🔍 Key Concepts

• Look carefully at the construction of each valve body and how many ports it has, and compare that to where each named valve is installed in a refrigeration system. • Think about which of these valve types normally has a sensing bulb or diaphragm and which is just a manual service/shutoff valve. • Recall that a king valve is typically a main service valve on the receiver or liquid line, while a thermal expansion valve directly controls refrigerant flow into the evaporator.

💭 Think About

• For each valve name in the choices, ask yourself: would this valve usually be automatic (pressure/temperature‑sensing) or purely manual? Then match that idea to the design shown. • Consider which valve type would normally have connections for a sensing bulb or pressure line. Do you see any such connections in the illustration? • Picture the location in the system where each valve lives (condenser water line, evaporator outlet, receiver outlet, suction line). Which of the illustrated shapes best matches a valve you’d expect to find there?

✅ Before You Answer

• Verify whether the illustrated valve has any diaphragm housing, bellows, or sensing bulb connection – these are hallmarks of automatic regulating valves like TXVs, water‑regulating, and evaporator pressure regulating valves. • Check if the valve appears to be a simple manual service/shutoff valve with flare connections, which would narrow it toward one particular answer choice. • Confirm that the size and complexity of the valve body in the illustration are consistent with the typical duty (small line service vs. larger automatic control in main refrigerant or water lines).