127-2 (截止阀) / 1127-2 (角阀)
水位控制阀 - 两路流量（容器注入和排放）
（DN150及以上采用118-4R/6118-4R）
127-2 (Globe) / 1127-2 (Angle)
ALTITUDE VALVE - TWO WAY FLOW (TANK FILL & DISCHARGE)

　　具有自动注水提升容器或蓄水池水位的功能。供水压力大于静水头压力。当水位控制器感应到水位下降到预置设置点以下时，则阀门开启，开始对容器注水。当容器水头压力大于阀门进口压力时，阀门开启进行容器排放。
　　Provides automatic filling of elevated tanks or reservoirs. Supply pressure is greater than static head pressure. When the altitude control senses a drop in level below the predetermined set-point the valve opens to fill tank. The valve opens for tank discharge when tank head pressure is greater than valve inlet pressure.

　　注：
　　调节范围：5~20英尺
　　　　　　　10~75英尺
　　　　　　　50~200英尺
　　NOTE:
　　Adjustment range: 5-20 FT.
　　　　　　　　　　 10-75 FT.
　　　　　　　　　　 50-200 FT.

　　快速选型：阀门通径，管线口径，或者小一个等级。
　　QUICK SIZING: Valve size, line size or one size smaller.

需要考虑的因素
Points to consider:

• 参阅技术参数 - 流量表中所需流量的压降
  Refer to Engineering Data - Flow Capacity Chart Pressure drop at required flow
• 参阅技术参数 - 压降表
  Refer to Engineering Data - Pressure Drop Chart
• 进口压力与容器高度进行对比，已确定是否需要注水
  Inlet pressure vs. tank height to fill
• 如果要求阀门通径小于管线通径，请考虑ACV 6127-1
  咨询美国瓦茨ACV销售代表/工厂
  If valve size required is smaller than line size, consider ACV 6127-1
  Consult Watts ACV representative/factory

• 容器排放要求阀门进口（系统压力）比容器水头压力低2 psig
  Tank discharge flow requires valve inlet (system pressure) to be 2 psig less than tank head pressure
• 参阅技术参数 - 流量表中所需流量的压降
  Refer to Engineering Data - Flow Capacity Chart Pressure drop at required flow
• 参阅技术参数 - 压降表
  Refer to Engineering Data - Pressure Drop Chart
• 进口压力与容器高度进行对比，已确定是否需要注水
  Inlet pressure vs. tank height to fill
• 如果要求阀门通径小于管线通径，请考虑ACV 6127-2
  咨询美国瓦茨ACV销售代表/工厂
  If valve size required is smaller than line size, consider ACV 6127-2
  Consult Watts ACV representative/factory