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The internal valve insert assembly includes upgraded components to improve seat sealing and operational longevity
It is supplied as a complete kit
Upgrade and maintain system integrity with the York S1-331-03009-000 Control
High Flow Design: The 1000 scim capacity prevents signal lag in long-run pneumatic lines
Lochinvar & A.O. Smith 100167821 Board 326058-757 The internal valve insert assemblyThe Lochinvar & A. O. Smith 100167821 Integrated Control Board is a critical OEM component designed for high efficiency gas fired boilers and water heaters. As a direct replacement furnace circuit board, this module manages essential system sequences, including hot surface ignition, flame rectification, and manifold gas valve actuation. It serves as the central processing hub, utilizing real time sensor data to modulate thermal output and optimize
