Learning Center | Lafferty Equipment Manufacturing, Inc.

Venturi Proportioning – Principles of Operation

The venturi effect is used by many Lafferty products to dilute chemicals by drawing concentrates into the water stream.

ASSE 1055 Certified Mixing Stations

Select Lafferty Mixing Stations are certified to meet ASSE 1055, which is a widely-recognized standard for chemical dilution devices with an integral method of backflow prevention. Operators and inspectors can be confident that ASSE 1055 certified...

Check Valve Chemical Compatibility

Most check valves are available with Viton, EPDM or Kalrez seals and stainless steel or polypropylene bodies. Check valve substitutions for new equipment are available at the time of purchase.

Welcome to the Lafferty Learning Center

Discover new products and learn how to select, install, operate, and maintain chemical application equipment. The Lafferty Learning Center presents decades of institutional knowledge, tips/tricks, and best practices in a visual multimedia format.

Product specific guidelines are provided in the Installation and Operation Instructions for each unit, which are available on the main Lafferty website.

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Winterization Guidelines

During winter months, outdoor chemical application equipment is often unused and left outside or put into storage. If the weather or storage environment is going to be near freezing (32° F), your system MUST be properly...


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