How many test cocks are present in a standard RP assembly?

A standard Reduced Pressure (RP) assembly is designed to prevent backflow in a water system, and it is equipped with specific components to facilitate testing and maintenance. In the case of an RP assembly, there are typically four test cocks present, which are essential for the functioning and verification of the device.

These test cocks allow for the connection of testing equipment to measure the pressure at various points within the assembly. They are strategically placed to enable the testing of the upstream and downstream pressures as well as the pressure differential across the two check valves within the assembly. This arrangement is crucial for ensuring that the RP assembly operates correctly and effectively prevents backflow, which can contaminate the potable water supply.

Having the correct number of test cocks is vital for testing procedures, as it ensures comprehensive inspection and assessment of the RP assembly's performance. Therefore, the presence of four test cocks is standard and serves a fundamental role in maintaining and certifying backflow prevention systems correctly.