Final answer:
A fluid service that meets the criteria described is known as a category D fluid.
Step-by-step explanation:
In industrial settings, categorizing fluids helps in understanding their properties and handling requirements. A category D fluid, as described, refers to a specific type of fluid that meets stringent safety criteria. Such fluids are non-flammable, meaning they do not ignite under typical conditions. Additionally, they are nontoxic and do not cause harm to human tissue upon contact or exposure. These characteristics make them safer for handling by personnel.
Moreover, the prescribed limit of 150 psi for gage pressure ensures that these fluids operate under relatively lower pressures, reducing the risk of leaks, ruptures, or equipment failures. The designated temperature range of -20 degrees through 366 degrees Fahrenheit signifies that these fluids can function within a broad temperature spectrum without compromising their properties, allowing for versatile applications in various industrial processes.