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including 624490
Simple Installation: Standard 7/8-inch duct cutout with an integral gasketed flange simplifies mounting on sheet metal ducts
Standard HVAC manifold gauges and electrical tools are required to verify pressure setpoints and secure wire terminations during setup
it triggers an automatic reset once temperatures rise above the fixed differential
Is the junction box required for installation
Johnson Controls D-251-6002 Diaphragm 30067439-890 including 624490For field technicians maintaining legacy pneumatic systems, the Johnson Controls D 251 6002 Diaphragm is the primary replacement component for Number 2 pneumatic actuators. This replacement actuator diaphragm is engineered from a durable synthetic rubber compound, specifically designed to restore the pressure seal and stroke integrity of D 251 series damper actuators. In the field, a ruptured diaphragm leads to air bypass and failed damper
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