Section 56.50-97 - Piping for instruments, control, and sampling (modifies 122.3)(a) Piping for instruments, control, and sampling must comply with paragraph 122.3 of ASME B31.1 (incorporated by reference; see § 56.01-2 ) except that: (1) Soldered type fittings may not be used.(2) The outside diameter of takeoff connections may not be less than 0.840 inches for service conditions up to 900 psig or 800 °F, and 1.050 inches for conditions that exceed either of these limits.CGFR 68-82, 33 FR 18843, Dec. 18, 1968, as amended by CGFR 69-127, 35 FR 9978, June 17, 1970; CGD 73-254, 40 FR 40165, Sept. 2, 1975; USCG-2003-16630, 73 FR 65178, Oct. 31, 2008