Class 5 Boiler Practice Exam

True or False: All valves and cocks with steam or spindle must have adjustable pressure packing glands for steam and heating boilers.

1. True

2. False

3. Only for certain types of boilers

4. Only if specified by manufacturer

The correct answer is: True

Having adjustable pressure packing glands for steam and heating boilers is a critical safety and operational feature. The main reason this statement is true is that adjustable packing glands help maintain the necessary seal integrity around the valve spindle or cocks. This is vital in preventing steam leaks which can lead to inefficient boiler operation, increased fuel consumption, and potential hazards due to high-pressure steam escape. Adjustable packing systems allow for maintenance and longevity, as they can be tightened as needed to compensate for wear over time. This adaptability is especially important in environments where temperature and pressure can significantly affect the condition of the packing material. In contrast, having non-adjustable packing could result in leaks going unnoticed until they lead to more serious issues. Therefore, standard practice calls for all valves and cocks associated with steam or heating systems to be equipped with these adjustable packing glands, ensuring both effectiveness and safety in operation.