Common Questions Is this a direct replacement for the 5SME39SL0904

and PFG boilers

provided the voltage ratings (120V primary/24V secondary) match

Technicians prefer this model for its compact footprint and reliable pressure regulation in complex pneumatic panels

while the high-pressure side monitors discharge levels from 150 to 450 PSI with a 70 PSI fixed differential

Bard HVAC 8406-075 Pressure Switch 324846-701 Common Questions Is this aThe Bard HVAC 8406 075 Pressure Switch is a critical safety and operational control designed specifically for Bard wall mount units, heat pumps, and air conditioning systems. This high precision air pressure switch is factory calibrated to a setpoint of . 65" WC + . 05", ensuring that your system maintains appropriate airflow and venting conditions before allowing the ignition or cooling cycle to proceed. For technicians troubleshooting short cycling