Where should the T&P valve be located in the storage tank?

Where should the T&P valve be located in the storage tank?

• A. Bottom half of the tank
• B. Middle of the tank
• C. Top half of the tank
• D. Exterior of the tank

Answer: (C)

The safety relief valve should be located in the top half of the storage tank so it can sense rising temperature and pressure quickly and vent unobstructed when needed. Placing it high up means the valve responds to the hottest water near the top, where expansion and pressure buildup are most likely to occur, and keeps the discharge path clear of sediment that tends to collect at the bottom. It also ensures the discharge outlet remains above the tank’s bottom area, reducing the chance of blockage or submersion by the water. If the valve were lower, discharge could be impeded by sediment or not respond promptly to overheating, and the venting path could be obstructed or misdirected.

The safety relief valve should be located in the top half of the storage tank so it can sense rising temperature and pressure quickly and vent unobstructed when needed. Placing it high up means the valve responds to the hottest water near the top, where expansion and pressure buildup are most likely to occur, and keeps the discharge path clear of sediment that tends to collect at the bottom. It also ensures the discharge outlet remains above the tank’s bottom area, reducing the chance of blockage or submersion by the water. If the valve were lower, discharge could be impeded by sediment or not respond promptly to overheating, and the venting path could be obstructed or misdirected.