Our 4” diesel Double Diaphragm Pumps are capable of handling flows at significantly higher TDH ratings compared to standard trash pumps. These units are well suited for quarries and force mains, as well as other high head applications where the TDH requirement exceeds 75 feet. This diaphragm pump has a 24-hour run time, max operating pressure of 100 PSI, max capacity of 425 GPM. Please wear eye protection and safety shoes while using the diaphragm pump.