| All adjustable rate feeders utilize a patented mechanical feed-rate mechanism.  
        
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                  | The number-one choice of water   professionals, Stenner pumps chemical feeders are based on a simple,   well-engineered design that minimizes complexity and delivers outstanding   performance.The time-tested Stenner design is renowned for exceptional   reliability and ease of service, which increases dependability for users while   reducing service time and expense.    |  |  
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          | Peristaltic pumping action makes Stenner   pumps chemical feeders completely self-priming against pressures up to 100 psi   and the 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,   their quality workmanship produces pumps that are durable and accurate to 2% at   all settings.    |  
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                  | All of these attributes add up to the best   value in the industry, for applications ranging from commercial swimming pools   and water conditioning to municipal, agricultural, and industrial uses. At   Stenner, our philosophy has remained the same since 1957, manufacture   high-quality, reliable products and maintain a total commitment to customer   satisfaction. |  |  |  
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