Vaillant Pressure Relief Safety Valve (Brass) 178985

OUT OF STOCK
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FROM £17.94
SKU:
N6751
Title
£17.94
Exc. VAT £14.95

Vaillant Pressure Relief Safety Valve (Brass) 178985

Product Overview

The Vaillant Pressure Relief Safety Valve (Brass) 178985 is a critical component designed for specific Vaillant heating systems. This Spare Part is a genuine replacement component engineered to restore original manufacturer specifications. properly functioning components are vital for the energy efficiency and safety of your boiler.

ℹ️ Product Condition Options:
This part may be available in New, Refurbished, or Compatible conditions. Please select your desired option from the dropdown menu above. All refurbished parts are professionally tested to ensure reliability.

Technical Insight & Common Failure Symptoms

Based on service data: Common UK boiler brands such as Vaillant, Ideal, Worcester and Baxi all have more obscure models and this is one of them Unlike the USA our What are the symptoms of a broken boiler safety valve? Warning signs: The main failure symptoms are: Constant water dripping; Opens and releases water/steam

Replacing this part often resolves the following issues:

  • Restores reliable system operation and eliminates fault codes.
  • Resolves specific failure symptoms such as component malfunction.
  • Ensures safety compliance and efficient boiler performance.

Compatibility

This part (MPN: 178985) is designed for models within the Vaillant range. Please strictly verify the part number against your boiler's technical manual before ordering to guarantee fitment.

Safety Advice: Boiler parts involve gas, water, and electricity. Installation must be carried out by a Gas Safe registered engineer.

This part fits the following boilers:

