5 GPM 40 PSI 41 Series Diaphragm Pumps | Corded ElectricSEAFLO 31 Series DC Diaphragm Pump 24V 1.5 GPM 160PSI | BatteryVEVOR 12V Pressure Water Pump, Self Priming Sprayer Pump with 3 GPM, 55 PSI Diaphragm Pump | BatteryHeavy Duty 12V RV Marine Water Pump 5.5 GPM 70 PSI Diaphragm Pump for Caravan |
| Volts | 12 VDCAll New 33 Series SeaFlo Marine Water Pump 12 V DC 45 PSI 3.0 GPM 23.5 oz 125 psi Accumulator System | 115 VSEAFLO 33 Series Water Pump and Accumulator Tank System - 115V, 3.3 GPM, 45 PSI, 0.2-Gallon Tank | Reduces Cycling | For Marine, RV, Off-Grid, and Home Use | 4-Year Warranty | 24 VSEAFLO 24V 4.5 GPM 40 PSI 41 Series Diaphragm Pumps | 24 VSEAFLO 31 Series DC Diaphragm Pump 24V 1.5 GPM 160PSI | 12 VVEVOR 12V Pressure Water Pump, Self Priming Sprayer Pump with 3 GPM, 55 PSI Diaphragm Pump | 12 VHeavy Duty 12V RV Marine Water Pump 5.5 GPM 70 PSI Diaphragm Pump for Caravan |
| Assembled product height | 5.75 inAll New 33 Series SeaFlo Marine Water Pump 12 V DC 45 PSI 3.0 GPM 23.5 oz 125 psi Accumulator System | 14.57 inSEAFLO 33 Series Water Pump and Accumulator Tank System - 115V, 3.3 GPM, 45 PSI, 0.2-Gallon Tank | Reduces Cycling | For Marine, RV, Off-Grid, and Home Use | 4-Year Warranty | 4.33 inSEAFLO 24V 4.5 GPM 40 PSI 41 Series Diaphragm Pumps | 4.5 inSEAFLO 31 Series DC Diaphragm Pump 24V 1.5 GPM 160PSI | 5.12 inVEVOR 12V Pressure Water Pump, Self Priming Sprayer Pump with 3 GPM, 55 PSI Diaphragm Pump | -Heavy Duty 12V RV Marine Water Pump 5.5 GPM 70 PSI Diaphragm Pump for Caravan |
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About this item
Product details
SEAFLO 12V Water Pressure Diaphragm Pump 3.0 GPM 45 PSI It provides up to 3.0 gallons per minute. The 33-Series pumps are self-priming, can run dry without damage, and are performance reliable. This automatic demand water system pump has a built-in pressure switch which automatically starts and stops the pump when the faucet is opened and closed. Easy to install service and winterize. Technical Specifications Voltage: 12 VDC Inlet / Outlet: 1/2″-14 MNPT Flow Rate: 3.0 GPM Amps: 6.0 (11.0 Max. Amps) Shut-off Pressure: 45 PSI A fully assembled pressure set that simplifies the installation of water pressure systems for both the professional and amateur installer. The set consists of a 3 chamber diaphragm pump, strainer and pre-pressurized accumulator tank.
- Model: SFWSK1-030-045-002
- Voltage: 12V DC
- Open Flow Rate: 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) suction lift
- Max Draw: 11.0A
- Ports: 1/2" MNPT
- Material: EPDM valves / Santoprene diaphragm
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Gallons per minute
3 GPM
Plumbing pump type
Water Pressure Pump and Accumulator
Fuel type
Electric
Power type
Corded Electric
Warranty
Warranty information
SEAFLO Marine & RV North America, LLC Product Warranty warrants its products to be free from material and workmanship defects under normal use and service for a period of four (4) years from the date of purchase, not to exceed (4) four years in any event. The limited warranty will not apply to pumps that were improperly installed, misapplied, or are incompatible with components not manufactured by SEAFLO. An original receipt of purchase must be presented. Pump failure due to foreign debris is not covered under the terms of this limited warranty. SEAFLO Marine & RV North America, LLC will not warrant any pump that is physically damaged, or altered outside of the SEAFLO factory. SEAFLO Marine & RV North America LLC only warrants products purchased from SEAFLO Marine & RV North America LLC, or one of SEAFLO Marine & RV North America’s Authorized Dealers. Returns are to be shipped with charges pre-paid. Package all returns carefully. SEAFLO Marine & RV North America LLC, will not be responsible for freight damage incurred during shipping to our service center. SEAFLO Marine & RV North America’s obligation under this warranty policy is limited to the repair or replacement of the pump. Pumps found not defective (under the terms of this limited warranty) are subject to charges to be paid by the returnee for the testing and packaging of units that are tested in good working order. Warranty returns will be shipped on a freight allowed basis. SEAFLO Marine & RV North America, reserves the right to choose the method of transportation. SEAFLO Marine & RV North America, LLC is not responsible nor will it reimburse for labor necessary to remove and re-install a pump, if found defective. SEAFLO Marine & RV North America LLC, reserves the right to update specifications, change prices, or make substitutions without notice.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
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Showing 1-2 of 2 reviews
Sep 23, 2025
anonymous
5 out of 5 stars review
Verified Purchase
Super quiet pump and accumulator. The mounting board made installation a breeze. Just make sure you have enough space to mount the panel and you are good.
Helpful?202MZFRB87UL748687365
Apr 9, 2025
STEVE
5 out of 5 stars review
Verified Purchase
Spend less, works as good.
Perfect replacement for a more expensive unit. Easy to install.
Helpful?202MZFRB87UL748687365






