ISO 6182-16-2020 pdf free.Fire protection – Automatic sprinklersystems.
1.Scope:This document defines performance requirements, methods of testing and marking requirements forfire pump relief valves intended to rapidly relieve the excessive water pressure in the supply piping forstandpipe systems or sprinkler systems or both. Performance and test requirements for other auxiliarycomponents or attachments to fire pump relief valves are not covered by this standard.
2.Normative references:The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies.Forundated references, the latest edition of the referenced document(including any amendments) applies.ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screwsand studs with specified property classes —Coarse thread and fine pitch thread.ISO 898-2,Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts withspecified property classes -Coarse thread and fine pitch thread.
3.Terms and definitions:For the purposes of this document, the following terms and definitions apply.
4.1 Nominal sizes and tolerances
4.1.1 The nominal size of a fire pump relief valve shall be the nominal diameter of the inlet and outletconnections, i.e. the pipe size for which the connections are intended.The sizes shall be 20 mm,32 mm,40 mm,50 mm, 65 mm,80 mm,100 mm, 125 mm,150 mm,200 mm,250 mm or 300 mm.The diameterof the waterway through the sealing assembly seat ring may be no more than one size smaller than thenominal size.
4.1.2Unless otherwise noted in a specific clause of this document, tolerances shall be in accordancewith Annex A.
4.2Connections
4.2.1 All connections shall be designed for use at the rated working pressure of the valve.
4.2.2The dimensions of all connections shall conform with the applicable requirements of relevantinternational standards. lf international standards are not applicable,national standards may be used.For example, IS0 6182-12 contains requirements for grooved-end components. Where there is not anIS0 standard developed, a national standard may be used for other connection types (i.e. threaded,flanged, or other suitable connections).ISO 6182 pdf download.