Rancilio Silvia 2016 Steam Valve Knob Current-style steam valve knob for the Rancilio Silvia, includes the knob spring. It fits older-version Silvias as well, though it's slightly wider than the original, on some machines the knob shaft can rub against the front panel depending on how the valve sits against the frame, and minor adjustment of the valve position may be needed. COMPATIBILITY Fits: Rancilio Silvia, including older versions (may require minor valve adjustment on some units due to the wider profile) INSTALLATION Simple DIY swap; if the knob rubs the front panel after install, loosen and re-seat the valve slightly rather than forcing the knob. PRO TIPS If you're installing this on an older Silvia and the knob shaft rubs the front panel, don't force it, back off the valve body slightly against the frame first, since the fit issue is almost always valve position, not a defective knob. The spring is included with this knob but is also sold separately, so you don't need to order it again unless you're replacing just the spring on an existing knob.