This standard describes the special protective interior coatings for valves and hydrants used for water supply service. The standard covers the material, application, and performance requirements for these special interior coatings. The coating shall be either a liquid or powder epoxy system and shall not contain coal tar. These coatings are applied to interior ferrous surfaces of valves and hydrants intended for use in drinking water systems where corrosion protection is specified. The history of the standard, acceptance, information regarding use of this standard, and major revisions are covered in the foreword.
