The nozzle, or tip size and pressure information with regards to spraying TotalBoat Lust marine varnish is as follows:
Airless Spray: the pressure should be roughly 170 bar/2500 psi, with a .33-.41 mm (11-16 thousandths) tip.
Pressure Pot: the pressure should be 3.44-4.47 bar/50-65 psi (gun pressure), and 8-10 psi (pot pressure), while the tip size should be .89-1.4 mm (35-50 thousandths).
Siphon Cup: the pressure should be roughly 3.44-4.47 bar/50-65 psi (gun pressure), with a 1.5-1.8 mm (60-70 thousandths) tip size.
The amount of thinner or reducer used to spray Lust is dependent on the environmental conditions and the equipment being used. For applications where a high gloss finish is desired, use the absolute minimum amount of reducer possible.