A refrigerant cylinder has a 125 lb. capacity. How many pounds can be stored in it?

The refrigerant cylinder is designed to have a total capacity of 125 pounds. However, refrigerants are often stored at specific filling levels to maintain safe operation and to accommodate thermal expansion. The typical practice involves not filling the cylinder to its maximum capacity to allow for pressure variations due to temperature changes and to ensure the refrigerant remains in a liquid state without venting.

The most common guideline is to fill the cylinder to about 80-90% of its total capacity. In this case, if 80% of the 125-pound capacity is calculated, it results in approximately 100 pounds. This allows for safe storage and operation within the defined pressure limits.

Understanding the correct filling practices for refrigerant cylinders is crucial to safety and system efficiency in refrigeration applications. Hence, the accurate answer aligns with industry norms on filling guidelines.