🔍 Key Concepts

• Flow directions of steam and water shown in the illustration • Purpose of a venturi mixing section when you inject water into a steam line • Difference between removing air from condensate vs reducing steam temperature

💭 Think About

• Look at where the steam is flowing and where the water is sprayed. What happens to the steam when fine droplets of water are injected into it inside a venturi? • Which of the listed devices is normally installed directly in a steam line with a spray nozzle, rather than being a separate tank or vacuum-producing device? • Ask yourself: is this device using steam to pump something, or is it using water to change a property of the steam?

✅ Before You Answer

• Identify whether the device’s main job is mixing steam and water inside the line, removing air, or creating suction. • Check which of the answer choices is normally drawn as a spray nozzle into a steam pipe with a mixing/venturi section and thermal sleeve. • Eliminate any options that are usually large vessels or tanks rather than an in-line fitting in the steam piping.