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CSA ANSI Z21.22-1999/4.4-M99
CSA ANSI Z21.22-1999/4.4-M99 Relief Valves for Hot Water Supply Systems
standard by CSA Group, 04/01/1999
Reduced price!
M00008565
New product
Full Description
1.1 Scope 1.
1.1 This standard applies to the following types of relief valves constructed entirely of new, unused parts and materials: (a) Temperature relief valves and combination temperature and pressure relief valves for use
