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Aquatec Surface Diaphragm Pump (5513-1E11-B636)


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A heavy-duty, American-made DC surface pump ideal for remote or off-grid use. Operates on 12VDC.


Aquatec Surface Diaphragm Pump - 12VDC (5513-1E11-B636)

Aquatec's 5513 Surface Pump delivers powerful flow rates up to 5.3 gallons per minute and up to 70 psi. Its patented 5-chamber diaphragm and piston design allows for higher flows than the comparable 3-chamber ShurFlo alternative - and at a lower cost. These pumps operate exceptionally quietly and with minimal pulsations, and run directly from a DC source like a solar panel with no inverter required.

The Aquatec 5513 is commonly used either to pressurize water from an atmospheric tank, to deliver purified water to a specific point of use, or simply to increase pressure when required. They feature an integrated pressure switch feature that enables the pump to work "on demand." As water is demanded downstream, the pressure in the line drops and the built-in pressure switch automatically turns the pump on to re-pressurize the line. Once water is no longer demanded downstream, the pressure in the line builds, and when it reaches 60 psi the pressure switch automatically stops the pump.

This surface pump is designed for intermittent duty, but can be run continuously for about two hours at a time. It is also able to run dry.

Aquatec 550 Series Surface Diaphragm Pump Features

  • Capable of open flow up to 5.3 gpm and pressures up to 70 psi
  • Built-in pressure switch for automatic demand operation
  • Runs DC-direct straight from a solar panel
  • Self-priming from 13' vertical
  • Capable of running dry
  • Constructed with materials that are FDA-approved for potable water (rated to NSF 018 for drinking water)
  • Can be mounted in any position
  • Heavy duty double bearing motor
  • Field-serviceable with Aquatec repair kits
  • 1-year warranty

Aquatec 550 Series Surface Diaphragm Pump Specs

  • 9.95" L x 5" W x 4.58" H
  • 8 lbs
  • Voltage: 12VDC
  • Max flow: 5.3 gpm
  • Max head/pressure: 161' / 70 psi
  • Max priming: 13' (subtract 1' for every 1,000' of altitude)
  • Motor: 12VDC permanent magnet
  • ½" female NPT threaded ports
  • Max current: 18 amps
  • Manufacturer: Aquatec
  • Model number: 5513-1E11-B636

Why Aquatec?

Although Aquatec is a relative newcomer to the solar water pumping market, they have been leaders in related fields including water treatment, medical laser equipment heat exchange, and medical endoscope reprocessing water supply since 1976. Aquatec's manufacturing and materials sourcing is all-American and does not depend on foreign suppliers for parts. All wet parts are NSF 018 drinking water safe.

Outstanding lifespan - Aquatec's surface pump brushes have been carefully selected to maximize life. Robust motor design with front and back bearing support, unlike the front bearing and rear bushing support found in many other brands. Heavy duty Honeywell micro switch is rated to 1.5 million cycles; the switch will last much longer than other brands. Proprietary diaphragm enhancements - including coated wobblers, diaphragm support backer, and specially selected santoprene - extend pump life as well.

Easy integration - ½" female NPT threaded ports for easy use with commonly available fittings.

This product is shipped from one of our warehouses in Northern California. Orders placed after 12 p.m. will typically ship the following business day. To see an estimate of our delivery times, click here.

Returns & Replacements
Products can be returned for a refund within 30 days of receipt if unused and in original packaging. Returns are paid for by customer unless product is defective or damaged, in which case Real Goods assumes responsibility. Please use Fedex, UPS, or USPS with tracking, for returns.

Returns of solar panels, inverters or other large ticket items will incur a re-stocking fee of up to 20%. Freight shipping is non-refundable.

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