Does the Impulse use a spoopet valve?
No. The Impulse has a pressure balanced poppet valve. Internet rumors have suggested that Smart Parts was soon to release a marker with a valve that was a hybrid of spool and poppet valve designs. These rumors were not true. The Impulse is a poppet valve marker. Although it is not a spool valve, the new Impulse valve core does share a feature in common with the some Smart Parts spool valves designs – a tail. The tail end of the valve core is exposed to the outside air, the same as the pin end. This allows the gas pressure in the Impulse valve to press equally in both directions, resulting in a balanced valve that requires very little force to open.
