一、特点及用途
该产品是采用美国马克（Mark）公司技术生产制造的，产品体积小、结构简单紧凑、90°回转开关迅速、操作扭矩小、密封无泄漏、调节性能好、寿命长且易拆装、选择不同零部件材质可适用多种介质，因此广泛用于石油、化工、食品、医药、轻纺、造纸、水电、船舶、供排水、冶炼和能源等系统管路上，可在各种腐蚀性、非腐蚀性气体、液体、半流体及固体粉末管线和容器上作调节和截流设备使用。
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