(iii) Excess flow valves, where required shall close automatically at the rated flows of vapor or liquid as specified by the manufacturer. ... (vi) Except as provided in paragraph (c)(5)(i)(ft) of this section, excess flow and back pressure check valves where required by this ... (a) Vapor piping with operating pressures not exceeding 125 p.s.i.g. shall be suitable for a working pressure of at least 125 p.s.i.g.anbsp;...
|Title||:||Code of Federal Regulations, Title 29, Labor, Pt. 1900-1910. 999, Revised as of July 1 2010|
|Author||:||Office of the Federal Register|
|Publisher||:||Government Printing Office - 2010-09-28|