Correct option is D
In a
pneumatic system, an
AND gate is referred to as a
dual-pressure valve. A dual-pressure valve outputs air only when
pressure signals are received at both input ports simultaneously. This behavior is analogous to the logical "AND" operation, where the output is activated only when both conditions are true. Dual-pressure valves are commonly used in safety and control circuits to ensure that two conditions are met before an action is taken.
Function of Dual-Pressure Valve: Combines two input signals, and if both inputs have sufficient pressure, the valve allows air to pass through the output.
Symbol Representation: In pneumatic circuit diagrams, the dual-pressure valve is represented as a logic AND gate symbol.
Applications:
Used in two-hand safety control systems to prevent accidental machine activation.
Ensures coordinated operation where two inputs must be active to perform an action.
Working Principle: If either of the two input signals is absent, the valve blocks the output.
