1.1 This document defines requirements and tests which apply to: collecting heads with a nominal pressure of 16 bar (1,6 MPa) PN16 which are used by fire and rescue services to combine two or more inlets into one or more outlets; dividing breechings with a nominal pressure of 16 bar (1,6 MPa) PN 16 which are used by fire and rescue services to divide one or more inlets into two or more outlets. NOTE 1 In this document, "ColDiv" is used to refer both to collecting heads and dividing breechings. NOTE 2 In this document, drawings of collecting heads and dividing breechings are shown inlets downwards and outlet upwards. 1.2 This document is not applicable to collecting heads or dividing breechings which have been manufactured before its date of publication as a European Standard.