Joslyn Clark ~ A Complete line of quality Diesel and Electric Fire Pump Controllers "> Home | Contact Us | Site Map Controlog 240 Links to Related Sites: Namco Controls Dolan Jenner Danaher Industrial Controls Resources Links & Resources Product Spotlight A complete line of Diesel and Electric Fire Pump Controllers Joslyn Clark Controls, offers a complete line of Diesel and Electric Fire Pump Controllers. Life safety and fire protection for buildings and building content is our primary design consideration. These controllers meet or exceed all requirements of the National Fire Protection Assoc