FloJet G257501A 1/2 inch NPT(F) dual head air operated Santoprene diaphragm pump 38 lpm 6.9 bar (100 psi)FloJet G257501A G57 dual head air operated diaphragm pump 38 lpm max open flow 20 to 100 (psi) 1. 4 to 6. 9 (bar) 120 (F) 48. 9 (C) max fluid temperature Self priming to 15 ft (4. 5 m) Ports: air inlet and outlet 1 4 inch (6. 3 mm) hose tail, fluid inlet 1 2 inch (12. 7 mm), fluid outlet 1 2 inch (12. 7 mm) Inlet and outlet: 1 2 inch NPT(F) 12. 7 mm Diaphragm: Santoprene More: Flows up to 10 GPM (38 lpm) Chemical resistant Polyproplene housings with