... specifications of 2 inch Gasoline Engine Water Pump WP20 : SpecificationsWater pump ModelWP20Inlet and outlet inside diameter(mm)50( ... Pump: WP10, WP15, WP20, WP30, WP40, DWP20, DWP30, DWP40 2011/09/26 --- 2049/12/31 ISO 9001:2008 WIT Assessment Co., Ltd ... ., CNAS 15/10Q1212R00 Assembly production of diesel generator, gasoline generator, diesel water pump, gasoline water pump and ...