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SEAFLO 21 Series Water Pressure Diaphragm Pump - 12V DC, 1.2 GPM, 35 PSI, Adjustable Pressure Switch, Self-Priming, Quiet Operation, Durable Compact Design for RV, Boat, Off-Grid Use - 4-Year Warranty

SEAFLO 21 Series Water Pressure Diaphragm Pump - 12V DC, 1.2 GPM, 35 PSI, Adjustable Pressure Switch, Self-Priming, Quiet Operation, Durable Compact Design for RV, Boat, Off-Grid Use - 4-Year Warranty

Quantity
Regular price $52.78
Regular price Sale price $52.78
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  • Risk-Free 30-Day Returns
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30-Day Hassle-Free Returns

Not satisfied? Return your order within 30 days for a full refund or exchange — simple and easy.

✔ Easy return process

✔ Fast refunds

✔ No hidden conditions

Fast U.S. Shipping

We ship within the United States only — no international delays.

✔ Processing time: 1–2 business days

✔ Delivery time: 3–7 business days

✔ Real-time tracking available

👉 Track your order anytime from the header via Track Order

About This

  • [ SPECIFICATIONS ]: Model: SFDP1-012-035-21 | Voltage: 12V DC | Open Flow: 1.2 GPM (4.5 LPM) | Shut-Off Pressure: 35 PSI (2.4 BAR) | Current Draw: 4.0A | Self-Priming: Up to 4 ft (1.2 m) | Ports: 3/8" Hose Barb | Max Temperature: 140°F (60°C) | Leads: 18 AWG, 13" (33 cm) | Duty Cycle: Intermittent | Ignition Protected | Certifications: RoHS SGS ISO | Warranty: 4 Years
  • [ 4 YEAR WARRANTY ]: Backed by SEAFLO’s industry-leading 4-Year Limited Warranty, this compact diaphragm pump is built for long-term reliability in RV, marine, and off-grid freshwater systems. Designed for continuous real-world use, it provides dependable operation and peace of mind wherever consistent water delivery is essential for comfort and functionality.
  • [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 North America
  • [ ULTRA LOW AMP DRAW EFFICIENCY ]: Consuming only 4.0 amps, this pump is ideal for battery-powered systems, solar installations, vans, and small boats where power conservation is critical. It delivers dependable water flow for a single sink or fixture without draining your battery bank, making it a superior choice for energy-conscious off-grid users.
  • [ SUPER QUIET OPERATION ]: Engineered for minimal noise, the pump runs no louder than a typical room fan. Rubber isolation feet reduce vibration transfer to surrounding surfaces, creating a comfortable environment in sleeping areas, cabins, and enclosed RV spaces where loud pumps can be disruptive.
  • [ COMPACT SINGLE FIXTURE DESIGN ]: Optimized for one sink or light-duty use, this small footprint pump fits tight installations where larger pumps cannot. Perfect for van conversions, small campers, boats, kiosks, or auxiliary water systems, it provides reliable performance without unnecessary size or weight.
  • [ ON DEMAND PRESSURE SWITCH ]: The built-in automatic pressure switch starts the pump when a faucet opens and stops it when closed, eliminating the need for an accumulator tank. This ensures convenient operation, reduced water waste, and consistent pressure for everyday use.
  • [ ADJUSTABLE PRESSURE SETTING ]: Fine-tune the pump’s shut-off pressure to match your plumbing system requirements. This flexibility helps protect delicate fixtures, reduce cycling, and optimize performance across a wide range of applications from marine galleys to portable water systems.
  • [ SELF PRIMING DRY RUN SAFE ]: Self-primes up to 4 feet for flexible installation above or below the water tank. The pump can run dry without damage during intermittent use, while built-in thermal protection prevents overheating, extending service life in demanding conditions.
  • [ DURABLE IGNITION PROTECTED BUILD ]: Constructed with a Santoprene diaphragm, corrosion-resistant materials, and ignition protection for marine environments, this pump meets or exceeds RoHS, SGS, and ISO standards. The industry-standard mounting pattern allows easy replacement of similar small pumps.

Overview

  • Brand : SEAFLO
  • Color : Black
  • Material : Polypropylene (PP)
  • Style : 1.2 GPM - 35 PSI
  • Product Dimensions : 6.65"L x 3.94"W x 2.44"H
  • Power Source : 12V DC (2-Pin Wire not Houseplug)
  • Item Weight : 1.3 pounds
  • Maximum Flow Rate : 1.2 gpm
  • Maximum Lifting Height : 4 feet
  • Voltage : 12 volts_of_direct_current
View full details
Is Hard Water or Contaminated WaterDamaging Your Home?
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Protect Your Home Appliances
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Prevent Costly Hard Water Damage
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Reduce Limescale Buildup
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Clean Water, Whole Home
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Protect Your Home Appliances
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Softer Skin & Healthier Hair
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Pure, Better-Tasting Drinking Water
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Prevent Costly Hard Water Damage
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Reduce Limescale Buildup
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Clean Water, Whole Home
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FAQ

Is installation difficult?
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No. Our systems are designed for easy DIY installation and most homeowners can install them without professional tools. If you need help, our support team is always available.
Do I need a plumber to install the system?
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No plumber is required. The system connects directly to your existing plumbing with simple fittings.
How does this system improve water quality?
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Our filtration system helps reduce common impurities and minerals that cause hard water problems, improving the taste and clarity of your water.
Will this help protect my appliances?
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Yes. Hard water minerals can build up inside appliances. Our system helps reduce scale buildup, helping extend the life of washing machines, dishwashers, and water heaters.
How often do filters need to be replaced?
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Most filters only need replacement every 6–12 months, depending on usage and local water conditions.
Will this improve my skin and hair?
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Many customers notice softer skin and smoother hair after switching to filtered or softened water.
What if I'm not satisfied with the system?
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If you're not completely satisfied, you can return your product within 30 days for a full refund.
Easy to install — no plumber required. Our experts are here if you need help.
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