Which component controls pressure?

Which component controls pressure?

• A. Caliper
• B. Lockout/Tagout
• C. PPE
• D. Regulator

Answer: (D)

Pressure is kept within a desired range in fluid systems by a regulator. It works by sensing the pressure downstream and adjusting how much fluid can pass through a valve to maintain the set pressure. A spring and diaphragm typically cooperate so that when downstream pressure drops below the target, the regulator opens more to allow flow; when it rises above the target, it closes down to reduce flow. This automatic balancing makes the downstream pressure stable despite changes in supply or demand. The other items don’t regulate pressure: a caliper measures dimensions, lockout/tagout is a safety procedure to prevent unexpected operation, and PPE provides personal protection.

Pressure is kept within a desired range in fluid systems by a regulator. It works by sensing the pressure downstream and adjusting how much fluid can pass through a valve to maintain the set pressure. A spring and diaphragm typically cooperate so that when downstream pressure drops below the target, the regulator opens more to allow flow; when it rises above the target, it closes down to reduce flow. This automatic balancing makes the downstream pressure stable despite changes in supply or demand. The other items don’t regulate pressure: a caliper measures dimensions, lockout/tagout is a safety procedure to prevent unexpected operation, and PPE provides personal protection.