What is an Agency Listing? | 2012-05-01 | Process Heating
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Cycling and leakage requirements for a typical 3" gas valve from various agencies are shown.
Safety shutoff valve manufacturers often seek agency (third-party) approval of their valves to meet local laws, codes or insurance regulations.
Manufacturers submit their products for evaluation for form, fit, and function. This includes rigorous tests addressing construction, mechanical and electrical performance. Table 1 shows cycling and leakage requirements for a typical 3" gas valve from various agencies.