The GXPC Upper Air Connection Kit (part# 7522) is made up of the following parts:

WARNING: couplers DO wear out

End Flange Inlet Manifold Kit from Graco that includes:

18" Tube Axial Paint Booth Fan w/ 1HP 575 Volt Three Phase Standard Motor

MTM Hydro 1/2" Plated Steel Ball Valve 1.3 & 1.8 mm The GXPC Upper Air ConnectionFeatures Grade: Professional Style: Gas Inflow: 1 2" Threaded (Female) Outflow: 1 2" Threaded (Female) High Quality Ball Valve For High Pressure Hoses Switch wands, tips, or hoses without shutting down the unit Saves time and effort Sturdy Zinc Plated Steel Construction Ball is chrome plated steel to resist corrosion Teflon Seals Superior leak and hot water resistance 176 F maximum temperature; 7000 PSI maximum pressure Large Handle Easy to turn,