The Shellback Auto Pump Laundry System is a rugged, automatic utility pump that can handle high-volume laundry discharge. The Shellback 3-12-19 is a compact, "no-sump" greywater pump designed to remove wastewater from basement laundry tubs and utility sinks when the main sewer line is elevated above floor level.
Note: Requires a lint trap when handling washing machine discharge to prevent the pump's internal mechanism from clogging.
Product Details
- Automatic laundry tray pump system
- Designed for above-grade drain applications
- Compact no-sump design
- Built-in automatic sensing switch
- Manual override control
- Patented Quick Mount fitting
- Durable cast iron construction
- Handles up to 24 GPM flow rate
- 1/8 HP motor
- 7.5 ft cord length
- 1 in discharge pipe diameter
- 1-year warranty
Serviceability & Repair Parts
Keep this pump running for years with commonly replaced parts available separately.
Our Expert Review: Shellback Laundry Pump
Summary
I've installed quite a few Shellback Laundry Pumps, both as direct replacements and on new jobs. Overall, I've had a solid experience with them. I'd say it definitely fills a niche and generally performs consistently. There are only a handful of pumps that have this small form factor that can pump up to a hanging sewer, most of the other options available have a much larger discharge line. The Shellback 3-12-19 uses a 3/4 inch discharge line, which gives it a lot of flexibility during installation. When it's running, it's quiet, reliable, and just does what it's supposed to without any issues. In most cases, it really is a "set it and forget it" kind of pump that can last for years.
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Performance: 4/5 
The Shellback's performance is a mixed bag. It moves water quietly and efficiently, and for many, the automatic switch works reliably for long stretches. The manual override is a nice touch, as it allows you to drain the sink on demand. The major performance flaw, however, is the automatic switch's tendency to leave several inches of standing water in the basin. This can be a deal-breaker for some users and requires a constant manual override. If you are using the sink on a regular basis this is not a huge issue, but if you are going out of town, I usually recommend using the manual override to get the remaining water out of the sink, so you don't come back to stagnant water. While its pumping power is good, this one quirk prevents it from being a top performer.
User Experience: 4/5
Installation is generally straightforward for those with basic plumbing knowledge, and the "Quick Mount" fitting is a helpful feature. This pump is installed directly to the drain on the laundry tub replacing the flanged extension tube. The quiet operation is a huge plus, as it's a relief compared to many noisy pumps. The frequent need to manually drain the last bit of water can be frustrating. The lack of clear instructions for adjusting the automatic switch is also a consistent point of contention.
Quality: 3.5/5 
While some older models are renowned for their longevity, many modern units are plagued by an inconsistent quality that leads to early leaks and switch failures. The warranty process is often described as unhelpful and costly to the consumer. This is due to Shellback insisting that they handle all warranty issues and damage claims. The replacement parts are reasonably priced and readily available and with a little DIY can do, the pump is pretty easy to keep in service.
Value: 3/5
Given its high cost, the Shellback laundry pump provides decent value. If you happen to get one of the units that lasts for 10+ years, it's an excellent investment. However, if your pump gives you problems or fails, it's difficult to recommend at full retail price. The cost of a replacement every few years can add up quickly, making it a poor long-term value compared to more consistently reliable alternatives.
Final Verdict
The Shellback Laundry Pump offers a rare combination of compact size, quiet operation, and solid pumping power, making it a great fit for certain installations. While it can run for years with minimal fuss, occasional quirks like leaving water in the basin and variable build quality mean it's best suited for users willing to give it a bit of extra care when needed.
Learn more about laundry pumps in our blog, A Homeowner's Guide to Laundry Pumps: What You Need to Know!
Shellback Auto Laundry Pump FAQ
What is the Shellback 3-12-19-I laundry pump used for?
The Shellback Laundry Pump is designed to remove wastewater from laundry tubs and utility sinks when the existing drain line is too high for gravity drainage. It is commonly used in basement laundry rooms and utility areas where a standard drain connection is not available.
Does the Shellback Auto Pump Laundry run automatically?
Yes. The 3-12-19-I pump uses an automatic sensing switch that activates as water fills the basin and shuts off once the water level decreases. A manual override switch is also included for additional control when needed.
Can the 3-12-19-I handle washing machine discharge?
Yes, the Shellback pump can be used for laundry applications, but a lint trap is required when handling washing machine discharge to help prevent debris from entering and damaging the pump.
Does the Shellback Auto Pump Laundry require a sump pit?
No. Shellback's laundry pump is a compact no-sump laundry pump that mounts directly to a standard laundry tub drain connection, making it a good option for installations where a traditional sump basin is not practical.
