HPC Fire 24" Round Flat Pan Push Button Fire Pit Insert PENTA24FPPK-FLEX24" Round Flat Pan Push Button HPC Fire Pit Insert PENTA24FPPK 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