關於「Alco expansion valve」標籤，搜尋引擎有相關的訊息討論：

Thermo Expansion Valves | Copeland GBwww.copeland.com › refrigeration › mechanical-controlsAlco Controls Thermal Expansion Valves – Page 17 - Liberty Supplylibertysupply.com › ... › Thermal Expansion ValvesEmerson (Alco) Ti Series Thermo-Expansion Valvecnaucoasis.en.made-in-chi