HPC Fire 25 x 8" Linear Interlink Fire Pit Insert FPPK25X8-L-FLEX25 x 8" Linear Interlink HPC Fire Pit Insert FPPK25X8 L FLEX Product Details This is our mid range fire pit insert utilizing safety pilot flame control simply push the ignition button and valve control knob to start flame adjustment is done with the knob. This battery operated system is a good solution for flame sensing necessity without AC power requirements. How It Works Start Up: This is done by simultaneously pressing the valve control knob to