-Compact structure, easy to operate, strong self-priming ability. -Design:Single stage single suction, matching mechanical seal. -Material: cast iron / SUS304/SUS316L -Nominal Pressure:PN16. -Flange:DN standard or ASME B16.5 class 150, convex flange. -Temperature range:-20℃ to 120℃. -Features: self-priming without installing bottom valve.