Fits Appliance(s)
GC No.
Vaillant Ecofit Pure 612 System VU 126/6-3 (H-GB)
41-694-03 (0010020395)
Vaillant Ecofit Pure 615 System VU 156/6-3 (H-GB)
41-694-04 (0010020396)
Vaillant Ecofit Pure 618 System VU 186/6-3 (H-GB)
41-694-05 (0010020397)
Vaillant Ecofit Pure 625 System VU 256/6-3 (H-GB)
41-694-06 (0010020398)
Vaillant Ecofit Pure 630 System VU 306/6-3 (H-GB)
41-694-07 (0010020399)
Vaillant Ecofit Pure 825 Combi VUW 256/6-3 (H-GB)
47-044-68
Vaillant Ecofit Pure 830 Combi VUW 306/6-3 (H-GB)
47-044-74
Vaillant Ecofit Pure 835 Combi VUW 356/6-3 (H-GB)
47-044-70
Vaillant Sustain 825 VUW 256/6-3 (H-GB)
47-044-71
Vaillant Sustain 830 VUW 306/6-3 (H-GB)
47-044-72
Vaillant Sustain 835 VUW 356/6-3 (H-GB)
47-044-73
Vaillant Ecotec Exclusive 835 VUW 356/5-7
47-044-66
Vaillant Ecotec Exclusive 843 VUW 436/5-7
47-044-67
Vaillant Ecotec Plus 612 VU 126/3-5 2005-2005
41-044-44
Vaillant Ecotec Plus 612 VU 126/3-5 R1 2005-2012
41-044-44 R1
Vaillant Ecotec Plus 612 VU 126/5-5 2012-2012
41-044-60
Vaillant Ecotec Plus 612 VU 126/5-5 A R4 2015 Onwards
41-044-78
Vaillant Ecotec Plus 612 VU 126/5-5 R 6 2017 Onwards
41-694-20 R6 (0010021828)
Vaillant Ecotec Plus 612 VU 126/5-5 R1 2012-2013
41-044-60 R1
Vaillant Ecotec Plus 612 VU 126/5-5 R2 2013-2015
41-044-60 R2
Vaillant Ecotec Plus 612 VU 126/5-5 R4 2015-2015
41-044-60 R4
Vaillant Ecotec Plus 612, 615, 618, 624, 630, 637
ECOTEC PLUS 612, 615, 618, 624, 630, 637
Vaillant Ecotec Plus 615 VU 156/3-5 2005-2005
41-044-45
Vaillant Ecotec Plus 615 VU 156/3-5 R1 2005-2012
41-044-45 R1
Vaillant Ecotec Plus 615 VU 156/5-5 2012-2012
41-044-61
Vaillant Ecotec Plus 615 VU 156/5-5 A R4 2015 Onwards
41-044-79
Vaillant Ecotec Plus 615 VU 156/5-5 R 6 2017 Onwards
41-694-21 R6 (0010021829)
Vaillant Ecotec Plus 615 VU 156/5-5 R1 2012-2013
41-044-61 R1
Vaillant Ecotec Plus 615 VU 156/5-5 R2 2013-2015
41-044-61 R2
Vaillant Ecotec Plus 615 VU 156/5-5 R4 2015-2015
41-044-61 R4
Vaillant Ecotec Plus 618 VU 186/3-5 2005-2005
41-044-46
Vaillant Ecotec Plus 618 VU 186/3-5 R1 2005-2012
41-044-46 R1
Vaillant Ecotec Plus 618 VU 186/5-5 2012-2012 LPG
41-044-66
Vaillant Ecotec Plus 618 VU 186/5-5 2012-2012 NG
41-044-62
Vaillant Ecotec Plus 618 VU 186/5-5 A R4 2015 Onwards LPG
41-044-81
Vaillant Ecotec Plus 618 VU 186/5-5 A R4 2015 Onwards NG
41-044-80
Vaillant Ecotec Plus 618 VU 186/5-5 R 6 2017 Onwards LPG
41-694-23 R6 (0010021831)
Vaillant Ecotec Plus 618 VU 186/5-5 R 6 2017 Onwards NG
41-694-22 R6 (0010021830)
Vaillant Ecotec Plus 618 VU 186/5-5 R1 2012-2013 LPG
41-044-66 R1
Vaillant Ecotec Plus 618 VU 186/5-5 R1 2012-2013 NG
41-044-62 R1
Vaillant Ecotec Plus 618 VU 186/5-5 R2 2013-2015 LPG
41-044-66 R2
Vaillant Ecotec Plus 618 VU 186/5-5 R2 2013-2015 NG
41-044-62 R2
Vaillant Ecotec Plus 618 VU 186/5-5 R4 2015-2015 LPG
41-044-66 R4
Vaillant Ecotec Plus 618 VU 186/5-5 R4 2015-2015 NG
41-044-62 R4
Vaillant Ecotec Plus 624 VU 246/3-5 2005-2005
41-044-47
Vaillant Ecotec Plus 624 VU 246/3-5 R1 2005-2012
41-044-47 R1
Vaillant Ecotec Plus 624 VU 246/5-5 2012-2012
41-044-63
Vaillant Ecotec Plus 624 VU 246/5-5 A R4 2015 Onwards
41-044-82
Vaillant Ecotec Plus 624 VU 246/5-5 R 6 2017 Onwards
41-694-24 R6 (0010021832)
Vaillant Ecotec Plus 624 VU 246/5-5 R1 2012-2013
41-044-63 R1
Vaillant Ecotec Plus 624 VU 246/5-5 R2 2013-2015
41-044-63 R2
Vaillant Ecotec Plus 624 VU 246/5-5 R4 2015-2015
41-044-63 R4
Vaillant Ecotec Plus 630 VU 306/3-5 2005-2005
41-044-48
Vaillant Ecotec Plus 630 VU 306/3-5 R1 2005-2012
41-044-48 R1
Vaillant Ecotec Plus 630 VU 306/5-5 2012-2012 LPG
41-044-67
Vaillant Ecotec Plus 630 VU 306/5-5 2012-2012 NG
41-044-64
Vaillant Ecotec Plus 630 VU 306/5-5 A R4 2015 Onwards LPG
