SATAjet 100 B Gravity Primer Spray Gun Nozzle P (2.5mm Nozzle Size) with 0.6L QCC Reusable Plastic Cup

Polyester spray putty has a much higher viscosity than standard primer or paint. The SATAjet 100 B P nozzle assembly and air cap are specifically calibrated to atomise these dense materials effectively. It allows for high film build, which means you can fill imperfections more efficiently. Standard guns may struggle to atomise the filler properly, leading to uneven surfaces and excessive sanding. This gun provides a sharp, defined fan pattern that puts the material exactly where you need it, significantly reducing the labour required to achieve a level surface.

The QCC (Quick Cup Connector) is a bayonet style fitting that allows for the rapid attachment and removal of the gravity flow cup. For a painter applying filler, this is a major advantage. It allows you to swap or clean cups in seconds without the need for threaded attachments that can become clogged with dried material. This system makes the setup and cleaning process much faster, which is vital when working with materials that have a short pot life.

For optimal performance with the SATAjet 100 B P, you should set your inlet air pressure to 2.0 bar (29 psi). This pressure is specifically chosen to ensure the gun delivers the correct atomisation and material volume for polyester filler. Always check your pressure at the gun inlet while the trigger is pulled to account for pressure drops through your hoses. Using the correct pressure is key to achieving a smooth application that requires minimal sanding afterward.