Fluid-o-tech Relief Valve/By-pass Valve espresso-coffee-grinder-parts/mazzer-astoria-rio-espresso-grinder-parts This only fits the new

This only fits the new version handles

coffee cups

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so both numbers are worth knowing if you're sourcing this part long-term

Fluid-o-tech Relief Valve/By-pass Valve espresso-coffee-grinder-parts/mazzer-astoria-rio-espresso-grinder-parts This only fits the newFluid o Tech Relief Valve By pass Valve This Fluid o Tech by pass valve protects the hydraulic system from over pressurization, opening to drain excess water when pressure builds too high. It can also be used to fine tune pump dispensing pressure. SPECIFICATIONS Fitting: 1 8" female BSP Seal: NBR Manufacturer part #: B2E COMPATIBILITY Fits: Fluid o Tech pumps using an M12 x 1. 0 mm female fitting to connect to the pump piston Exceptions: Ascaso pumps