Vaillant Diverter Valve 252457

Vaillant Diverter Valve (252457) The Vaillant Diverter Valve (Part No: 252457) is a premium, motor-driven hydraulic control assembly utilized across a wide range of Vaillant's generation-2 condensing and non-condensing combination boilers. Positioned within the primary water circuit, this motorized valve receives electronic commands from the main printed circuit board (PCB) to instantly shift a dynamic internal piston. By sealing off the central heating loop during hot water demand, it directs the full volume of primary heated water through the domestic plate heat exchanger, ensuring stable hot water delivery at the taps. Motorized Switching Control: Engineered for smooth, rapid electronic actuation to maximize the efficiency of domestic hot water delivery. Complete Assembly Solution: Replacing the entire structural valve resolves internal piston binding, bypass tracking, and structural housing wear caused by system debris or sludge. High-Grade Composite Build: Manufactured from advanced, heat-resistant composite materials to minimize mineral scaling, resist corrosion, and ensure longevity under continuous thermal shifts. Leak-Proof Port Isolation: Features heavy-duty internal seals designed to withstand intense system pressures and eliminate thermal bleed into the radiator network when operating in hot water mode. Compatible Models: Vaillant Aqua Plus VUI 362-7 (2002-2005) — 47-044-29 Vaillant Aqua Plus VUI 362-7 R3 (2005-2008) — 47-044-29 (306592) Vaillant Ecomax 824/2E VUW 246/2-C (2001-2007) — 47-044-12 Vaillant Ecomax 828/2E VUW 286/2-C (2001-2007) — 47-044-17 Vaillant Ecomax 835E VUW 356-C (2002-2008) — 47-044-27 Vaillant Ecotec Exclusive 832 VUW 32/4 (2007-2016) — 47-044-37 Vaillant Ecotec Exclusive 838 VUW 386/4 (2007-2016) — 47-044-38 Vaillant Turbomax Plus 824E VUW 242/2-5 (2001-2002) — 47-044-04 (2001-2002) Vaillant Turbomax Plus 824E VUW 242/2-5 R1 (2002-2003) — 47-044-04-R1 Vaillant Turbomax Plus 824E VUW 242/2-5 R2 (2003-2004) — 47-044-04-R2 Vaillant Turbomax Plus 824E VUW 242/2-5 R3 (2004-2008) — 47-044-04-R3 Vaillant Turbomax Plus 828E VUW 282/2-5 (2001-2002) — 47-044-09 (2001-2002) Vaillant Turbomax Plus 828E VUW 282/2-5 R1 (2002-2003) — 47-044-09-R1 Vaillant Turbomax Plus 828E VUW 282/2-5 R2 (2003-2004) — 47-044-09-R2 Vaillant Turbomax Plus 828E VUW 282/2-5 R3 (2004-2008) — 47-044-09-R3 Vaillant Turbomax Plus 837E VUW 362/2-5 (2002-2004) — 47-044-28 Vaillant Turbomax Plus 837E VUW 362/2-5 R3 (2004-2008) — 47-044-28 R3 Vaillant Turbomax Pro 24E VUW 242/2-3 (2001-2002) — 47-044-10 (2001-2002) Vaillant Turbomax Pro 24E VUW 242/2-3 R1 (2002-2003) — 47-044-10-R1 Vaillant Turbomax Pro 24E VUW 242/2-3 R2 (2003-2004) — 47-044-10-R2 Vaillant Turbomax Pro 24E VUW 242/2-3 R3 (2004-2008) — 47-044-10-R3 Vaillant Turbomax Pro 28E VUW 282/2-3 (2001-2002) — 47-044-11 (2001-2002) Vaillant Turbomax Pro 28E VUW 282/2-3 R1 (2002-2003) — 47-044-11-R1 Vaillant Turbomax Pro 28E VUW 282/2-3 R2 (2003-2004) — 47-044-11-R2 Vaillant Turbomax Pro 28E VUW 282/2-3 R3 (2004-2008) — 47-044-11-R3 VAILLANT AQUAPLUS VUI VAILLANT TURBOMAX PLUS 836E VAILLANT VUW 242-3 VAILLANT VUW 242-5 VAILLANT VUW 282 VAILLANT VUW 326 VAILLANT VUW 356 VAILLANT VUW 362 Vaillant A00820-01