When flanged fittings are to be used at temperatures below -20°F, what pressure rating is to be used?
a) The pressure rating at the actual service temperature, found by interpretation.
b) The pressure rating at -20°F.
c) The pressure equal to the flange class.
d) Flanges complying with ASME B16.5 may not be used below -20°F.
a) The pressure rating at the actual service temperature, found by interpretation.
b) The pressure rating at -20°F.
c) The pressure equal to the flange class.
d) Flanges complying with ASME B16.5 may not be used below -20°F.