Series 709dcda double check detector assemblies are designed exclusively for use in accordance with water authority containment requirements 系列709dcda双止回阀检测器总成专用于满足水主管部门的密封要求的应用场合。
Series 774dcda double check detector assemblies are designed for use in accordance with water utility non - health hazard containment requirements 系列747dcda双止回阀总成用于符合自来水公司非健康危害密封要求的应用场合。
Series 007dcda double check detector assemblies are designed exclusively for use in accordance with water utility authority on non - health hazard containment requirements 系列007dcda双止回阀检测总成专用于符合自来水主管部门非健康危害密封要求的应用场合。