NFPA Standard 86, Standard for Ovens and Furnaces, addresses specific control requirements that all industrial gas trains must have. Three requirements help provide the safety needed to properly and safely control the gas pressure to the burner.
Variation of the inlet pressure is normal under standard operating conditions, and it can occur for various reasons. One common cause occurs simply when other fuel equipment starts up, which causes a short term pressure drop in the gas piping system. A gas pressure regulator will help accommodate this short-term pressure drop so that the pressure variations do not reach the burner.