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We invented the concept of flexible fire protection" <br />NFPA 13 STANDARD FOR INSTALLATION OF SPRINKLER SYSTEMS 2016 EDITION <br />9.2.1.3.3 Flexible° Sprinkler Hose Fittings. <br />9.2.1.3.3.1 Listed flexible sprinkler hose fittings and their anchoring components intended for use in installations <br />connecting the sprinkler system piping to sprinklers shall be installed in accordance with the requirements <br />of the listing, including any installation instructions. <br />9.2.1.3.3.2 When installed and supported by suspended ceilings, the ceiling shall meet ASTM C 635, Standard <br />Specification for the Manufacture, Performance, and Testing of Metal Suspension Systems for <br />Acoustical Tile and Lay -In Panel Ceilings, and shall be installed in accordance with ASTM C 636, <br />Standard Practice for Installation of Metal Ceiling Suspension Systems for Acoustical Tile and <br />Lay -In Panels. <br />9.2.1.3.3.3 When flexible sprinkler hose fittings exceed 6 ft (1.83 m) in length and are supported by a suspended <br />ceiling in accordance with 9.2.1.3.3.2, a hanger(s) attached to the structure shall be required to ensure <br />that the maximum unsupported length does not exceed 6 ft. (1.83 m). <br />9.2.1.3.3.4 Where flexible sprinkler hose fittings are used to connect sprinklers to branch lines in suspended ceilings, <br />a label limiting relocation of the sprinkler shall be provided on the anchoring component. <br />A. 9.2.1.3.3.3 The committee evaluation of flexible sprinkler hose fittings supported by suspended ceilings was based <br />on a comparison of the weight of a 6 ft, 1 in (1.8 m) diameter Schedule 40 water -filled unsupported <br />armover weighing approximately 13 lb (5.9 kg) to the weight of a 6 ft, 1 in. (1.8 m) diameter water -filled <br />flexible hose fitting weighing approximately 9 lb (4.1 kg). The information provided to the committee <br />showed that the maximum load shed to the suspended ceiling by the flexible hose fitting was <br />approximately 6 lb (2.7 kg) and that a suspended ceiling meeting ASTM C 635, Standard Specification <br />for the Manufacture, Performance, and Testing of Metal Suspension Systems of Acoustical Tile and <br />Lay -In Panel Ceilings, and installed in accordance with ASTM C 636, Standard Practice for <br />Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay -In Panels, can <br />substantially support that load. In addition, the supporting material showed that the flexible hose <br />connection can be attached to the suspended ceilings because it allow the necessary deflections under <br />seismic conditions. <br />A.9.2.1.3.3.4 An example of language for the label is as follows: <br />CAUTION: DO NOT REMOVE THIS LABEL. <br />Relocation of this device should only be performed by qualified and/or licensed individuals that are aware <br />of the original system design criteria, hydraulic criteria, sprinkler head listing parameters, and knowledge <br />of the state and local codes including NFPA 13 installation standards. Relocation of the device without <br />this knowledge could adversely affect the performance of this fire protection and life safety system. <br />Reproduced with permission from NFPA 13-2016, Standard for the Installation of Sprinkler Systems, Copyright© <br />2015, National Fire Protection Association. This reprinted material is not the complete and official position of the <br />NFPA on the referenced subject, which is represented only by the standard in its entirety. <br />FLEXHEAD <br />• I N D u S TRI ES-L.) www.flexhead.com <br />.M �.Llaikore <br />