The 67K32 is a single-stage (SPST) switch

leak-proof fit when properly brazed into the liquid line

Simplified Installation: Factory-terminated connectors allow for a "plug-and-play" replacement

Direct Crossover Compatibility: Functions as the updated technical replacement for the discontinued SP20129 model

Resideo L6006A1012 Aquastat Controller 318820-201 The 67K32 is a single-stageThe Resideo L6006A1012 Aquastat Controller is a high performance immersion type temperature controller designed for hydronic heating systems. Engineered for versatility, this SPDT aquastat functions as a circulator control, high limit, or low limit regulator, making it a staple for commercial and residential boiler applications. It features a 3 8 inch x 2 7 8 inch copper sensing bulb that accurately monitors liquid temperatures within a 100F to 240F