What type of valves pose a low pressure and contamination risk?

Self-piercing saddle valves are designed to create a leak-free seal at low pressure, making them less likely to allow contaminants into the water supply. These valves penetrate the existing pipe without needing to remove it, which helps maintain system integrity and minimizes contamination risks.

Their construction typically allows for a controlled flow, which further reduces the likelihood of pressure surges that could introduce contaminants. Additionally, their application in various plumbing situations often involves less invasive methods, supporting their low-pressure profile.

In contrast, other types of valves, while functional in their own right, may not provide the same level of security against pressure fluctuations or contamination, especially in applications requiring higher flow rates or when they are improperly installed.