These requirements cover pilot-operated pressure-control valves intended to reduce the water pressure in the supply piping for standpipe systems@ or sprinkler systems@ or both. The valves covered by these requirements are intended for use in: a) Standpipe systems installed in accordance with the Standard for Installation of Standpipe and Hose Systems@ NFPA 14; or b) Sprinkler systems installed in accordance with the Standard for Installation of Sprinkler Systems@ NFPA 13. The valves covered by these requirements are intended to be inspected@ tested@ and maintained in accordance with the Standard for the Inspection@ Testing@ and Maintenance of Water-Based Fire Protection Systems@ NFPA 25.
1739-2012由UL - UL 发布于 2012-06-07,并于 2013-12-17 实施。
非常抱歉,我们暂时无法提供预览,您可以试试: 免费下载 1739-2012 前三页,或者稍后再访问。
点击下载后,生成下载文件时间比较长,请耐心等待......
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号