Bradford White 239-48058-01 Pressure Switch 321894-706 this is a zero differential

this is a zero differential valve

Is the Carrier 20054502 compatible with other ST9120 models

Built-in Safety: Includes factory-installed breakers to protect the internal wiring and provide a safe service disconnect point for technicians

Always verify by looking at the discharge side (the direction air is being moved) to ensure it matches your existing motor and fan shroud configuration

The direct-actuation design ensures rapid response times of approximately 10ms

Bradford White 239-48058-01 Pressure Switch 321894-706 this is a zero differentialThe Bradford White 239 48058 01 Pressure Switch is a critical safety component designed for performance with power vented gas water heaters. This differential pressure switch is factory calibrated to 0. 80" WC (normally open), acting as the primary safeguard to verify that the combustion blower is generating sufficient draft before allowing the ignition sequence to proceed. As a professional grade OEM replacement part, it ensures seamless