"This standard is applicable to (a) thermostatic expansion valves (also referred to in this standard as expansion valves) as defined in Section 3@ ""Definitions@"" (b) expansion valves of the direct-acting type but not the pilot-operated type@ and (c) many currently used refrigerants deemed available and suitable according to ANSI/ASHRAE Standard 15@ Safety Standard for Refrigeration Systems@ and ANSI/ASHRAE Standard 34@ Designation and Safety Classification of Refrigerants. This standard specifies procedures@ apparatus@ and instrumentation that will produce accurate capacity data. This standard does not (a) specify tests for production@ specification compliance@ or field testing of expansion valves@ nor (b) specify capacity rating conditions for testing expansion valves. These may be found in ARI Standard 750@ Thermostatic Refrigerant Expansion Valves."