🛠️ Model Compatibility Checker
Enter your appliance model code to instantly check if this product is compatible:
Vaillant Diverter Valve Body (252457)
The Vaillant Diverter Valve Body Assembly (Part No: 252457) is a complete, ruggedly engineered hydraulic distribution block manufactured specifically for Vaillant's iconic ThermoCOMPACT, TURBOmax Plus/Pro, ecoMAX, and early ecoTEC condensing and standard combination boiler ranges. Serving as the central intersection point for the appliance's primary water delivery, this structural housing holds the internal shifting gates and cartridge assemblies. When a domestic hot water demand is generated, the valve responds immediately to divert primary heated fluid away from the central heating loop and focus it directly into the secondary plate heat exchanger.
Cross-Circuit Fault Eradication: Corrects the prevalent system breakdown where primary central heating energy bleeds across damaged internal walls or seats into the radiator pipework during summer domestic tap use.
Durable Structural Casting: Built using industrial-grade, thermal-shock resistant materials to eliminate structural deformation, internal micro-leak tracking, and stress cracking under continuous operational pressure.
Streamlined Flow Pathing: Internal tracking gates are hydro-dynamically shaped to minimize physical flow resistance, optimizing water circulation speeds while cutting noise from localized system turbulence.
Flawless OEM Integration: Designed as a direct drop-in replacement housing that perfectly matches the factory union positions, ensuring a clean, watertight connection with the boiler's original pipework tail configuration.
Compatible Models:
VAILLANT AQUAPLUS VUI
VAILLANT ECOMAX 824/2 E-C
VAILLANT ECOMAX 828/2E
VAILLANT ECOMAX 835E
VAILLANT ECOTEC EXCLUSIVE 832
VAILLANT ECOTEC EXCLUSIVE 838
VAILLANT TURBOMAX PLUS 824E
VAILLANT TURBOMAX PLUS 828E
VAILLANT TURBOMAX PLUS 836E
VAILLANT TURBOMAX PLUS 837E
VAILLANT TURBOMAX PRO 24E
VAILLANT TURBOMAX PRO 28E
VAILLANT VUI 362-7
VAILLANT VUI 362-7 R3
VAILLANT VUW 242/2-3 R1
VAILLANT VUW 242/2-3 R2
VAILLANT VUW 242/2-3 R3
VAILLANT VUW 242/2-5 R1
VAILLANT VUW 242/2-5 R2
VAILLANT VUW 242/2-5 R3
VAILLANT VUW 242-3
VAILLANT VUW 242-5
VAILLANT VUW 246/2-C
VAILLANT VUW 282/2
VAILLANT VUW 282
VAILLANT VUW 326
VAILLANT VUW 356
VAILLANT VUW 362
VAILLANT VUW 386
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
A01214-01
