This coupling is for blast machine models 1028 & 1042

with our airends they are good for 70

air flowing through the air cap must not exceed 10 psi

but they are not that expensive

Cam Spray Professional (2000 PSI) Electric-Cold Water Wall Mount Pressure Washer w/ Auto Start-Stop (230V 3-Phase) 5.5HP This coupling is for blastEconomy Wall Mounted Electric Pressure Washer Ideal for indoor repetitive cleaning kennels, print screens, etc. Save the money it costs for a full frame & cover to protect the unit Industrial Udor Triplex Plunger Pump Commercial quality for longer life span and can be rebuilt Unloader valve protects ceramic plungers & stainless steel valves Handles incoming water up to 160 F; 5 year warranty included Convenient Auto Stop Start Extends the life of the