What should not be located on either side of a safety or relief valve connection?

The correct response highlights that valves should not be located on either side of a safety or relief valve connection. This requirement is critical for ensuring the safe and effective operation of the safety or relief valve system. The primary function of a safety or relief valve is to automatically release excess pressure, preventing potential hazards such as equipment failure or explosions.

If a valve were placed on either side of this type of valve, it could trap pressure in the system, negating the very purpose of having a safety or relief valve. This could lead to dangerous conditions where the pressure exceeds safe limits because the relief mechanism would be effectively disabled due to the presence of the valve.

In contrast, piping, supports, and insulation are acceptable to have in proximity to the safety or relief valve. Piping can facilitate the safe discharge of fluids, supports can aid in the structural integrity of the installation, and insulation may be necessary to maintain appropriate temperatures or to protect individuals from hazards, provided these elements do not interfere with the valve’s function. Understanding these distinctions is crucial for ensuring compliance with safety codes and protecting both equipment and personnel.