The National Fire Protection Agency (NFPA) Guidelines require a confirming flow test to be conducted whenever a "main line" valve such as the shutoff valves or a backflow assembly have been operated.
美国国家防火协会(NFPA)指导原则要求对于主管线上运行的阀门,如关闭阀或防回流阀总成,必须进行流量测试。
The National Fire Protection Agency (NFPA) Guidelines require a confirming flow test to be conducted whenever a "main line" valve such as the shutoff valves or a backflow assembly have been operated.
美国国家防火协会(NFPA)指导原则要求对于主管线上运行的阀门,如关闭阀或防回流阀总成,必须进行流量测试。
应用推荐