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If voltage is present but the Normally Open (NO) contacts fail to show continuity
mercury-free solution
If it matches the 225-275 degree range and the HH18HA276 part number
1/2-inch hub
Siemens Building Technology 331-2973 Kit 321894-709 If voltage is present butThe Siemens 331 2973 is a rugged, metal fabricated No. 4 pneumatic damper actuator designed for the gradual or positive control of HVAC systems and fire smoke dampers. Built for high demand applications, this piston type actuator features a 4 inch stroke and a nominal 8 13 psi spring range, ensuring precise positioning of ventilating systems and mixing boxes. This universal kit includes a mounting plate, pivot post, clevis, and damper crank,
US$ 29.99
US$ 29.95
US$ 32.50
