Tech Anchor on Instagram: "A slide type fuel valve works by having a movable component (the "slide") that physically moves over a fixed set of ports to control the flow of fuel, similar to how a D-slide valve controls steam in an engine. The slide valve design minimizes the "sac volume"—the small volume of oil retained in a conventional valve's nozzle after injection—leading to more efficient fuel combustion, reduced fuel consumption, lower hydrocarbon and particulate matter emissions, and impro