What is a common maximum connection size for threaded safety valves?

The maximum connection size for threaded safety valves is typically 4 1/2 inches. This dimension is widely accepted in the industry due to the standardization of safety valve sizes to ensure compatibility and functionality across various applications. Safety valves are crucial components in piping systems, designed to prevent overpressure situations by releasing excess fluid or gases.

Having a maximum size of 4 1/2 inches allows for sufficient flow capacity while maintaining the structural integrity and responsiveness of the valve. In many cases, valves larger than this size tend to be designed with flanged connections rather than threaded connections, leading to improved value in handling larger pressures and volumes.

This standardization is important for ensuring safety and compliance with regulatory requirements, as well as for manufacturers and installers who must adhere to specific guidelines when selecting and installing safety valves.