This is GRACO Airless Spraying Machine - Pneumatic Type
This GRACO one uses air compressor - no electricity.
What is it use for?
Same job - for spraying paint fast on big buildings, factories, tanks, ships - but this is industrial / heavy-duty version.
It is called Pneumatic Airless Sprayer - meaning:
• You connect it to a big air compressor (the black hose on top is air inlet)
• The air drives the piston pump below to suck paint and spray at very high pressure
• Because it has no electric motor, it can spray very thick, heavy materials that electric sprayer cannot spray
What it can spray that electric 495 cannot:
• Thick epoxy paint for factories, warehouses, oil tanks
• Heavy anti-rust primer
• Fireproof coating / intumescent paint
• Putty / filler / thick texture
• Marine paint for ships
• Road marking paint