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the internal float and seal can be cleaned if debris prevents the valve from seating properly
ensuring exact fit and function in existing pneumatic loops
This gauge is perfect for monitoring system operation
G27M4-100A
such as 200°F to 400°F
Viessmann 7858519 Assembly L99H008 the internal float and sealThe Viessmann 7858519 Ignitor Flame Sensor Assembly is a critical OEM component designed for high performance combustion control in industrial and commercial heating systems. This dual purpose assembly streamlines maintenance by integrating the electrode responsible for generating a high voltage spark with a precision flame rectification sensor. By providing real time feedback to the ignition control board, the 7858519 ensures safe burner operation
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