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Rule Industries RM500B24 Rule-Mate Automatic Bilge Pump 500 GPH 24V

Manufacturer

Rule Industries

<h3>Rule Industries: The Gold Standard in Marine Water Management</h3><p><strong>Rule Industries</strong> has been synonymous with marine pump reliability since 1965. Founded when inventor Clinton Rule set out to solve the all-too-common problem of a leaky boat, the brand grew from a single innovative product into the world's most recognized name in submersible bilge pumps. Today, Rule operates under the Xylem family of water technology brands, but its identity — and its commitment to keeping vessels dry and boaters safe — remains as focused as ever.</p><p>For over five decades, Rule has set the industry benchmark in marine water management. Whether you're a weekend recreational boater, a tournament angler, or a commercial vessel operator, Rule's engineering philosophy is straightforward: build equipment that performs when it matters most. That reputation has earned Rule a place on the spec sheets of boat builders around the globe, with professionals and DIYers alike reaching for the Rule name when reliability is non-negotiable.</p><h3>Electric Bilge Pumps: Rule's Flagship Product</h3><p>The heart of the Rule lineup is its range of <a href="/6623-rule-industries-electric-bilge-pumps-200350">electric bilge pumps</a>. Available in both manual and automatic configurations, Rule bilge pumps are engineered to remove water from the lowest point of a boat's bilge efficiently and reliably. Automatic models feature water-sensing switches that activate the pump as needed, offering hands-free protection without draining the battery. Heavy-duty models incorporate stainless steel shafts, marine-grade blocked wiring, and ignition protection, while the Gold Series pumps are backed by a five-year guarantee — a testament to Rule's confidence in its own craftsmanship.</p><h3>Livewell &amp; Aerator Pumps for Serious Anglers</h3><p>Rule's expertise in water movement extends naturally into the fishing world. The brand's <a href="/6623-rule-industries-livewell-aerator-pumps-200624">livewell and aerator pumps</a> are engineered to circulate and oxygenate water in livewells and baitwells, keeping catch and live bait healthy throughout a long day on the water. Rule's Oxygenator Systems infuse air at the pump impeller to produce micro-fine bubbles that remain suspended longer, maximizing oxygen transfer to your bait or catch. The Tournament Series models feature a cartridge-style motor design that can be removed and replaced quickly — even mid-trip — keeping downtime to a minimum.</p><h3>Blowers, Plumbing &amp; Accessories</h3><p>Rule rounds out its marine offering with a suite of supporting products that complement its pump lineup. The brand's <a href="/6623-rule-industries-blowers-200176">bilge blowers</a> provide ventilation for engine compartments, bilges, galleys, and heads, featuring corrosion-resistant motor housings, front and rear shaft seals, and USCG 183.410 ignition-protection compliance. For system builders and installers, Rule also offers <a href="/6623-rule-industries-plumbing-parts-accessories-200786">plumbing parts and accessories</a> along with <a href="/6623-rule-industries-nylon-pipe-hose-fittings-200724">nylon pipe and hose fittings</a> — the connective tissue that ties a complete marine plumbing system together. With a catalog spanning over 135 products, Rule gives boaters everything they need to build, maintain, and upgrade their vessel's water management systems from a single trusted source.</p><h3>Why Boaters Trust Rule</h3><ul style="list-style:disc"><li>Over 60 years of continuous marine pump manufacturing since 1965</li><li>Submersible bilge pump designs trusted by boat builders from the factory</li><li>Automatic and manual models to suit every vessel type and size</li><li>Products engineered to meet rigorous commercial and recreational standards</li><li>Part of the Xylem global water technology portfolio</li><li>Wide availability through marine dealers across the US, Canada, Australia, UK, and beyond</li></ul>

Part Number

RM500B24
09/16/2036 1:21 PM
Sale Price

$93.32

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Rule Industries RM500B24 Rule-Mate automatic bilge pump delivers reliable, hands-free water removal for 24-volt marine applications. This fully automated pump uses advanced solid-state water sensing technology that eliminates the need for a separate float switch, providing true set-and-forget operation for your vessel.

Intelligent Auto-Sense Technology:

The pump automatically activates when water reaches 2.5 inches and shuts off at 5/8 inch water depth, keeping your bilge clear of nuisance water. The sensors measure dielectric constant and will only recognize water—pure motor oil that enters the bilge will not turn the pump on, making this an environmentally conscious choice. Unlike other automatic bilge pumps, there is no continuous power-draining test cycling.

Advanced Backup Protection:

If debris or contaminated water fouls the sensor, the pump's intelligent backup mode prevents battery-draining run-on conditions. The system will automatically enter a 2.5-minute cycle testing mode, continuing to check for and pump water while protecting your battery. Once the debris is cleared, the pump automatically reverts to normal level sensing operation.

Key Features:

  • 500 GPH (1,893 LPH) flow capacity at 24 volts
  • Solid-state water sensing technology—no float switch required
  • Compact design, two-thirds the size of previous models
  • Built-in thermal cut-off protection prevents overheating
  • Integral backflow prevention check valve reduces odor and keeps bilge cleaner
  • Hidden air vents help prevent airlocks in challenging installations
  • Anti-fouling impeller design
  • 3/4" threaded discharge outlet with included hose barb
  • Fully submersible and ignition protected
  • 3-year manufacturer warranty

The RM500B24 is ideal for boats and vessels with 24-volt electrical systems, offering dependable performance in a compact, maintenance-friendly package. The threaded discharge design makes installation and maintenance easier, while the snap-off strainer base allows for quick debris cleaning.

Products specifications

Amperage

1

Capacity

500 Gallons per Hour

Diameter

3/4 Inch & 1 Inch

Voltage

24 Volts

Activation Method

Automatic

Warranty Details

Three Year Limited Warranty

Easily found what I was looking for. Arrived quickly. Unfortunately, although the website said the product fit my car, it didn't. In fact the label on the product (pedal pads for Mazda Miata) indicated they were for a later version of the car, even though the website indicated they'd fit. Customer service was very responsive and refunded my money right away.

so far so good

Only one who had my camshaft got it in 2 days

Easy to purchase and fast!

I was a bit confused about the part selection for my Impala, so I took some extra steps to make sure the selection was as right as I could make it.

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