Discover Our Flame-Sensing Battery Spark System The system of this Manual Spark Ignition Kit – High Capacity utilizes a standing pilot with thermocouple sensing to safely control gas flow. 140,000 BTU Manual flame height adjustment Manual switch spark igniter (9V battery) Safety pilot valve mounted in a stainless steel box (7.5″ x 6.5″ x 2.6″) The pilot assembly tubing is 36″ long. Provides easy ignition and safety for outdoor fire features up to a 30″ fire ring or a 72″ linear burner.