Sensus 121-8-1 1/4 Regulator R-410A audible air leaks near the

audible air leaks near the blower assembly

For service technicians and mechanical contractors maintaining Trane and American Standard equipment

typically including the plunger assembly

allowing for targeted cleaning or replacement of the flame rod rather than trial-and-error part swapping

a dedicated boot holder

Sensus 121-8-1 1/4 Regulator R-410A audible air leaks near theThe Sensus 121 8 1 1 4 gas regulator is a heavy duty industrial regulator designed for high capacity applications requiring precise pressure control. Engineered for natural gas service and industrial combustion systems, this 1 1 4 inch NPT regulator features a 1. 5 12 inch W. C. spring to ensure stable downstream pressure. The Model 121 8 is frequently utilized in commercial boilers and furnaces where rapid response to flow changes is critical. Its