41-044-84
Vaillant Ecotec Plus 630 VU 306/5-5 A R4 2015 Onwards NG
41-044-83
Vaillant Ecotec Plus 630 VU 306/5-5 R 6 2017 Onwards LPG
41-694-26 R6 (0010021834)
Vaillant Ecotec Plus 630 VU 306/5-5 R 6 2017 Onwards NG
41-694-25 R6 (0010021833)
Vaillant Ecotec Plus 630 VU 306/5-5 R1 2012-2013 LPG
41-044-67 R1
Vaillant Ecotec Plus 630 VU 306/5-5 R1 2012-2013 NG
41-044-64 R1
Vaillant Ecotec Plus 630 VU 306/5-5 R2 2013-2014 LPG
41-044-67 R2
Vaillant Ecotec Plus 630 VU 306/5-5 R2 2013-2014 NG
41-044-64 R2
Vaillant Ecotec Plus 630 VU 306/5-5 R4 2015-2015 LPG
41-044-67 R4
Vaillant Ecotec Plus 630 VU 306/5-5 R4 2015-2015 NG
41-044-64 R4
Vaillant Ecotec Plus 637 VU 376/3-5 R1 2006-2012
41-044-52
Vaillant Ecotec Plus 637 VU 376/5-5 2012-2012
41-044-65
Vaillant Ecotec Plus 637 VU 376/5-5 A R4 2015 Onwards
41-044-85
Vaillant Ecotec Plus 637 VU 376/5-5 R1 2012-2013
41-044-65 R1
Vaillant Ecotec Plus 637 VU 376/5-5 R2 2013-2014
41-044-65 R2
Vaillant Ecotec Plus 637 VU 376/5-5 R4 2015-2015
41-044-65 R4
Vaillant Ecotec Plus 637 VU 386/5-5 R 6 2017 Onwards
41-694-27 R6 (0010021835)
Vaillant Ecotec Plus 824 VUW 246/3-5 2005-2012
47-044-31
Vaillant Ecotec Plus 824 VUW 246/3-5 R1 2005-2011
47-044-31 R1
Vaillant Ecotec Plus 824 VUW 246/3-5 R3 2011-2012
47-044-31 R2
Vaillant Ecotec Plus 824 VUW 246/5-5 2012-2012
47-044-40
Vaillant Ecotec Plus 824 VUW 246/5-5 R1 2012-2013
47-044-40 R1
Vaillant Ecotec Plus 824 VUW 246/5-5 R2 2013-2015
47-044-40 R2
Vaillant Ecotec Plus 824 VUW 246/5-5 R4 2015-2015
47-044-40 R4
Vaillant Ecotec Plus 825 VUW 196/5-5 R6 2017 Onwards
47-044-83 R6 (0010021823)
Vaillant Ecotec Plus 825 VUW 256/5-5 R4 2015 Onwards
47-044-57
Vaillant Ecotec Plus 831 VUW 316/3-5 2005-2013
47-044-32
Vaillant Ecotec Plus 831 VUW 316/3-5 R1 2005-2011
47-044-32 R1
Vaillant Ecotec Plus 831 VUW 316/3-5 R3 2011-2012
47-044-32 R3
Vaillant Ecotec Plus 831 VUW 316/3-5 R5 2013-2013
47-044-32 R5
Vaillant Ecotec Plus 831 VUW 316/5-5 2012-2012 LPG
47-044-46
Vaillant Ecotec Plus 831 VUW 316/5-5 2012-2012 NG
47-044-41
Vaillant Ecotec Plus 831 VUW 316/5-5 R1 2012-2013 LPG
47-044-46 R1
Vaillant Ecotec Plus 831 VUW 316/5-5 R1 2012-2013 NG
47-044-41 R1
Vaillant Ecotec Plus 831 VUW 316/5-5 R2 2013-2015 LPG
47-044-46 R2
Vaillant Ecotec Plus 831 VUW 316/5-5 R2 2013-2015 NG
47-044-41 R2
Vaillant Ecotec Plus 831 VUW 316/5-5 R4 2015-2015 LPG
47-044-46 R4
Vaillant Ecotec Plus 831 VUW 316/5-5 R4 2015-2015 NG
47-044-41 R4
Vaillant Ecotec Plus 832 VUW 246/5-5 R6 2017 Onwards LPG
47-044-85 R6 (0010021825)
Vaillant Ecotec Plus 832 VUW 246/5-5 R6 2017 Onwards NG
47-044-84 R6 (0010021824)
Vaillant Ecotec Plus 832 VUW 326/5-5 R4 2015 Onwards
47-044-58
Vaillant Ecotec Plus 835 VUW 306/5-5 R6 2017 Onwards
47-044-82 R6 (0010021822)
Vaillant Ecotec Plus 835 VUW 356/5-5 R4 2015 Onwards
47-044-53
Vaillant Ecotec Plus 837 VUW 376/3-5 R1 2006-2011
47-044-33 R1
Vaillant Ecotec Plus 837 VUW 376/3-5 R3 2011-2012
47-044-33 R3
Vaillant Ecotec Plus 837 VUW 376/5-5 2012-2012
47-044-42
Vaillant Ecotec Plus 837 VUW 376/5-5 R1 2012-2013
47-044-42 R1
Vaillant Ecotec Plus 837 VUW 376/5-5 R2 2013-2014
47-044-42 R2
Vaillant Ecotec Plus 837 VUW 376/5-5 R4 2014-2015
47-044-42 R4
Vaillant Ecotec Plus 838 VUW 286/5-5 R6 2017 Onwards
47-044-86 R6 (0010021826)
Vaillant Ecotec Plus 838 VUW 386/5-5 R4 2015 Onwards
47-044-60
Vaillant Ecotec Plus 937 VUI 376/3-5 2006-2012
47-044-39
Vaillant Ecotec Plus 937 VUI 376/5-5 2012-2012
47-044-43
Vaillant Ecotec Plus 937 VUI 376/5-5 R1 2012-2013
47-044-43 R1
Vaillant Ecotec Plus 937 VUI 376/5-5 R2 2013-2014
47-044-43 R2
Vaillant Ecotec Plus 937 VUI 376/5-5 R4 2014-2015
47-044-43 R4
Vaillant Ecotec Plus 938 VUI 286/5-5 R6 2017 Onwards
