Siemens Building Technology 331-2998 Actuator Els PW 17895 The robust double-pole configuration provides

The robust double-pole configuration provides effective circuit isolation

While compatible with propane vapor

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

a new defrost sensor (thermistor)

The sample line connections use 1/4" OD metallic tubing with integral compression ferrules

Siemens Building Technology 331-2998 Actuator Els PW 17895 The robust double-pole configuration providesThe 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