The mechanical carryover prevents the clock motor from losing time during a black-out

Whether you are addressing decreased CFM or high-decibel mechanical noise

the unit supports multi-positional mounting (excluding upside down) and utilizes a right-hand outlet configuration for streamlined manifold connection

When you're out in the field dealing with industrial burner assemblies

Siemens Building Technology 331-2998 Actuator 320720-756 The mechanical carryover prevents theThe 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