To set the pressure of the safety and relief valves, where should you find the information needed?

The name plate of the safety valve is the correct source for finding the information needed to set the pressure of the safety and relief valves. This plate typically provides crucial data including the set pressure, manufacturer details, model number, and sometimes information regarding inlet and outlet sizes. It is specifically designed to convey essential specifications to the operator, ensuring the valve is adjusted according to the manufacturer's guidelines.

The importance of using the name plate lies in its precision; it reflects the design and testing parameters established during manufacturing. Relying on other documents, such as the installation manual, might lead to confusion if the manual does not specifically address the exact model or configuration of the safety valve being used. Maintenance logs provide historical data about valve performance but do not include the pressure settings. The control panel may display operational metrics but typically does not indicate set pressure values for the safety valve itself. Thus, for accurate and safe operation, the name plate is the definitive reference.