Retention Valve e-91-due-parts/e-91-due-steam-valve-new This expansion valve bleeds off

This expansion valve bleeds off excess hydraulic pressure into the drain cup

Fits: Rancilio Leva lever model only

or you'll lose the water-diffusing effect this cap is designed to provide

and Aurelia II group heads

Retention Valve e-91-due-parts/e-91-due-steam-valve-new This expansion valve bleeds off3 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