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Enhanced Torque Capacity: Sintered carbon steel construction provides superior strength compared to standard cast iron alternatives
and pilot control circuits
maintaining the necessary pressure differential for reliable flame rectification
For technicians troubleshooting frequent "Air Pressure SW" lockouts
Lochinvar & A.O. Smith 100189054 Collar 322838-753 Enhanced Torque Capacity: Sintered carbonThe Lochinvar & A. O. Smith 100189054 Collar is a precision engineered 4" flue collar essential for maintaining the structural integrity of high efficiency venting systems. As an OEM component, this kit provides a secure, gas tight transition between the appliance and the exhaust infrastructure, preventing hazardous leaks and ensuring optimal draft performance. This specific part is a direct replacement for legacy units, as 100189054 is identical to
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