The purpose of the boiler drum air cock is...

Question 1 / 270705eccefa0bacbc34ba4d46d20

Question 1 of 270705eccefa0bacbc34ba4d46d20

The purpose of the boiler drum air cock is to __________.

Question 1 of 27070

The purpose of the boiler drum air cock is to __________.

🔍 Key Concepts

• Function of an air cock or vent on a boiler drum • What happens inside the drum when a boiler is filled, emptied, and lighted off • Why trapped air in a boiler is dangerous or undesirable

💭 Think About

• Think about each operation (filling, emptying, and generating steam) and ask: in which of these situations do we need to let air in, and in which do we need to let air out? • Consider what would happen to the boiler if air could NOT escape while water is entering the drum, or if air could NOT enter when the boiler is draining. • Ask yourself whether this fitting is usually designed for just one of these operations, or is it commonly used whenever air needs to be controlled in or out of the drum.

✅ Before You Answer

• For each option, decide: does this action require admitting air or releasing air from the drum? • Verify which direction the air cock is normally used for during boiler filling and lighting off. • Check whether the same fitting is commonly used in practice for more than one of the listed purposes.

Question 1 of 27070

The purpose of the boiler drum air cock is to __________.

admit air when the boiler is being emptied

permit escape of air when steam is forming in the drum after lighting off

permit escape of air when the boiler is being filled

all of the above

Question 1 / 270705eccefa0bacbc34ba4d46d20

Question 1 of 270705eccefa0bacbc34ba4d46d20

The purpose of the boiler drum air cock is to __________.

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Question 1 of 27070

The purpose of the boiler drum air cock is to __________.