or a high-demand chilled water system

For normally open (NO) valves

High Torque Output: Delivers consistent 60 lb-in torque for managing large damper assemblies and heavy-duty valve linkages

Precise Threading: Features a high-tolerance 1/8" -27 FPT connection to prevent air loss during testing

Durable Construction: The cast bronze body and stainless steel trim are engineered for steam and water applications

Carrier HH18HA296 Limit Switch 319848-301 or a high-demand chilled waterThe Carrier HH18HA296 Limit Switch is a critical OEM replacement part engineered to maintain system integrity by monitoring discharge air or internal temperatures. This assembly serves as a high limit safety device, designed to open the electrical circuit if temperatures exceed the thermal cutout thresholdtypically calibrated around 300F for specific furnace and air handler applications. By integrating this genuine Carrier part, technicians ensure