Standards Under Public Review

This draft of AHRI Standard 770-202x (SI/I-P), Performance Rating of Refrigerant Pressure Regulating Valves, is open for public review June 15, 2026 through July 16, 2026.

The purpose of this public review is to solicit technical comments from stakeholders on this revision, which includes the following updates to the previous edition:

·         Removes the term ‘volatile’ as a refrigerant descriptor because a phase change is not occurring in the valves

·         SI units are provided throughout the document including a direct conversion of Table 1 (I-P) to Table 2 (SI)

Please submit your comments regarding the attached revised draft. Reviewers should submit their comments using the public review comment form, which requires both identification of the problem and a recommended solution. Reviewers should submit the form to AHRI_Standards@ahrinet.org.