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UL 1121

5th Edition, July 27, 2016

Complete Document

UL Standard for Safety Marine Through-Hull Fittings and Sea-Valves

Includes all amendments and changes through Revision Page(s) , July 27, 2016


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Product Details:

  • Revision: 5th Edition, July 27, 2016
  • Published Date: July 27, 2016
  • Status: Active, Most Current
  • Document Language: English
  • Published By: UL (UL)
  • Page Count: 19
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

These requirements cover marine through hull fittings intended to be used above or below the water line and marine sea valves for use as shut off devices to effect positive closure of boat hull penetrations.

These requirements do not cover the use of shut off devices as a means of establishing or controlling the flow rate of a liquid.

Requirements for the installation and use of marine through-hull hull fittings and seacocks covered by these requirements are included in Recommended Practices and Standards Covering Seacocks, Through-hull Hull Connections, and Drain Plugs, ABYC H 27, and the Recommended Practices and Standards Covering Installation and Protection of Hull Openings Between Waterline and Sheer Line, ABYC H 15.

A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.