Gorman-Rupp Shield-A-Spark self-priming centrifugal pumps are the safest approach to handling flammable liquids with an engine-driven pump. This unit features dependability, rugged military or aircraft type spark plug which is RFI suppressed and prevents spark gap jumping. Shielded ignition wire provides enclosed path for high tension spark. Sealed toggle ignition switch is safe and spark-free. Spark-arresting muffler is designed to retard both spark and flame.