Description Description The Haskel 55818 conversion kit is a high-quality product that allows you to upgrade your existing Haskel pump with new inlet and outlet check valves. The kit includes all the necessary parts and instructions for easy installation and maintenance. The conversion kit improves the performance and reliability of your pump by ensuring optimal flow and pressure control. The Haskel 55818 conversion kit is compatible with various models of Haskel pumps, such as the 59025, 59075, and 59125 series. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Literature & Docs Accessories