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Engine : Refrigeration AC - 120/610
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Rather than design an infinite variety of thermostatic expansion valve sizes to accommodate different capacities for heat removal, some manufacturers use a few standard valve body sizes in conjunction with what other feature?
A) an externally adjustable superheat to accommodate different heat removal capacities
B) internal needle valve orifices of various sizes to accommodate different heat removal capacities
C) a flexible diaphragm to accommodate different heat removal capacities
D) internal equalizers to accommodate different heat removal capacities
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