Why Does My Bar Stool Keep Rising?

A bar stool that creeps upwards on its own is telling you something specific: the release valve in its gas cylinder is not closing properly. This guide explains how the nitrogen and piston mechanism inside the chrome column actually works, then sets out the four causes behind a rising seat: a worn valve seal, a lever arm resting on the pin, a bent valve pin and contamination. There is a two minute diagnostic routine you can run yourself, an honest account of what can and cannot be repaired at home, and why refilling a cylinder is neither possible nor safe. We also cover the hose clamp stopgap, when a new cylinder makes sense against replacing the stool, and the habits that make a mechanism last....