Historical
ANSI Z21.22b-2001/CSA 4.4b-2001 (R2008)
ANSI Z21.22b-01(R08)/CSA 4.4b-01(R08) - Addenda 2 to ANSI Z21.22-1999/CSA 4.4-M99, Relief Valves for Hot Water Supply Systems
Scope
Details test and examination criteria for:1.Combination temperature and pressure relief valves for use on storage tanks of hat water supply systems without heater input limitation;
2.Valves having only pressure relief features for use on storage tanks of hot water supply systems without heater input limitation; and
3.Vacuum relief valves.
CONTENT PROVIDER
CSA America, Inc. [csa]
CSA America, Inc. [csa]