![](https://proportionair.com/wp-content/uploads/2023/07/NaturalGasControl_1400x1000.png)
Products used in this application:
The ISQBF is an FM-approved nonincendive pressure regulator for hazardous locations. In this application, the ISQBF controls pressure to a Burling Valve BD-4 regulator which then controls the pressure of natural gas going to a burner in a furnace. Command signal is supplied by controller or PLC.