Vaillant Diverter Valve 252457, 0020073799 designed for various Vaillant boilers. Turbomax Pro 28E VUW 282/2-3 R3 (2004-2008) – GC No: 47-044-11-R3. Turbomax Pro 28E VUW 282/2-3 R2 (2003-2004) – GC No: 47-044-11-R2.
eBay