Siemens Building Technology 331-2998 Actuator Els PW 17895 This 10 5/8" diameter blower

This 10 5/8" diameter blower wheel features a 7 1/8" width and a standard 1/2" bore

The robust double-pole configuration provides effective circuit isolation

It is manufactured to meet ARPM IP-3-2 standards for oil and chemical resistance

a new defrost sensor (thermistor)

Siemens Building Technology 331-2998 Actuator Els PW 17895 This 10 5/8" diameter blowerThe 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