UL 312-2004 标准详情
- 标准号:UL 312-2004
- 中文标题:防火用切断阀
- 英文标题:standard for check valves for fire-protection service
- 标准类别:美国保险商实验室标准UL
- 发布日期:2004-01-08
1 SCOPE1.1 THESE REQUIREMENTS COVER CHECK VALVES OF 1-INCH NOMINAL SIZE AND LARGER, USED IN PIPING SYSTEMS SUPPLYING WATER FOR FIRE PROTECTION SERVICE. 1.2 THE CHECK VALVES COVERED BY THESE REQUIREMENTS ARE INTENDED FOR INSTALLATION AND USE IN ACCORD
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