Verify ASME A112.14.3 certification status for a hydromechanical grease interceptor before specifying it on a project

Steps

1. Identify the current published edition of ASME A112.14.3 (superseded editions include 2018, and the combined ASME A112.14.3-2022/CSA B481.1:22 edition) by checking the ASME/ANSI webstore listing before citing a year
2. Confirm the manufacturer's cut sheet or nameplate lists certification to the specific edition required by the locally adopted plumbing code, since older code editions may reference an earlier standard edition by name
3. Understand the standard covers construction/marking requirements plus performance testing and rating (efficiency, flow rate in GPM/L/min, and grease storage capacity) for hydromechanical grease interceptors
4. Check with an accredited third-party certification body or listing agency (e.g., a nationally recognized testing lab) that the specific model/size is currently listed, rather than relying solely on manufacturer literature
5. If the interceptor is also being marketed as meeting CSA B481.1, confirm whether the harmonized combined standard applies, since recent editions merge the two national standards into one document