47-044-87 R6 (0010021827)
Vaillant Ecotec Plus 938 VUI 386/5-5 R4 2015 Onwards
47-044-61 R4
Vaillant Ecotec Pro 22 VU 226/5-3 A R4 (For Guernsey/Jersey Only) Current Production
10018497
Vaillant Ecotec Pro 22 VU 226/5-3 R4 (For Guernsey/Jersey Only)
10015190
Vaillant Ecotec Pro 24 VUW 246/3-3 R1 2006-2008
47-044-36 R1
Vaillant Ecotec Pro 24 VUW 246/3-3 R2 2008-2012
47-044-36 R2
Vaillant Ecotec Pro 24 VUW 246/5-3 2012-2012
47-044-44
Vaillant Ecotec Pro 24 VUW 246/5-3 R1 2012-2013
47-044-44 R1
Vaillant Ecotec Pro 24 VUW 246/5-3 R2 2013-2015
47-044-44 R2
Vaillant Ecotec Pro 24 VUW 246/5-3 R4 (2015-2017)
47-044-54
Vaillant Ecotec Pro 24 VUW 246/5-3 R4 2015-2015
47-044-44 R4
Vaillant Ecotec Pro 28 VUW 286/3-3 R1 2005-2008
47-044-30 R1
Vaillant Ecotec Pro 28 VUW 286/3-3 R2 2008-2012
47-044-30 R2
Vaillant Ecotec Pro 28 VUW 286/5-3 2012-2012 LPG
47-044-47
Vaillant Ecotec Pro 28 VUW 286/5-3 2012-2012 NG
47-044-45
Vaillant Ecotec Pro 28 VUW 286/5-3 R1 2012-2013 LPG
47-044-47 R1
Vaillant Ecotec Pro 28 VUW 286/5-3 R1 2012-2013 NG
47-044-45 R1
Vaillant Ecotec Pro 28 VUW 286/5-3 R2 2013-2015 LPG
47-044-47 R2
Vaillant Ecotec Pro 28 VUW 286/5-3 R2 2013-2015 NG
47-044-45 R2
Vaillant Ecotec Pro 28 VUW 286/5-3 R4 2015 - 2017
47-044-55 (0010018495)
Vaillant Ecotec Pro 28 VUW 286/5-3 R4 2015 - 2017 LPG
47-044-56 (0010018496)
Vaillant Ecotec Pro 28 VUW 286/5-3 R4 2015-2015 LPG
47-044-47 R4
Vaillant Ecotec Pro 28 VUW 286/5-3 R4 2015-2015 NG
47-044-45 R4
Vaillant Ecotec Pro 30 VUW 306/5-3 R4 (2015 Onwards)
47-044-52
Vaillant Exclusive 627 VU 256/5-7
41-694-02
Vaillant Sustain 24 VUW 246/7-2
47-044-79
Vaillant Sustain 28 VUW 286/7-2
47-044-80
Vaillant Sustain 34 VUW 346/7-2
47-044-81
Vaillant VWZ MEH 61 2013 Onwards
20143590
Vaillant VWZ MWT 150 2013 Onwards
20143800
Vaillant Home Combi 25 -A
47-044-62
Vaillant Home Combi 30 -A
47-044-63
Vaillant Home Combi 35 -A
47-044-64
Vaillant Home System 12 -A
41-044-94
Vaillant Home System 15 -A
41-044-95
Vaillant Home System 18 -A
41-044-96
Vaillant Home System 25 -A
41-044-97

Delivery

Free next day UK delivery is available on orders over £50.

Orders placed before 3 PM are usually dispatched the same working day.

Delivery times may vary for remote areas, Highlands, islands, and non-mainland UK destinations.

If you need urgent delivery help, please contact our customer service team before placing your order.

All Orders First 30 Days:

You can return or cancel your orders for any reason at any time within 30 days of receipt. After 30 days, we reserve the right to charge a restocking fee or refuse the return.

Parts must be returned in the same condition and packaging as received, or we may deduct a percentage of the cost of the part.

A full refund or exchange will be agreed once the item(s) have been received and inspected to ensure they are unused and in their original packaging where applicable.

If the part is returned as faulty and is found to be working upon inspection, postage costs will be deducted from the refund.

Faulty Items After 30 Days:

All items come with a 1 year HTS warranty from the date of purchase. Warranty means HTS will repair or replace the item.

Refunds:

Our returns team will process your refund after we receive and check your items. Please allow up to 15 days for your refund to be processed.

The refund will be made to the original payment method used to place the order.

Contact Us:

For any queries, email us at returns@heatingtradesupplies.com or call +44 01912633708.

Customer Services
National Boiler Spares Ltd
Tyne View Terrace
Wallsend
Tyne and Wear
NE28 6SG

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