Rancilio 3/8" M x 1/4" M Fitting for Drain Exhaust Tube common- It sits inside the rubber

It sits inside the rubber foot and takes the mounting bolt

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Rancilio part #21202376

this is a likely spot to check before suspecting the pump

Rancilio 3/8" M x 1/4" M Fitting for Drain Exhaust Tube common- It sits inside the rubberRancilio 3 8" M x 1 4" M Fitting for Drain Exhaust Tube This brass fitting is what the R_1213 drain pipe slides through, and is also the brass portion of the R_1165 complete expansion valve with threaded connection. This is a special order item shipped directly from the manufacturer separately from the rest of your order: in stock units ship fast, while out of stock units typically require 1 2 weeks for processing before shipping. SPECIFICATIONS: