Franklin Electric Little Giant Grinder Pumps Deliver 414,000 Cuts Per Minute

Franklin Electric Little Giant Grinder Pumps Deliver 414,000 Cuts Per Minute
Franklin Electric Little Giant Grinder Pumps Deliver 414,000 Cuts Per Minute

Interested in Onsite Systems?

Get Onsite Systems articles, news and videos right in your inbox! Sign up now.

Onsite Systems + Get Alerts

The Little Giant GP Series grinder pumps from Franklin Electric are designed to handle low-pressure applications and residential and light commercial wastewater transfer where high head conditions exist. The pumps produce 414,000 cuts per minute and are equipped to handle the demands of grinding domestic sewage as a replacement pump or a packaged system.

The GP-A (automatic) is available for single-phase power sources, and the GP-M (manual) is designed for both single-phase and three-phase power sources. An epoxy-coated finish adds corrosion resistance and durability to the cast iron construction, while the cutting system provides tight cutting clearances, according to Scott Stayton, director of portfolio management at Franklin Electric.

“Our design is very efficient, and our grinder mechanism is one of the keys to its success,” Stayton says. “We have a patented ‘floating’ (stationary) cutter; this allows us to focus on the two pieces of the mechanism (stationary and rotating) in the manufacturing process and maintain a very close tolerance for a clean cut,’’ in conjunction with efficiencies in the motor and pump head.

“We also pump throughout the complete performance curve,” he continues. “We find grinder pumps in applications where they don’t belong, and it can be detrimental to the pump. So we removed the issue altogether, and said, ‘Let’s let it pump all the way through the curve,’ so that we could cover applications where higher pressure is demanded and others cannot reach.”

Units incorporate a nonclogging, corrosion-resistant brass impeller staged for efficient pumping of sewage slurries with a shut-off head of 130 feet, which Stayton says minimizes downtime and maintenance.

“The key to grinding is you want very fine particles so that it travels through the impeller assembly without clogging,” Stayton says. “If you have longer pieces of material, it can cause ‘roping.’ It will essentially tie itself together and can clog up the unit, so that’s one area we really wanted to focus on.

“When you’re not getting clogs, it’s a real advantage for contractors because they’re not getting a callback for something that should have been a nonissue.”

Pumps operate across voltages ranging from 208 to 230 volts. A single-phase, capacitor start/run motor with built-in overload protection prevents over-current and over-temperature damage. 260/824-2900;


Comments on this site are submitted by users and are not endorsed by nor do they reflect the views or opinions of COLE Publishing, Inc. Comments are moderated before being posted.