CFR › Title 46 › Part 56 › §56.20-746 CFR §56.20-7Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Valves may be used with flanged, threaded, butt welding, socket welding or other ends in accordance with applicable standards as specified in subpart 56.60.(b)[Reserved]