While our long established pump curves have been developed through tank testing and under the guidelines of the Contractor's Pump Bureau, our latest initiative in this area involves the certification of our performance curves. Specifically, we contracted with a third party engineering firm to have our equipment, data collection methods, actual test data and plotted curves reviewed and approved by a Professional Engineer, PE. The first three solids handling pumps with the PE stamp are the S6T, S4THL and S4T. As time allows, we will continue this program, with the goal being PE approved curves for all of our equipment. If you need a certified curve from a particular pump that is not listed above, contact us and we may be able to move it to the top of our testing schedule.