• 1. bottom drain valve: 底部放泄阀 | 底部排水阀 | 顶部放泄阀 | 底部放水阀
• 2. bottom m drain valve: 底部放泄阀
• 3. drain without bottom valve: 无底阀排水

• 1.After turning off the gas or electricity open the drain valve at the tank bottom.
  在关闭燃气或电源后可开启罐底的排水阀。
  dict.yoduao.com
• 2.Drain out 5 gallons of water from the drain valve at the bottom of the heater.
  从热水器底部的排污阀排出大约5加仑的水。
  dict.yoduao.com
• 3.A drain valve is located on the bottom of the tank.
  一个排放活门被安装在水箱底部。
  dict.yoduao.com

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