Item "F" shown in the illustration is called...

Item "F" shown in the illustration is called a __________. See illustration MO-0115.

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🔍 Key Concepts

• Look at how item F is connected in the line relative to the 7‑bar outlet going "To Air Control Reservoir". • Compare the common functions of a pressure reducing valve versus a relief-type safety valve in a control‑air pressure‑reducing station. • Notice whether F seems to control downstream pressure continuously or only open when pressure gets too high and then discharge.

💭 Think About

• If the upstream air is 30 bar and the system outlet is 7 bar, which component in this diagram must be doing the actual pressure reduction, and where is that located? • In normal operation, would you expect item F to be passing air all the time, or only in an abnormal / overpressure situation? Match that behavior to the listed options. • Check the symbol details for F: does the spring arrangement and flow path look like a device that sets outlet pressure, or a device that simply opens at a preset limit to protect the system?

✅ Before You Answer

• Verify which valve in the group is clearly labeled as the main pressure-reducing device (it should be in the main flow path from 30 bar to 7 bar). • Check if F has a path that leads to vent / return, which is typical for a protective overpressure device, not for a normal flow controller. • Confirm that a sequencing valve is normally used to control the order of operations between actuators, not simply to protect or limit pressure in a single supply line.

🔍 Key Concepts

💭 Think About

✅ Before You Answer