KSB防火蝶阀

适用于高达16bar的工作压力，阀门的可选范围为dn40到dn300。FM的缩写代表Factory Mutual，是工业和建筑服务中消防应用的一套国际要求。消防系统对阀门构成了挑战，因为管道可以在阀门未启动的情况下承受全压达一两年之久。单侧负荷对蝶阀衬垫的下游方向施加压力。如果弹性体质量不足，可能会导致泄漏。KSB的设计和使用的衬管质量确保衬管在压力下不会移动，从而提供永久和持久的密封性。球型机械加工的阀瓣和衬垫，相应地成型，使得阀杆通道的关闭非常紧密。这种设计原理可以防止阀杆与流体接触。弹性体衬套还可以在法兰连接处提供密封，无需额外的垫圈。为了实现防喷阀杆和阀板之间的动力传输，工程师们选择了正连接。 The valve is actuated by a manual gearbox which is painted in red, too. A yellow flag of 100 x 100 mm, which is also visible from a distance, indicates if the butterfly valve is open or closed. A chain fastened to the gearbox prevents unauthorised actuation of the handwheel, and a locating device ensures that the manual gearbox is mounted in the correct position. As an option, the gearbox can be fitted with two internal limit switches. The new BOAX-B FM valves satisfy the safety requirements of Annex 1 of the European Pressure Equipment Directive 97/23/EC. The flange connections comply with the EN, ISO and ASME standards.

图:新型BOAX-B FM阀门满足FM对工业和建筑消防应用阀门的严格要求。(图片来源:KSB Aktiengesellschaft)