What is the maximum allowed pressure drop across a Double Check Valve Assembly (DCVA)?

The maximum allowed pressure drop across a Double Check Valve Assembly (DCVA) is set at 10.0 psi. This standard is established to ensure that the backflow prevention device functions effectively while preventing excessive pressure loss in the system.

The DCVA is designed to protect potable water supplies from contamination by creating a physical barrier against backflow. Maintaining the pressure drop at 10.0 psi allows for adequate performance of the mechanism while ensuring that pressure differentials do not compromise the function of the valve or the water distribution system. Excessive pressure drops could lead to operational issues, such as reduced flow rates or the potential for backflow if the system were to experience changes in pressure.

This specific limit is supported by industry standards and guidelines, making it critical for anyone involved in the installation and maintenance of backflow prevention devices to be aware of and adhere to these parameters for safety and compliance.