Monday, July 20, 2015

Stenner VS Precision Metering Pump

What is the Difference Between Stenner Peristaltic Metering Pumps and Precision Diaphragm Metering Pumps When Used for Chlorination?
Precision Metering Pump
Precision Metering Pump

Stenner Pump
Stenner Pump
Hello – I have a question.  I want to put in a chlorinator pump for our well water. I run a mobile  home park and our well runs about 10 hours a day. What is the difference between Stenner metering Pumps and your Precision-24 metering pumps?

Mobile Al


Stenner Pumps are Peristaltic, which means they use a peristaltic action, whereby a hollow tube  is “pinched” by rollers to pump the solution.  One advantage of these pumps is that they are totally self-priming.  Self-priming means it automatically sucks up chlorine solution without having to prime or add solution to the pump end of the pump.  The drawback to this pump is that the pump tube wears out fairly easily (about 6 – 12 months under heavy use) so requires frequent replacement (one additional tube is included with purchase), and cost is a bit higher than the Precision-24.  In our experience, they are best for light duty residential use.

The diaphragm type pumps we use last longer and work on higher pressures.  For example the Precision-24 pump is rated to 125 PSI.  The peristaltic pump is rated to 100 PSI, however it is best to keep the pressure less than 95 for best results.

Precision-24 pumps have two ways to adjust the output of the pump. They use a combination of the Speed (Yellow Knob) and the Stroke (digital display) in order to fine-tune a pumps output.  Instead of just one adjustment with the Stenner pump, there are two adjustments which give more flexibility.  The Precision pump allows one to adjust both the speed and the stroke of the pump.

The diaphragm pumps are more durable and can pump 24 hours a day with no problem, and allow for more precise dosage adjustment.  For your application we would recommend a diaphragm pump over the peristaltic pump.