Sensus QR-S Damping Device 321702-401 factory-set at 100 PSI

factory-set at 100 PSI

Durable Construction: Cast iron body with brass trim provides superior resistance to mechanical wear

F adjustable differential determines the temperature drop required before the contacts re-close

Smith 100144972 Fan Motor Assembly is a critical OEM component engineered for high-performance combustion and ventilation in commercial water heaters and boilers

Common Questions Which boiler models use the 511-330-080 assembly

Sensus QR-S Damping Device 321702-401 factory-set at 100 PSIThe Sensus QR S Damping Device is a purpose built mechanical component designed to optimize gas pressure regulator performance in high demand environments. Engineering teams developed this device to address the rapid ignition cycle requirements of modern high efficiency boilers, burners, and generators. When high efficiency equipment triggers an electronic ignition, the sudden draw can create significant negative pressure, often leading to excessive