scope:

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

Refrigerants. This standard applies to Thermostatic Expansion Valves for use with Refrigerants 12, 22, 502, 134a, 404A, 407C, 410A and 507.

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.