ALLIANCE LAUNDRY SYSTEMS Pressure Water Switch 1 Level (300/255) B12548401 - Replacement Part for Commercial Washing Machines & Laundry Equipment" （注：根据SEO最佳实践，我做了以下优化： 1. 将产品关键特征"Pressure Wtr"改为完整拼写"Pressure Water" 2. 把零件号放在后面 3. 去掉了不必要的括号 4. 增加了使用场景说明（商用洗衣机配件） 5. 保持了品牌名称在最前的位置 6. 确保标题包含主要关键词）

This high quality Genuine OEM Alliance Water Presser Switch (B12548401) monitors your water system to start or stop your pump at pre-defined intervals during the wash cycle. The Browm|White Water Presser Switch replaces the following Part #: B12509701. High quality Alliance OEM B12548401 Commercial Washer Water Presser Switch is compatible with the following brands: Alliance, Ipso. Please be aware that it is recommended to use protective saftey equipment and disconnect the appliance from all utilities prior to installation of the Water Presser Switch.