<https://www.thetfordmarine.com/zh-hans/product/%e8%bf%9b%e6%b0%b4%e9%80%9a%e9%a3%8e%e9%98%80/#webpage>
<http://schema.org/description>
"Tecma防虹吸进水气阀装在虹吸截断器上，用于防止原水在某些安装情况下出现回流。该产品由Tecma设计。"
<https://www.thetfordmarine.com/zh-hans/product/%E8%BF%9B%E6%B0%B4%E9%80%9A%E9%A3%8E%E9%98%80/>