Lochinvar & A.O. Smith 100208389 Pressure Switch 322056-301 the valve disc is likely

the valve disc is likely pitted or worn

featuring a screw-on cover type that simplifies maintenance access while remaining secure against casual interference

For contractors servicing HVAC induction systems

Optimized Combustion: The factory-set #27 orifice provides precise fuel metering to ensure clean ignition and consistent thermal transfer

How do I verify the rotation of this fan blade

Lochinvar & A.O. Smith 100208389 Pressure Switch 322056-301 the valve disc is likelyThe Lochinvar & A. O. Smith 100208389 is a critical safety component designed specifically for monitoring natural gas pressure in high performance heating systems. As a genuine OEM replacement pressure switch calibrated at 4. 1" WC, it serves as the primary safeguard to prevent ignition or sustained operation during low pressure scenarios. This part is a direct replacement for the obsolete PRS2004 and PRS2004K, ensuring seamless integration into