YAMADA NDP-5FPT 1/4 DIAPHRAGM AIR PUMP 100PSI 180 DEG NEW. Condition is New in orginal box. 3.4 Gallons/Minute Max. 1/4 NPT Fluid Port. Intake & Discharge Connection. 1/4 Female NPT (includes ball valve). 3/8 Female NPT (includes silencer). Air Supply Pressure (All Models). 20 to 100 PSI 1.4 to 7 kgf/cm. Discharge Volume Per Cycle.