If you’ve ever been stuck with standing water in a meter box, a flooded trench, or a backed-up sink where a standard utility pump won’t fit, you know the frustration of manual bailing. The MILWAUKEE 2579-20 M12 Stick Transfer Pump stands out in the plumbing world for one brilliant reason: its 36-inch “stick” design. It allows you to reach deep into tight spaces while keeping your hands (and battery) dry, providing professional-grade drainage at the pull of a trigger.
We looked at the speed of the 9 GPM flow rate, the effectiveness of the HydroPass filter tech, how the 15-foot head height performs during vertical lifts, and whether the M12 battery system provides enough runtime for demanding job sites. Here’s the full picture.
The King of Small-Space Drainage — Fast, Portable, and Reliable
The Milwaukee M12 Stick Transfer Pump is a game-changer for plumbers, HVAC techs, and homeowners alike. By eliminating the need for extension cords or bulky submersible pumps, it offers unmatched portability. The 3/4″ garden hose outlet is standard and convenient, and the “stick” form factor means no more kneeling in the mud to drain a meter pit. It is a highly specialized tool that executes its primary mission—moving water fast from hard-to-reach places—with absolute precision.
What We Liked
- 36″ submersible shaft reaches deep without wet hands
- Powerful 9 GPM flow rate for fast drainage
- HydroPass filter prevents clogging from debris
- One-handed operation with lock-on trigger
- 15-foot head height for excellent vertical lift
- Lightweight and part of the vast M12 battery system
What to Know First
- Sold as “Tool Only” (Battery and Charger separate)
- Not intended for chemicals or flammable liquids
- Aluminum inlet is durable but should be rinsed after use
Product Specs at a Glance
| Product | Milwaukee 2579-20 M12 Stick Transfer Pump |
| Flow Rate | 9 Gallons Per Minute (GPM) |
| Max Head Height | 15 Feet |
| Pump Shaft Length | 36 Inches |
| Outlet Thread | 3/4″ Standard Garden Hose |
| Filter Tech | HydroPass (360-degree intake) |
| Weight | Approx. 3.3 lbs (Tool only) |
| Affiliate Link | View on Amazon → |
How the “Stick” Design Works Its Magic
Unlike traditional transfer pumps that require a suction hose on one side and a discharge hose on the other, the Milwaukee M12 Stick Pump acts as its own intake. The bottom of the 36-inch aluminum shaft features a 360-degree intake port. When you submerge the stick into water and pull the trigger, the internal impeller draws water up through the shaft and out the 3/4″ garden hose connector at the top.
The real technical hero here is the **HydroPass filter**. Milwaukee designed the intake to be resistant to the mud, leaves, and stones commonly found at the bottom of trenches or meter boxes. This allows the pump to maintain its 9 GPM speed even in “dirty” water situations that would instantly seize up a standard utility pump.
Why it’s a Jobsite Essential
For service professionals, time is money. Carrying a bucket or setting up a 120V submersible pump for a small puddle is inefficient. The M12 Stick Pump is designed for the “interim” jobs—those tasks where you need to move 5 to 50 gallons of water quickly so you can get to work on a pipe or valve.
This makes it a standout product in the Plumbing & Utility category. Its lightweight, cordless design means it can live in a service truck or a homeowner’s garage, ready to tackle a flooded washing machine, a water heater drain, or a clogged exterior drain in seconds with zero setup time.
Your First Drainage Task: What to Expect
Using the M12 Stick Pump for the first time is incredibly satisfying. Here is what to anticipate:
- The Setup: Simply click in any M12 battery and screw on a standard garden hose to the top outlet. There is no priming required.
- The Intake: Plunge the stick into the water. You will feel the weight of the aluminum shaft helping to keep the intake submerged at the bottom of the pit.
- The Flow: Once you pull the trigger, water begins flowing almost instantly. The 9 GPM rate is roughly equivalent to draining a standard 40-gallon water heater in less than 5 minutes.
- Trigger Lock: If you have a larger area to drain, the lock-on trigger allows you to set the pump in place and walk away to handle other tasks while it works.
Who is the Milwaukee M12 Stick Pump For?
Buy it if:
- You are a professional in plumbing, HVAC, or landscaping.
- You frequently deal with standing water in narrow or deep spaces.
- You already own Milwaukee M12 batteries and chargers.
- You want a fast, cordless way to drain water heaters or stock tanks.
Consider alternatives if:
- You need to move massive amounts of water (like a swimming pool).
- You are looking for a pump to handle gasoline or harsh chemicals.
- You do not own any Milwaukee M12 tools (the startup cost for batteries is high).
Frequently Asked Questions
How long does a battery last?
With an M12 4.0Ah battery, you can typically move up to 275 gallons of water on a single charge. This is more than enough for several meter boxes or a standard water heater.
Can it be used for hot water?
Yes, the pump is rated to handle water up to 140°F (60°C), making it suitable for draining water heaters that have recently been turned off.
Is the entire stick waterproof?
The shaft (the stick) is fully submersible up to the battery compartment. You should not submerge the handle or the M12 battery itself in water.
What kind of hose do I need?
The pump uses a standard 3/4″ male garden hose thread. For the best flow rate, use a 5/8″ or 3/4″ diameter hose that is as short as possible for your task.
Final Verdict
The MILWAUKEE 2579-20 M12 Stick Transfer Pump is a quintessential “solution” tool. It takes a messy, difficult job and makes it clean and effortless. While it’s a specialized investment, the build quality and the performance of the HydroPass filter make it a standout in the cordless utility market.
If you value your time and want a reliable way to handle standing water in tight, dirty environments, this stick pump is worth every penny. It’s powerful, ergonomic, and arguably the most convenient drainage tool ever designed for the 12V platform.
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