How would the illustrated valve respond to a complete loss of charge from the remote bulb-to-control diaphragm power element if the valve is used as a...

Question

How would the illustrated valve respond to a complete loss of charge from the remote bulb-to-control diaphragm power element if the valve is used as a temperature control valve for a steam-heated heavy fuel oil service heater? Refer to Illustration GS-0045

Accepted Answer

The valve would fail in the fully-open position, resulting in a high fuel oil temperature alarm.

Engine: Expired / General Subjects

How would the illustrated valve respond to a complete loss of charge from the remote bulb-to-control diaphragm power element if the valve is used as a temperature control valve for a steam-heated heavy fuel oil service heater? Refer to Illustration GS-0045

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