Before installing a reduced pressure zone (RPZ) device, what special consideration should be noted?

Before installing a reduced pressure zone (RPZ) device, it is crucial to consider the drainage of the relief valve. The RPZ device is designed to prevent backflow by maintaining a reduced pressure on the supply side of the device. If there is a backflow condition, pressure could drop in the system, causing contaminants to potentially enter potable water supplies. The relief valve on the RPZ allows water to be expelled to drain in the event of a malfunction, making proper drainage essential to ensure that any expelled water does not cause flooding or contamination.

If the relief valve does not have an adequate drainage outlet, it could lead to significant issues, such as water damage or spills in the installation area. Proper drainage ensures that expelled water is safely directed away from the installation site, maintaining compliance with health and safety standards while effectively protecting the water supply from contamination. This focus on drainage is a critical aspect of RPZ installation and a key consideration for maintaining system integrity and safety.