What are the numbered components in the attached picture of the LP tank piping<br/> <br/>I am assuming #2 is the solenoid for the LP gas detector and #4 is the regulator, is that correct?<br/> <br/>What are #1 and #3?<br/> <br/>Asking because I am considering removing the LP gas detector solenoid. Do not have gas to the cook top and the LP detector has been replaced with a two wire model (at least...