If you're using a Titan 460E or Wagner ProSpray 23 airless paint sprayer with HEA spray tips, this pressure gauge is a must-have upgrade. It screws right in with standard 1/4\ NPT male threads (comes with a tee fitting too). The whole point is to see your spraying pressure in real-time. There's a green zone on the dial from 900 to 1100 PSI – that's the sweet spot for best results with HEA tips. The max reading goes up to 4000 PSI. It's a fluid-filled gauge, which helps dampen the needle vibration for a steadier, more accurate reading. Made from sturdy steel with a brass fitting to prevent leaks. You can install it either right at the pump or on the gun itself to see pressure drops if you're running long hoses. Pro tip: use some Teflon tape on the threads for a perfect seal. A simple tool that gives you way more control over your paint job. Comes with a 12-month warranty.