This standard applies to Thermostatic Refrigerant Expansion Valves for use with refrigerants listed in 2.1.1 at evaporator temperatures between 50°F [10°C] and -40°F [-40°C].

Refrigerants. The refrigerants included in this standard are: R-12, R-22, R-134a, R-404A, R-407C, R-410A, R- 502 and R-507A.

Purpose. The purpose of this standard is to establish for Thermostatic Refrigerant Expansion Valves: definitions; test requirements; rating requirements; minimum data requirements for Published Ratings; marking and nameplate data; and conformance conditions.

Intent. This standard is intended for the guidance of the industry, including manufacturers, engineers, installers, contractors and users.

Review and Amendment. This standard is subject to review and amendment as technology advances.