Paint Spray Guns
Shop paint spray guns for air compressor use in automotive, body shop and general painting applications. A consistent finish depends as much on the gun as the paint — the products here cover gravity and suction feed options, with multiple nozzle sizes and adjustable pressure to suit different paint viscosities. Check the product specs for the operating pressure your compressor needs to deliver. Free delivery on orders over £200 to England and Wales.
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500ml PCL DIY Gravity Paint Spray Gun
£121.55 INC VAT
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£101.29 EXC VAT
Paint spray guns for compressor use
A spray gun delivers a better finish than a brush or roller on most surfaces, but the result depends heavily on matching the gun to the job. The key variables are feed type, nozzle size, and the air pressure at the inlet — get those wrong and the finish shows it.
Gravity-feed guns, where the cup sits on top, are the standard choice for automotive and body shop work. They use paint efficiently, clean out easily, and work well at lower pressures. Suction-feed guns hold more paint in the cup below the gun body and suit larger surface areas where frequent refilling would slow the job. Both types accept interchangeable nozzle sets for different viscosities.
Nozzle sizing matters: standard automotive topcoat runs at 1.3-1.4mm; primers and thicker coatings need 1.6mm or larger. Check the paint manufacturer's data sheet alongside the gun specification. Also confirm that your compressor can sustain the required inlet pressure consistently — a compressor that drops pressure mid-coat will show in the finish.
Frequently Asked Questions
What air pressure do paint spray guns need?
Most gravity-feed spray guns operate at between 1.5 and 2.5 bar (20-36 psi) at the inlet. Suction-feed guns generally require slightly higher pressure. Check the product specification for the recommended operating pressure.
What is the difference between gravity feed and suction feed spray guns?
On a gravity-feed gun, the paint cup sits on top and feeds paint by gravity. On a suction-feed gun, the cup sits below and paint is drawn up by the venturi effect. Gravity-feed guns are more efficient with paint and easier to clean; suction-feed guns can hold more paint for larger jobs.
What nozzle size do I need for automotive paint?
Standard automotive topcoat typically requires a 1.3mm to 1.4mm nozzle. Primers and thicker coatings may need a 1.6mm to 1.8mm nozzle. Check the paint manufacturer's recommendations alongside the product specification.
Can I use these spray guns for water-based paints?
Yes, most standard spray guns work with water-based paints, but the gun should be cleaned thoroughly after use to prevent paint drying in the passages. Stainless steel components are preferable for regular water-based paint use.
Do you deliver paint spray guns near me?
We deliver to England and Wales with free delivery on orders over £200.