🔍 Key Concepts

• Function of the discharge line between an air compressor and a receiver in a control air system • What happens to temperature and moisture in compressed air after compression • Typical components found in pneumatic control air systems vs. those found in other fluid systems

💭 Think About

• Think about what condition the air is in right after it leaves the compressor and what problem must be dealt with before it reaches the receiver • Consider which listed devices are normally used in air systems and which are more common in liquid or vacuum systems • Ask yourself which device’s main purpose is to protect the control air system from damage or malfunction caused by the by‑products of compression

✅ Before You Answer

• Verify which device specifically handles water/condensation in compressed air lines • Check which items in the list are normally installed downstream in the air line rather than on instruments or at the point of use • Eliminate any choice that is primarily used for vacuum protection or for converting one type of signal to another