Massachusetts 2nd Class Fireman's Practice Exam

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Study for the Massachusetts 2nd Class Fireman Exam. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

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What is the purpose of using a siphon or pigtail with a steam pressure gauge?

  1. From steam temperature

  2. Against high steam pressure

  3. Against high water pressure

  4. Against an excessive amount of steam

The correct answer is: From steam temperature

The purpose of using a siphon or pigtail with a steam pressure gauge is primarily to protect the gauge from high steam temperatures. When steam enters the gauge, it can reach temperatures that may damage the gauge itself. By incorporating a siphon or pigtail, which is typically filled with water, the steam cools down before it reaches the gauge. This design allows the gauge to operate effectively while ensuring that its components are not exposed directly to the high temperatures of the steam. The siphon essentially acts as a barrier, capturing the steam and allowing for a reduction in temperature, which is crucial for accurate readings and longevity of the gauge. Therefore, using a siphon or pigtail is an important practice in managing the effects of high steam temperatures on pressure gauges.