Vaillant ecoTEC Boiler Pressure Relief ValveThe Vaillant Pressure Relief Valve (part number 178985) is a high-quality replacement part designed to maintain safe pressure levels within Vaillant boilers. By relieving excess pressure, this essential component ensures your boiler operates smoothly and safely. This Vaillant boiler pressure relief valve is compatible with a wide range of models, making it a reliable choice for many heating systems.Each valve is brand new and comes with a 12-month warranty, offering peace of mind and long-lasting performance. You can also install a new Vaillant expansion vessel for you boiler long life PRV Compatibility ListThis Vaillant ecotec pressure relief valve fits a wide variety of Vaillant boiler models. Refer to the list below, where each model is displayed with its corresponding GC number for easy reference:Vaillant Ecofit Pure Series:Ecofit Pure 612 System VU 126/6-3 (H-GB) – 41-694-03 (0010020395)Ecofit Pure 615 System VU 156/6-3 (H-GB) – 41-694-04 (0010020396)Ecofit Pure 618 System VU 186/6-3 (H-GB) – 41-694-05 (0010020397)Ecofit Pure 625 System VU 256/6-3 (H-GB) – 41-694-06 (0010020398)Ecofit Pure 630 System VU 306/6-3 (H-GB) – 41-694-07 (0010020399)Vaillant Ecofit Pure Combi Series:Ecofit Pure 825 Combi VUW 256/6-3 (H-GB) – 47-044-68Ecofit Pure 830 Combi VUW 306/6-3 (H-GB) – 47-044-74Ecofit Pure 835 Combi VUW 356/6-3 (H-GB) – 47-044-70Vaillant Sustain Combi Series:Sustain 825 VUW 256/6-3 (H-GB) – 47-044-71Sustain 830 VUW 306/6-3 (H-GB) – 47-044-72Sustain 835 VUW 356/6-3 (H-GB) – 47-044-73Vaillant Ecotec Exclusive Series:Ecotec Exclusive 835 VUW 356/5-7 – 47-044-66Ecotec Exclusive 843 VUW 436/5-7 – 47-044-67Vaillant Ecotec Plus Series (from 2005 to current production)Ecotec Plus 612 Ecotec Plus 615 Ecotec Plus 618Ecotec Plus 624 Ecotec Plus 630 Ecotec Plus 637Vaillant Ecotec Pro Series (including LPG and NG models)Ecotec Pro 24Ecotec Pro 28 Ecotec Pro 30 Home Combi Series:Home Combi 25 -A – 47-044-62Home Combi 30 -A – 47-044-63Home Combi 35 -A – 47-044-64Note: For optimal performance and safety, always have a qualified Gas Safe engineer install or inspect this Vaillant ecoTEC pressure relief valve.ShippingOrders placed by 1:00 p.m. EST (Monday–Friday) are shipped the same day, with next-day delivery available (excluding weekends). Friday orders are delivered Monday unless Saturday delivery is selected at checkout.At Aspire Heating, your satisfaction is our priority. If your order does not meet your expectations, you can return it within 30 days. Please review our full return policy for more information.
