Lochinvar & A.O. Smith 100208389 Pressure Switch 322056-301 Smith 100163249 Kit is a

Smith 100163249 Kit is a critical OEM replacement for maintaining visual access to the combustion chamber in high-efficiency commercial water heaters and boilers

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

Common Questions What is the difference between direct acting and reverse acting models

the valve disc is likely pitted or worn

How do I verify the rotation of this fan blade

Lochinvar & A.O. Smith 100208389 Pressure Switch 322056-301 Smith 100163249 Kit is aThe 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