As an OEM Bard HVAC part

ensuring the valve remains secure and functional in high-traffic mechanical rooms

ensuring no onsite field modifications are required

this synchronous motor-driven switch is the industry-standard direct replacement for the S8145-20

it is fully suitable for R-410A systems and other high-pressure applications

Carrier HK06WC030 Air Flow Switch 318820-201 As an OEM Bard HVACThe Carrier HK06WC030 Air Flow Switch is a factory authorized pressure differential switch engineered for precise performance monitoring in commercial and residential HVAC systems. Designed with a single pole double throw (SPDT) configuration, this switch provides versatile circuit control, allowing the system to trigger proof of flow signals or lockout sequences based on static pressure changes. It operates within a sensitivity range of 0. 05 to 2. 0