Gaggia Group Head Dispersion Plate whole-bean-bulk-grinder-burr-sets/bunn-coffee-grinder-parts Check the tank's pre-charge with

Check the tank's pre-charge with a standard tire gauge at the air valve before plumbing it in - it should read roughly two-thirds of your system's cut-in pressure

For machines without the auto-steam system

Technician-level - requires a full piston teardown

always measure your existing portafilter's ear dimensions against spec before ordering

advanced diagnostics

Gaggia Group Head Dispersion Plate whole-bean-bulk-grinder-burr-sets/bunn-coffee-grinder-parts Check the tank's pre-charge withGaggia Group Head Dispersion Plate Brass dispersion plate that mounts under the shower screen to distribute water evenly across the puck, a direct fit OEM replacement for Gaggia's commercial group heads. SPECIFICATIONS Outer diameter: 57 mm Height: 14 mm Mounting: M5 threaded hole COMPATIBILITY Fits: Gaggia D90, Deco, E90, GD, GE, GE GD, LC D, TS, XD, and XE models INSTALLATION Simple hand tool swap once the shower screen and screw are removed, well