Standard 1121, Edition 5
Red Line
July 27, 2016
UL 1121

Standard for Marine Through-Hull Fittings and Sea-Valves

UL Red Line Edition 5 Published Date: July 27, 2016
Summary of Topics s1121_5_sum.html

Summary of Topics

This revision:

Changes requirements for the external flanges of a through-hull fittings; and

Deletes 7.4, adds seacock zerk fitting requirements in 7.9 and adds in 7.10 optional requirements for seacocks to accept BSPP threaded through-hull fittings.

Back to Standard 1121, Edition 5

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