通径：DN15, DN20和DN25
Sizes: ¹/₂", ³/₄" and 1" (15, 20 and 25mm)

　　这种结构对于减压变化和在不大幅度增加压降的情况下保持最大可能的流量提供高度灵敏的反应能力。这种阀门成功地用于一些应用领域，如油管，检测装置，高压灭菌器，蒸汽餐桌，蒸汽熨斗，单个散热器，硫化设备，消毒器和工艺生产线。
　　This design offers highly sensitive response to reduced pressure changes and maintains fullest possible volume without appreciable reduced pressure drop. They are used successfully on applications such as oil lines, testing fixtures, autoclaves, steam tables, steam irons, single radiators, vulcanizers,
sterilizers, and process lines.
　　一种附加的、不需要额外成本的独特功能是“灵敏调节器”，有利于消除临界流产生的振动现象。
　　An exclusive, feature which has been added at no extra cost is a "sensitivity adjuster" which eliminates any vibrating condition which may arise from critical flow requirements.

型号
MODELS

特点
Features

• 通用的青铜、铸铁或不锈钢结构
  Versatile design in bronze, iron or stainless steel
• 在线可维修性
  In-Line Serviceability
• “灵敏的调节器”
  "Sensitivity Adjuster"

材质
MATERIALS

　　注：美国瓦茨产品的规格说明采用美国常用的单位，所采用近似的公制单位仅用于参考。如果需要准确的尺寸，请与美国瓦茨技术服务部门联系。美国瓦茨保留在没有预先通知的情况下，对产品设计、结构、规格或材料进行更改或改进权利，对于以前或以后销售的产品，美国瓦茨不承担因更改或改进所产生的任何责任。
　　NOTE: Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

基本结构功能
BASIC DESIGN FEATURES

　　** 当在152AT和252AT内采用特富隆阀瓣时，其最高工作温度在压力300 psi（21.09 bars）时为149^oC，在压力200 psi（14.06 bar）时为204^oC。
　　** When utilizing a teflon valve disc in the 152AT and 252AT, the maximum operating temperatures are 300^oF at 300 psi -(149^oC at 21.09 bar) and 400^oF at 200 psi -(204^oC at 14.06 bar).