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Domestic hot water and heating series: gas hot water boiler, vacuum hot water boiler, vertical atmospheric pressure hot water boiler, electric hot water boiler Factory use, high temperature steam: wns fuel gas steam boiler, szs water tube steam boiler, vertical steam boiler, electric steam boiler

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FANGKUAI is founded in 1998, which is a clean fuel boiler enterprise integrating R&D, manufacturing, sales and service. In the past 20 years of development and innovation, the company has grown into a global enterprise, and its products have been exported to more than 80 countries including Russia, Mongolia and Thailand, and have established long-lasting cooperative relations with local enterprises!

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Why is my vaillant boiler refill valve leaking MyBuilder

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Popular products


θrion Gas Fired Steam Boiler


Rated thermal efficiency: 100-104%

Fixed working pressure: ≤1.6MPa

Applicable fuel:natural gas etc.


Gas(oil) Fired Integrated Hot Water Boiler


Rated thermal efficiency:96-98%

Fixed working pressure:≤1.25MPa

Applicable fuel:Natural gas, light oil, etc.


H6 Gas Fired Hot Water Boiler


Rated thermal efficiency: 97.2-106%

Fixed working pressure:0.1MPa

Applicable fuel:Natural gas, etc.


T7 Vacuum Hot Water Boilerr


Rated thermal efficiency:≥105.5%

Fixed working pressure:-0.02MPa

Applicable fuel:Natural gas, etc.


V6 Gas Fired Hot Water Boiler


Rated thermal efficiency:97.2-104.4%

Fixed working pressure:1.0MPa

Applicable fuel:Natural gas, etc.


Electric Steam Boiler

Capacity:0.5-4.0 t/h

Rated thermal efficiency:98%

Fixed working pressure:≤1.25MPa

Applicable fuel:electric energy


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  • Why Is My Boiler Leaking? What You Should Do About It

    Jun 05, 2020 · Pressure Valve Leak. One of the most common causes of boiler leakage is the boiler pressure being too high. This high pressure means that water must be released from the boiler in order to alleviate the pressure and prevent the boiler unit from breaking. Therefore, if water is leaking from the pressure valve fault this is a safety precaution.Get Price

  • refilling my vaillant boiler | DIYnot Forums

    Why aren't even flat roofs made with a little slope? I have a bitumen roof and, although it is not leaking, it does have a bubble/lump. It is only about 4 years old. Should I be worried? Why is my vaillant boiler refill valve leaking. My boiler (vaillant) refill valve is leaking water constantly. Why is this and what needs to be done to fix it?Get Price

  • Boiler Pressure Relief Valve Leaking and What to Do

    Boiler Pressure Relief Valve Leaking and What to Do Get Price

  • Why is my boiler leaking water? - Boiler leak reason

    Jan 10, 2022 · Of the three types, water leaks are the most common across all varieties of boilers and there is usually a root cause that leads to a boiler leaking water. This is why it is important to get in touch with a Gas-Safe engineer to take a look and resolve the problem properly, rather than relying on short-term fixes, such as a boiler leak sealant.Get Price

  • 2022 Cost of Boiler | Installation & Replacement Cost

    New Boiler Costs. Installing a new boiler costs $5,747 on average with a typical range between $3,609 and $8,202.A standard efficiency model (80%-89% AFUE) runs an average of $3,000 to $6,000. High efficiency models (90%+ AFUE) cost $6,000 to $11,000. Of that, labor costs $1,000 to $2,500. The main cost factors you'll need to consider include brand, BTU needs, type of …Get Price

  • DIY replacement of my boiler's pressure release valve

    Sep 13, 2006 · My boiler's pressure release valve has started leaking continuously so I need to replace it. It leaks even when there's hardly enough pressure in the CH circuit to register on the pressure meter. My question is: can I replace this myself or do I need a CORGI-registered plumber to do it? I've found a replacement from gas for about £25.Get Price

  • Boiler Pressure Relief Valve Keeps Going Off- Why & How to Fix

    Dec 19, 2021 · Sometimes a deteriorated gasket part makes this problem. When you face this leaking problem, it will be the instant step to check the valve if there are any brittle pieces or dirt issues inside. Step 1: power off the boiler. Step 2: let the pressure out cold for two hours. Step 3: Lift the relief valve to come out the water inside.Get Price

  • Boiler keeps emptying of water. - Digital Spy

    Jan 13, 2011 · I have a Vaillant combi boiler which was installed two years ago. I'm in a council flat so fortunately don't have to pay for repairs but it also seems to mean that they only do a crappy job of fixing it when they come out. Every few weeks or so the boiler empties. They come out and refill it and the same thing happens again.Get Price

  • Why Is My Boiler Leaking Water? - Vaillant

    Why is my vaillant boiler refill valve leaking - MyBuilderGet Price

  • Leak from filling loop tap, combi boiler

    Jan 14, 2014 · Why would you "make sure that both taps are off (one at each end)" when these taps will be replaced when a new filling loop is fitted? The OP states that water leaked from the base of the tap, so replacing the removable flexi hose alone will not cure a leaking valve.Get Price

  • Common Vaillant boiler problems & fixes - Homecure Plumbers

    Nov 27, 2020 · Why does my Vaillant boiler keep turning off? There can be a number of reasons why your Vaillant boiler keeps turning off. It could be due to low water pressure, a faulty thermostat, a faulty water pump, air in the system or frozen condensate pipes. One of our engineers will be able to find the issue and quickly apply a solution for you.Get Price

