What type of vacuum breaker is not designed to be subjected to static line pressure?

The vacuum breaker non-pressure type is specifically designed for applications where it will not experience static line pressure. This means that it is intended for use in situations where the device does not have to maintain water flow under pressure, making it ideal for venting applications, such as in irrigation systems or for draining purposes.

This design allows the non-pressure type to function effectively by preventing back siphonage without being compromised by pressure conditions. It is crucial to install this kind of vacuum breaker in systems where static pressure might exceed its designed parameters, as it is not built to handle such stresses.

Understanding the characteristics of vacuum breakers is essential for ensuring the safety and effectiveness of plumbing systems, especially in preventing contaminants from entering the potable water supply. Other types of vacuum breakers may have specific applications that involve handling or working under various pressures, which is why they are not suitable for every scenario.