What device is designed to remain in place except during pressure relief device operation to minimize the entrance of water or extraneous matter into the tank's relief device or discharge piping?

What device is designed to remain in place except during pressure relief device operation to minimize the entrance of water or extraneous matter into the tank's relief device or discharge piping?

• A. Vent Cap
• B. Rain Cap
• C. Relief Cap
• D. Cap Weather Guard

Answer: (B)

Rain cap sits on the vent to shed rain and keep water, dirt, and other material from entering the vent and the discharge piping. By staying in place during normal operation, it protects the venting path from weather and debris that could cause clogging or contamination. It’s designed to be removed only during a pressure relief event so the relief discharge can vent freely without water or debris being pushed into the system. This combination of protection and temporary removal during venting best prevents intrusion while still allowing safe relief when needed. The other options don’t fit as well: a vent cap is a broader term and may not emphasize weather protection as specifically, a relief cap is meant for the relief valve itself rather than the vent, and a Cap Weather Guard isn’t a standard device used for this purpose.

Rain cap sits on the vent to shed rain and keep water, dirt, and other material from entering the vent and the discharge piping. By staying in place during normal operation, it protects the venting path from weather and debris that could cause clogging or contamination. It’s designed to be removed only during a pressure relief event so the relief discharge can vent freely without water or debris being pushed into the system. This combination of protection and temporary removal during venting best prevents intrusion while still allowing safe relief when needed.

The other options don’t fit as well: a vent cap is a broader term and may not emphasize weather protection as specifically, a relief cap is meant for the relief valve itself rather than the vent, and a Cap Weather Guard isn’t a standard device used for this purpose.