Q. What does a regulator do for gas?

A natural gas regulator maintains a safe gas pressure by monitoring the pressure of the gas downstream from the regulator and adjusting the spring valve accordingly. Most failed regulators eventually become blocked cutting off the gas supply. Some severe leaking has occurred once the diaphragm has burst. This issue has surfaced across the board for most gas brands and in a wide range of regulator designs. Fire up the stove or fire up the grill and if the flames are a sluggish yellow instead of a brilliant blue it's time to replace the regulator. This is another symptom of a low gas grill regulator pressure.