WIWA Profit Series Model 4233 33:1 3828 PSI @ 0.43 GPM Air Assist Sprayer Unit on Wall Bracket Carbon Steel (Bare) Electric Propane Heater Air Exhaust Port Size (in) CFM_86 at 100 PSI Air Exhaust Port Size (in) 3 8 Air Exhaust Port Thread Gender Female Air Exhaust Port Thread Type NPT Air Inlet Size (in) 1 4 Air Inlet Thread Gender Female Air Inlet Thread Type NPT Application Industrial Ball Material 316 Stainless Steel Center Section Material Polypropylene Compressor Required Yes Diaphragm Compatible Material PTFE Diaphragm Material PTFE EPDM 2 Piece Fluid Inlet Size (in) 1 2 Fluid Inlet Thread Gender Female Fluid Inlet Thread Type BSPT Fluid Outlet Size (in) 1 2 Fluid Outlet Thread Gender Female Fluid Outlet Thread Type BSPT Fluid Section Material Polypropylene Manifold Configuration Center Port Manifold O Ring Material PTFE Material Polypropylene Maximum Air Consumption (SCFM) 28 Maximum Air Pressure (psi) 100 Maximum Cycle Rate (CPM) 400 Maximum Flow Rate (GPM) 15 Maximum Fluid Pressure (psi) 100 Maximum Operating Temperature (°F) 220 Maximum Solid Size (in) 0 Inlet port: 1 2" MPT Above average durability and trouble free performance are guaranteed by the double pistons As all models come in both Airless and Air Combi versions