What items do automatic sprinkler kits contain to stop the flow of water?

The correct answer involves the inclusion of tongs or wedges in automatic sprinkler kits. These items are specifically designed to temporarily stop or control the flow of water in emergency situations or during maintenance. The use of tongs or wedges allows firefighters or maintenance personnel to quickly and efficiently address leaks or bursts in the sprinkler system, providing them with the ability to manage water flow until a more permanent solution can be implemented.

Other options, while they may seem plausible in other contexts, do not serve the specific purpose of halting water flow in the same effective manner. For example, blockers and filters are more commonly used in different applications, such as filtering particles from water rather than controlling flow. Hoses and clamps are part of water delivery systems but don’t directly stop the flow. Valves and pumps are integral to the operation of a sprinkler system but are not tools that can be used to quickly and temporarily stop the flow of water when needed. Therefore, tongs or wedges are uniquely suited for this purpose in the context of automatic sprinkler kits.