Siemens Building Technology 331-2998 Actuator Refrigerant This HVAC replacement filter helps

This HVAC replacement filter helps maintain proper airflow while capturing dust

This OEM temperature limit switch features a snap-action bimetal disc that ensures reliable circuit interruption when internal temperatures reach the 145°F cut-off point

Durable Construction: Heavy-duty internal switching components resist pitting and carbon buildup for extended service life

An open circuit (infinite resistance) indicates a tripped or failed switch

The set point is easily modified using the external adjustment screw located on the side of the housing

Siemens Building Technology 331-2998 Actuator Refrigerant This HVAC replacement filter helpsThe Siemens Building Technology 331 2998 is a high performance No. 4 Pneumatic Damper Actuator engineered for the gradual or positive actuation of HVAC dampers. This rugged, metal fabricated unit is a staple for contractors managing air flow in fire and smoke damper systems, mixing boxes, and terminal units. With a 4 inch stroke and a nominal spring range of 8 13 psi, this actuator provides the precise mechanical force required for reliable pneumatic