A Dead Man’s Valve (also called a Dead Man’s Handle or Dead Man’s Switch) is a safety control device designed to automatically stop the operation of equipment or flow of hazardous materials if the operator becomes incapacitated or releases control. 🔹 Definition: A Dead Man’s Valve is a valve that remains open only when actively held or operated by a person. Once the operator releases it (due to accident, fatigue, or emergency), the valve automatically returns to its safe (usually closed) position, stopping the flow of gas, liquid, or energy. 🔹 Purpose: To prevent accidents or uncontrolled discharge of fluids when the operator cannot act. To ensure immediate shutdown in case of an emergency or operator failure. To enhance fail-safe operation in high-risk systems. 🔹 Typical Applications: 1. Fuel and Gas Transfer Systems – In refineries, fuel loading arms, LPG stations, etc., to stop flow instantly if the operator releases the handle. 2. Firefighting Systems – On fuel pumps or foam mon...
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