The function of the illustrated device is to...

🔍 Key Concepts

• Study how intercoolers are arranged on multi‑stage air compressors (between the low‑pressure and high‑pressure cylinders). • Review the purpose of an unloader/bleed valve that operates when a compressor starts or stops. • Compare the roles of a pressure‑regulating valve (controls flow to the system) versus a relief/bleed valve (dumps air from a specific space).

💭 Think About

• From the sketch, trace the air path: where does air come from (bottom connection) and where can it go when the valve opens (side/upper port or to atmosphere)? • Think about what needs to happen in the intercooler manifold when the compressor cycles OFF so that the next restart is not loaded heavily. • Which choice describes an action on the intercooler space itself, and which choices talk about the low‑pressure cylinder, system load, or air receiver that may not match the piping shown?

✅ Before You Answer

• Verify which label on the drawing is connected to the bottom of the intercooler manifold and what that implies when the valve opens. • Check whether any line in the figure connects to the air receiver or system piping; if you don’t see that, be cautious of options that mention the receiver or system load. • Confirm whether the valve’s operation (note on the sketch about compressor running vs stopped) matches a function that occurs only when the compressor cycles off, rather than during normal flow control.

The function of the illustrated device is to __________. See illustration GS-0034.

relieve compressed air from the intercooler after the compressor has cycled off

relieve compressed air directly from the low pressure cylinder after the compressor has cycled off

provide variable discharge air flow to the compressed air system depending on the load on the system

direct compressed air from the air receiver directly to the low pressure cylinder unloading device

🔍 Key Concepts

💭 Think About

✅ Before You Answer