Retention Valve e-91-due-parts/e-91-due-steam-valve-new If your grinder's dose timer

If your grinder's dose timer has become erratic or won't complete a full cycle

it's an easy way to tell aftermarket from original at a glance if you're troubleshooting a mixed set of portafilters in a cafe

cut down on water hammer knock in the lines

Performance Touch steam wand for a more powerful steam

and some other manufacturers

Retention Valve e-91-due-parts/e-91-due-steam-valve-new If your grinder's dose timer3 8" BSP Retention Valve A 3 8" x 3 8" BSP parallel thread retention (check) valve, most commonly found in Spanish made equipment such as Futurmat and Mairali, and also used in some La San Marco machines. SPECIFICATIONS Thread: 3 8" x 3 8" BSP, parallel COMPATIBILITY Fits: Spanish made equipment (Futurmat, Mairali, and similar), select La San Marco models INSTALLATION A straightforward DIY plumbing swap for anyone comfortable working with BSP threaded