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Stenner Pumps


Why Stenner?

Peristaltic VS Diaphram Pumps

What Pump do I Need?

Stenner has been manufacturing high quality peristaltic and diaphragm chemical feed pumps since 1957. Stenner pumps are uniquely designed for the water treatment industry, including municipal applications, cooling towers, car washes, and pools. If you are looking for a pump for residential applications, you need to know that the Stenner SVP, M128, and Stennicator pumps are not typically suitable for home use. The M128 and Stennicator are for agricultural use.

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Stenner Pumps has been in business since 1957 and has established an impeccable reputation as the manufacturer of the very best metering pumps in the industry. Their peristaltic pump has become the target to which all other companies aspire. Stenner pumps are uniquely designed for the water treatment industry, including municipal applications, cooling towers, car washes, and pools.

Based on a simple, well-engineered design that minimizes complexity and delivers outstanding performance, the time-tested Stenner pump design is known for exceptional reliability and ease of service, which increases dependability for users while reducing service time and expense. The key is "peristaltic pumping action" which makes Stenner chemical feeders completely self-priming against pressures up to 100 PSI. The exclusive 3-point roller assembly provides a positive 2-point seal on the tube. This eliminates the need for check valves and prevents siphoning. In addition, Stenner quality workmanship produces pumps that are durable and accurate to 2% at all settings.

US Water is your one-stop source for any Stenner pumps, tanks, or parts, and we have the expertise to help you apply, purchase, or service any Stenner product. Check out our complete selection of Stenner brochures, manuals, and videos available for download. If you have questions, just call one of our water experts at 1-800-608-8792 or e-mail us at

Why Stenner Pumps?

Quick and Easy Serviceability

The practical modular design saves valuable servicing time. All major pump components are secured by stainless locking rivets, allowing the units to be disassembled quickly without tools and can easily be converted to other models.

Less Down Time

The peristaltic pumping action of the Stenner pumps eliminates down time from prime loss due to off-gassing solutions and eliminates the need for troublesome degassing valves.

Easy Tube Replacement

Simple periodic tube replacement with quality Stenner pump parts minimizes down time and maintenance costs. You'll have easy tube changes with the QuickPro™ pump head, which requires no screwdriver and no screws. The cover is used to collapse or expand the roller assembly. No lubrication is required.

Dependable Mechanical Control

The feed rate control in the Classic series allows the pump's output to be scaled from 5% to 100% with the simple turn of the external dial ring.

100 psi Handling

Stenner manufactures a peristaltic metering pump that operates reliably against 100 psi.

Safe and Versatile

Various solutions and chemicals can be metered with Stenner pumps without harm to the unit because they are pumped without exposure to air or the moving mechanical parts. Hydraulic fluids are not used and therefore cannot leak into the solutions metered.

Interchangeable Components

The snap-fit modular design allows easy conversion to another model within a series, providing customers with flexibility for various applications.

The Peristaltic Advantage

Check out the advantages of the Stenner peristaltic versus a diaphragm pump:


Stenner PeristalticDiaphragm Pumps
Automatic degassing Requires optional degassing valve
Self-priming against pressure Must manually prime
Can prime up to 25 feet Primes 3 to 5 feet
No check valves in head Check valves prone to failure
Can mount in any position Must change head direction
Interchangeable outputs with tube change Must change drive and/or head

Stenner peristaltic metering pumps provide the most reliable means for injection of disinfectants, such as chlorine, to maintain a biologically safe water supply. Sodium hypochlorite is the most popular form of chlorine used for disinfection of private water systems. It is easy to test for and maintain a residual level throughout the plumbing system and is relatively inexpensive. Sodium hypochlorite can be used full strength or diluted with soft water to make a solution of suitable strength for maintaining the proper level of chlorine.

The Stenner peristaltic adjustable pump can be wired to the well pump pressure switch so that both pumps operate simultaneously for continuous chlorination. A dry contact water meter is used to activate the pump for proportional chemical feed. Stenner's proportional metering system provides repeatable dosages based on water volume regardless of system flow rate and consists of a Stenner fixed output pump, PCM, and water meter. The PCM system is now available on a pre-assembled panel called the Proportional Injection System that conveniently mounts to the wall for timely installations and equipment accessibility.

Stenner also offers a tank system consisting of a metering pump and solution tank that is shipped pre-assembled for easy and convenient installation.

Which Stenner Pump do I need?

Stenner has almost a hundred different pumps, but don't let that scare you! We can help you narrow your search down in just a few quick, easy steps.

Question #1 - Do you need a high pressure or low pressure pump? 

The quick answer is that if you are using the pump for a water treatment system that has a pressure control switch and the pressure is over 25 PSI, then you need a high pressure pump, plain and simple! However, if you are pumping a chemical into a system where there is less than 25 PSI back pressure, such as a pool recirculation system, cooling tower, or atmospheric tank, then a low pressure system will suffice.

Question #2 - Do you need a fixed output or adjustable output model?

If you aren't sure, then opt for the adjustable model Stenner pump. You will use the fixed output model if you are circulating or running water at the same rate all the time. If not, you will to be able to make adjustments.

Question #3 - Are you injecting just one chemical or more than one chemical?

If you are injecting just one chemical, then you will use a 45 or 85 Classic Series Stenner Pump, which has a single head. If you are injecting two chemicals, then it might be wise to use a 100 or 170 Series Stenner Pump, which have dual heads.

Question #4 - What kind of pump are you looking for?

Here are your options:

  1. Stenner Classic Series Pumps - These are the pumps Stenner has been making for decades. The following pumps are available:
  2. Stenner E-Con Series Pumps - These new Stenner pumps are economy priced for residential and light commercial applications especially if the water pressure is under 80 psi.
  3. Stenner SVP Series Pumps - This is a variable speed pump that activates in a 4-20mA mode from an input signal. If that doesn't sound familiar to you, you probably don't need this pump.
  4. Stenner M128 Proportional Pumps - These Stenner pumps are specifically designed for the agricultural and livestock industry for use with sanitizers, disinfectants, nutrients, and medications. This type of pump is often called a "medicator."
  5. Stennicator Proportional Pumps - Engineered specifically for medicating in the poultry industry, this type of pump is also designed to keep the birds hydrated and healthy.

Note:  If you are a homeowner or involved with installing a Stenner pump in a residence, the odds are that you will need a Stenner Classic high-pressure model.



Actual Price:
Our price is lower than the manufacturer's "minimum advertised price." As a result, we cannot show you the price in catalog or the product page.

You have no obligation to purchase the product once you know the price. You can simply remove the item from your cart.
Our price is lower than the manufacturer's "minimum advertised price." As a result, we cannot show you the price in catalog or the product page.

You have no obligation to purchase the product once you know the price. You can simply remove the item from your cart.