These revisions are issued to correct format issues with the new/revised requirements published in the Eighth Edition of ANSI/UL 331 dated February 25, 2008:
1) Clarify Markings for Replaceable Spin-on Type Self-Contained Oil Filters in 20.2
2) Allow the Use of Non-Metals in Fuel Containing Devices in 7.3
3) Allow the Use of a Wing-Nut Plug or Petcock Valve for Cleanout and Drain Openings in 8.3
4) Clarification that the Pressure Drop Test is to be Conducted at the Rated Capacity and for a Range of Fuel Oils Using the Oil with the Highest Viscosity in 16.1
5) Clarification of Requirements for Sieve Analysis of Clogging Material in 17.4 and Table 17.1