Amana-Goodman 0130F00505 SPST Pressure Switch -0.70" WC

The Amana-Goodman 0130F00505 Pressure Switch is used to check and react to airflow or draught conditions by closing its single-pole, single-throw contact when the negative pressure is less than -0.70" water column in HVAC systems. It works by using an internal diaphragm that deflects with the change of pressure, which is then translated into an electrical change of contact. It is installed in ductwork or in areas near inducer assemblies and is connected to the sensing points via tubing, which helps in the operation of the system by ensuring proper airflow or venting controlled processes in furnaces and air handlers.