通径：DN15 - DN65
Sizes: ¹/₂" – 2¹/₂" (15 – 65mm)

　　系列223和223S超容量水减压阀适用于以可以感受到的幅度降低进口水压，以保护管道系统部件，减少水损耗。这个系列适用于水供应压力高达300psi (21 bars)，可调节范围为25 – 75psi (172 – 517kPa)。标准设置是50psi (345kPa)。系列223配置一个加大隔膜，弹簧笼和阀座节流孔，具有超容量性能。系列223S除了配置一个过滤器以外，其它具有与系列223相同的选项。所有部件都能够迅速和容易的维修，不需要从管线上拆卸阀门。作为选项的旁路功能，当阀门出口端出现热膨胀，压力超过主阀门的压力时，使得水流可以通过阀门回到主阀内。
　　Series 223 and 223S Super Capacity Water Pressure Reducing Valves are designed to reduce incoming water pressure to a sensible level to protect plumbing system components and reduce water consumption. This series is suitable for water supply pressures up to 300psi (21 bars) and may be adjusted from 25 – 75psi (172 – 517kPa). The standard setting is 50psi (345kPa). Series 223 features an enlarged diaphragm, spring cage and seat orifice for super capacity performance. Series 223S has the same options as the 223, except it is furnished with a strainer. All parts are quickly and easily serviceable without removing the valve from the line. The optional bypass feature permits the flow of water back through the valve into the main when pressures, due to thermal expansion on the outlet side of the valve, exceed the pressure in the main.

特点
Features

• 加大隔膜，弹簧笼和阀座节流孔，具有超容量性能
  Enlarged diaphragm, spring cage and seat orifice for super capacity performance
• 青铜阀体结构（DN除外，它是铸铁阀体结构）
  Bronze body construction (except 2¹/₂" which is iron)
• 可在线维修
  Serviceable in line
• 系列223S配置独立的过滤器
  Series 223S furnished with separate strainer
• 选项旁路具有控制热膨胀压力的功能**
  Optional bypass feature controls thermal expansion pressure**
• 在所有型号上都配置密封弹簧笼，适用于供水系统深坑安装
  Sealed spring cage on all models for waterworks pit installations

型号
Models

　　要了解DN65 - DN80青铜螺纹阀门，请参阅样本ES-N223B
　　要了解DN80法兰结构，请参阅样本ES-N223F。
　　For 2¹/₂" – 3" (65 – 80mm) bronze threaded valves, refer to literature ES-N223B.
　　For 3" (80mm) flanged connections, refer to literature ES-N223F.

规格说明
Specifications

　　如果主管线供应压力超过60psi (413 kPa)，需要降低到50psi (345 kPa)或更低，则应该在靠近建筑物主供水管线的进口处的供水管线上安装一个水减压阀。根据用户的选择，洒水龙头和外墙消防栓可以保留完全的主管压力。当阀门出口端出现热膨胀，压力超过主阀门的压力时，应该采取措施使得水流可以通过环绕阀门的旁路回到主阀内。配置内置旁路止回阀和过滤器的减压阀是可以接受的。通过认证的阀门应该符合美国安全工程师协会ASSE 1003的标准。这种阀门应该是美国瓦茨调节阀公司系列223或223S（带过滤器）。
　　A Water Pressure Reducing Valve shall be installed on the water service pipe near its entrance to the building where supply main pressure exceeds 60psi (413 kPa) to reduce it to 50psi (345 kPa) or lower. Sill cocks and outside wall hydrants may be left on full main pressure at the option of the owner. Provision shall be made to permit the bypass flow of water around the valve back into the main when pressures, due to thermal expansion on the outlet side of the valve, exceed the pressure in the main. Pressure reducing valves with built-in bypass check valves and strainer will be acceptable. Approved valves shall comply with ASSE 1003. Valve shall be a Watts Regulator Company Series 223 or 223S (with strainer).

223S

1. 抗高温隔膜，适用于热水或冷水。
   High temperature resisting diaphragm for hot or cold water.
2. 大型不锈钢过滤板的过滤网
   Large stainless steel perforated strainer screen.
3. 阀瓣支架可以拆卸，便于在不拆卸阀门的情况下更换阀瓣，不需要特殊工具。
   Disc holder removable for replacement of disc without dismantling the valve — no special tools required.
4. 密封的弹簧笼
   Sealed spring cage
5. 灵敏的弹簧和大型隔膜面，适用于精确压力控制
   Sensitive spring and large diaphragm area for accurate pressure control
6. 青铜阀体结构，DN15 - DN50
   Bronze body construction ¹/₂" – 2"
7. 可更换不锈钢阀座
   Replaceable stainless seat

　　*水节约测试程序结果证明，将供应压力从80-50psi (551-346kPa)降低下来，可以节约30%的水。
　　**如果进口压力高于150psi (10.34 bars)，则旁路将不起作用。
　　*A water saving test program concluded that reducing the supply pressure from 80-50psi (551-346kPa) resulted in a water savings of 30%.
　　**Bypass will not work if inlet pressure is above 150psi (10.34 bars).

　　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.