通径：DN15 - DN20
Sizes ¹/₂" – ³/₄" (15 - 20mm)

　　系列252A工艺蒸汽压力调节阀适用于为减压变化提供高灵敏性的反应，在不提高减压压降的情况下，保持有可能达到的最大流量。这种调节阀特别适用于下面的应用，如油管，测试设备，高压蒸煮器，蒸汽餐桌，蒸汽熨斗，单个散热器，硫化装置，杀菌器和工艺生产线。系列252A配置灵敏的调节器，避免临界流量需求时可能产生的任何振动情况。
　　Series 252A Process Steam Pressure Regulators are designed to offer highly sensitive response to reduced pressure changes and maintain fullest possible volume without appreciable reduced pressure drop. These regulators are ideal for use on applications such as oil lines, testing fixtures, autoclaves, steam tables, steam irons, single radiators, vulcanizers, sterilizers and process lines. The series 252A features a sensitivity adjuster to eliminate any vibrating condition that may arise from critical flow requirements.

特点
Features

• 青铜阀体结构
  Bronze body construction
• 可在线维修
  Serviceable in line
• 标准配置包括灵敏的调节器
  Standard sensitivity adjuster

型号
Models

规格说明
Specifications

　　这种阀门应该采用青铜材质制造，其最大工作压力高达300psi。这种阀门应该配置灵敏的调节器，以避免出现振动的情况。这种阀门应该能够进行在线维修，配置不锈钢阀内件和过滤器。这种阀门应该是美国瓦茨调节阀公司系列252A。
　　Valve shall be manufactured out of bronze and have a maximum working pressure of up to 300psi. Valve shall feature a sensitivity adjuster to eliminate vibrating conditions. Valves shall be serviceable in line and have stainless steel trim and strainer. Valve shall be a Watts Regulator Company Series 252A.

材质
Materials

压力 - 温度
Pressure – Temperature

主要结构特征
Basic Design Feature

1. 调节弹簧，适用的减压范围为3 至 140 psi (.21 至 9.8 bars)
   Adjusting Springs for reduced pressure ranges between 3 and 140 psi (.21 and 9.8 bars)
2. 叠层金属隔膜
   Laminated Metal Diaphragm
3. 不锈钢阀瓣和阀杆引导（这种不锈钢阀内件是标准配置，不需要额外加价）。
   Stainless Steel Disc and Stem Guide (This stainless steel trim is standardly furnished at no extra cost)
4. 不锈钢过滤器网
   Stainless Steel Strainer Screen
5. 可更换不锈钢阀座和阀门阀瓣。**
   Replaceable Stainless Steel Seat and Valve Disc.**

　　** 在系列252AT上采用Teflon®（特氟隆）阀门阀瓣，在压力为300 psi (21 bars)时，最高工作温度为149^oC，而在压力为200 psi (14 bars)时，最高工作温度为204^oC。
　　** When utilizing a Teflon® valve disc in the 252AT, the maximum operating temperatures are 300^oF at 300psi (149^oC at 21 bars) and 400^oF at 200psi (204^oC at 14 bars).

　　Teflon®是美国杜邦公司的注册商标。
　　Teflon® is a registered tradename of E.I. duPont deNemours Co., Inc.

　　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。
　　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.