leading to sticking or electrical failure at the contacts

If your application requires a local override button or LED indicator

Bi-directional flow capability allows for versatile installation in heat pump or complex refrigeration cycles

When replacing older Erie zone valve motors

Trane CNT4991 Pressure Switch R-410A leading to sticking or electricalThe Trane CNT4991 is a 10 inch SPST pressure switch engineered for precise atmospheric monitoring in high efficiency Trane and American Standard HVAC systems. This OEM air pressure switch features a single pole single throw (SPST) contact configuration, rated at 0. 1" WC (water column) for low pressure detection. It is designed to interrupt or complete the 24V control circuit (rated at 28 VA) when specific airflow or flue gas pressure thresholds are