1.1 This specification provides the minimum requirements for design fabrication, pressure rating, and testing for line-blind valves. 1.2 The values stated in inch-pound units are to be regarded as the standard. The valu This specification provides the minimum requirements for design fabrication, pressure rating, and testing for line-blind valves. The materials for spectacle plates, bolting and body shall be determined. Each valve body shall be subjected to a hydrostat