CAN ULC-S543-2009 (R2016) PDF Download

CAN ULC-S543-2009 (R2016) is a standard for internal lug quick-connect couplings for fire hose. The standard outlines the minimum requirements for non-threaded, quick connect couplings of the internal lug design that are used in fire protection service. These couplings are intended for use with fire hoses in five standard sizes: 38 mm, 65 mm, 100 mm, 125 mm, and 150 mm.

Additionally, the standard includes requirements for the non-threaded, quick connect portion of adaptor fittings. These fittings are used to modify threaded fittings to accommodate couplings of the internal lug design. The rest of the requirements for these adaptor fittings are in accordance with the relevant sections of the standard for threaded couplings for 38 mm and 65 mm fire hoses (CAN/ULC-S513).

It is important to note that the April 2016 reaffirmation of the second edition of the standard indicates that there have been no technical changes made to the standard.