The Brand Story
Stenner: A Retiree’s Hobby That Became America’s Peristaltic Pump
In 1957 most men who retired in Florida took up fishing or golf. Gustav Stenner took up pumps. Working in Jacksonville, he began building small metering pumps as a hobby, machines that could feed a precise trickle of chemical into a stream of water. The hobby outlived the man who started it. More than sixty years later, the pumps that carry his name are dosing chlorine into pools, wells and municipal water systems across the country.
Chapter 1 · 1957
A workshop in Jacksonville
Stenner Pump Company traces its beginnings to 1957, when Gustav Stenner started building pumps after his retirement. The design he settled on was peristaltic: a set of rollers squeezes a flexible tube, pushing a measured amount of liquid forward with each turn. The chemical only ever touches the inside of the tube, which makes the approach a natural fit for harsh liquids like chlorine and acid.
Chapter 2 · 1995 to today
Owned by the people who build it
Tim Ware became the owner in 1995 and spent the following decades broadening the product line and the markets it served. By the company's 60th anniversary in 2017, 49 percent of Stenner was owned by its employees, and nearly a third of the workforce had been there more than ten years. Stenner is still headquartered in Jacksonville, Florida, with two sites in the city and additional locations in Kansas and New York.
Florida pool service technicians know the pumps well. Mounted beside the equipment pad, a Stenner pump draws liquid chlorine from a tank and feeds it into the return line in small, steady doses while the filter pump runs, replacing the bucket-and-jug routine with something closer to a drip. The adjustment knob sets the dose, and when a tube wears out after months of squeezing, it is swapped in minutes.
Over the years the pumps found work far beyond pools: disinfecting drinking water, adjusting pH, removing iron stains, controlling corrosion and scale, and dosing medication into livestock water. The company now builds variable speed, proportional and flow-activated pumps, medicator pumps, tank and pump systems and the accessories that go with them.
The Lineup
What Stenner builds today
HVAC365 carries Stenner's workhorse peristaltic pumps for pool, spa and water treatment, plus the parts that keep them running.
- 45M series adjustable pumps: the 45M2 (0.5 to 10 gallons per day), 45M3 (up to 22 gallons per day) and 45M5 (2.5 to 50 gallons per day), rated at 25 psi and fitted with 1/4 or 3/8 inch tubing.
- High-pressure models: the 45MHP22 adjustable pump, rated to 100 psi for injection into pressurized lines.
- Higher-volume pumps: the 85 series at 85 gallons per day and the 170DM5 at up to 170 gallons per day.
- Classic Series: single-head adjustable pumps such as the 120 volt, 10 gallon per day model.
- Service parts: feed rate service kits and index plates.
- Browse automatic chemical feeders or the wider range of filters and sanitizers and pool and spa equipment.
At a Glance
Stenner at a glance
- Founded
- 1957
- Founder
- Gustav Stenner
- Headquarters
- Jacksonville, Florida
- Owner since 1995
- Tim Ware
- Employee ownership
- 49 percent (2017)
- Pump type
- Peristaltic metering pumps
- Other locations
- Kansas and New York
Questions
Frequently asked questions about Stenner
Where are Stenner pumps made?
Stenner Pump Company is headquartered in Jacksonville, Florida, with two sites there and additional locations in Kansas and New York.
When was Stenner founded?
Stenner traces its beginnings to 1957, when Gustav Stenner began building metering pumps as a hobby after retiring.
Who owns Stenner?
Tim Ware has owned Stenner since 1995. As of the company's 60th anniversary in 2017, 49 percent of the company was employee-owned.
What is a peristaltic pump?
A peristaltic pump uses rollers to squeeze a flexible tube and push a measured amount of liquid forward, so the chemical only touches the tube.
What is the Stenner 45MHP22?
It is a high-pressure version of Stenner's adjustable 45M pump, rated to 100 psi and up to about 22 gallons per day, for feeding chemical into pressurized lines.
What is the difference between the Stenner 45M3 and 45M5?
Both are adjustable 25 psi pumps. The 45M3 feeds up to about 22 gallons per day, while the 45M5 covers a wider range of about 2.5 to 50 gallons per day.
