La Marzocco Linea/FB-70 Steam Valve Re-build Kit

La Marzocco Linea / FB-70 Steam Valve Rebuild Kit

A complete rebuild kit for the La Marzocco Linea and FB-70 steam valve, including the brass piston shaft with gasket, piston spring, spring bushing, two small piston shaft o-rings, two larger valve-body articulation o-rings for wand movement, a cotter pin, and the copper valve body crush washer. La Marzocco recommends servicing this valve every three to four months to keep it moving smoothly and sealing reliably.

COMPATIBILITY

• Fits: La Marzocco Linea and FB-70 steam valves

INSTALLATION

Technician-level job, requires depressurizing the steam boiler, removing the valve assembly, and working with snap rings and a cotter pin; every component in the machine can still be hot.

PRO TIPS

• Before starting, shut the ball valve on the steam supply line (or fully depressurize the boiler if there isn't one) and open the steam valve to bleed off residual pressure, skipping this is the most common way people get burned during this job.
• When reassembling, apply food-safe silicone lubricant liberally to every part, including the spring, so the valve moves freely and the o-rings don't bind or tear on reinsertion.
• You'll need a 16-17mm wrench for the rear supply fitting and a 26mm wrench for the front fixing nut, use a guard or extreme care on the front nut since a slipping wrench can easily mar the valve body.