Automatic Diaphragm Pump Pulsation Dampener Air Intake Connection Size 3/8 in Air Intake Connection Type NPT Air Intake Pressure (Maximum) 100 psi Compatible with Grainger Part Number Not Applicable Compatible with Manufacturer Model Number Not Applicable Dampener Type Automatic Shock Blocker Diaphragm Material Santoprene Housing Material Polypropylene Media Discharge Connection Size 1 in Media Discharge Connection Type NPT Media Intake Connection Size 1 in