FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

A sequence valve is a type of pressure control valve that is used to cause one hydraulic operation to follow another in a specific order. It works by allowing fluid to flow to one component at a time, ensuring that the previous operation is completed before the next one begins.

Option A is incorrect because the valve's primary function is not to control fluid flow direction, but rather to control the timing of operations.

Option B is incorrect because while the sequence valve does control pressure to some extent, its main purpose is to control the order of operations.

Option D is incorrect because the sequence valve does not play a role in reducing hydraulic fluid temperature.

Therefore, the correct answer is C.