  • Filling Lop Handle Leaking Baxi Boiler |

    Nov 14, 2018 · We have a Baxi avanta plus combi boiler and the feed loop is leaking on the boiler side tap. I plan to get a new loop on the way home but was wondering if my plan to replace it is sound. 1. Turn of the mains and run kitchen sink tap to drain the pipes. 2. Turn off the flow into the boiler (pipeGet Price

  • How To Fix A Boiler Diverter Valve - Vaillant

    A diverter valve is a mechanism in a combi boiler that opens or closes to direct hot water either to radiators or taps and showers. Diverter valves are not found in system or conventional boilers because the valve is only needed in boilers where water is heated on demand, whereas system and conventional boilers store hot water in a storage Get Price

  • vaillant diverter valve failure - Expert Boiler Repair

    Vaillant diverter valve failure. The diverter valve on Vaillant combi boilers is a bit of a weak point. The design of the diverter on the current ecoTEC models is essentially the same one they started out with on the TURBOmax and ecoMAX models. This design is based on a pin which moves in and out moving a small piston via a little motor.Get Price

  • vaillant boiler turning on heating

    solid radiator -> flashing radiator. Then turn the top dial about 3/4 round and leave it there. So decided to change my boiler and got a local gas engineer to install a vaillant BGet Price

  • Slight leak from combi boiler? - MyBuilder

    It is leaking due to the following reason 1. Bad manufacturing 2. Left/ stuck in open or closed position for to long (again poor quality) 3. Weight place on it 4. Could become brittle depending on weather conditions 5. Could have been bought faulty at the time of purchase. Answered 18th Oct 2019 Like 1 Liked by the question posterGet Price

  • Vaillant leaking prv - DIYnot Forums

    Sep 03, 2019 · After some advise pls. Noticed quite low pressure (0.6) on our vaillant ecotec combi boiler. Whilst at work, the wife stupidly turned the pressure relief valve anti-clockwise thinking it was the filler and the pressure dropped again. She turned it back tight and then found the correct filler loop screws.Get Price

  • Correct Pressure level for Vaillant ecotec - MyBuilder

    Aug 19, 2020 · 2. The Fill Valve Is Defective. This pressure reducing valve is designed to allow only 12psi into the boiler. If it is allowing the pressure to reach 30psi or higher, leaks can occur. To check if the fill valve is the problem, turn the boiler off, allow it to cool, drain some of the water until the pressure reaches 10psi.Get Price

  • Hot water supply boiler. Medical search. Frequent questions

    hot water supply boiler. Frequent questions. Medical Information SearchGet Price

  • Why Is My Boiler Leaking Water Vaillant

    Why is my vaillant boiler refill valve leaking - MyBuilder. It sounds like the filling loop is leaking. this is an isolation valve, they do tend to leak from the middle where you turn the valve on and off. The only Related Questions Hi. A new vaillant ecotec plus combi boiler was installed in my 3 bed house after having issues with. Learn MoreGet Price

  • F22 fault Vaillant ecoTec pro - HELP - Heating and boiler

    Feb 07, 2019 · It can be a boiler fault, (the boiler is leaking) or in an older boiler it maybe that the expansion vessel has failed. On a new boiler it is most likely caused by a leak on the central heating system. If you have to top the system up every few days or even once a week the leak really should be found and repaired.Get Price

  • Boiler won't repressurise - Screwfix Community Forum

    Jan 31, 2017 · I tried to refill it again, armed with more knowledge this time, by opening the two valves for the refilling loop. Nothing happens, you can hear the water fill the refilling loop but then nothing more. If I disconnect the refilling loop at the boiler end and open the valve, lots of cold water. Connected to the boiler. Nothing.Get Price

  • why is my ctopcock leaking - MyBuilder

    Jun 10, 2011 · Disconnect the filling loop (the braded pipe that puts the water into the boiler). Check to see if the water is coming from the boiler end of pipe or the mains. If boiler then the preasur valve seat has not sat down properly and just needs a burst of water (not tooo much) to re align it. If coming from the mains side just turn the valve of fully.Get Price

  • Why is bathtub drain leaking? - MyBuilder

    No, the pressure should be between 1 and 1.5 bar, don't panic though as your boiler has a pressure relief valve to safe gaurd your system, to lower the pressure, turn the heating system off and release water from one of the air vents on higher towel rail until the pressure is lowered, once done simply tighten the air vent and turn the heating on in order to circulate the system, don't …Get Price

  • Leaking filler loop valve on Vaillant Ecotec plus 831 boiler

    Sep 03, 2019 · 9. Country: My two year old ecotec 824 plus had/has exactly the same problem. The design of the built in filling loop is useless - there's a thin braided hose like standard filling loops, except thinner with odd sized threads on the ends and no easy way to remove it. The valves only need the very slightest leak to mean the pressure will creep Get Price

  • Vaillant Boiler Problems, Repair Advice & How to Fix

    Vaillant boiler warranty. Vaillant boilers come with between 2-5 years of parts and labour warranty as standard but many models can go beyond this when installed by a Vaillant advance installer. To help you find out even more, we've put together a complete guide to …Get Price

  • Plumbers in Brandon West, Brandon, Suffolk - local

    Replaced 8 radiator valve, 6 of them are leaking. Promised to fix the problem but never get the job done, now no answer the phone. expert engineers fit A-rated Worcester Bosch or Vaillant boilers. Our competitive prices include a boiler warranty & full system aftercare to include controls, pumps and radiators etc. and shower and boiler Get Price

  • My boiler keeps losing pressure - Advanced Heating & Plumbing

    Time needed: 30 minutes. 3 Steps to checking why your boiler keeps losing pressure. Re-pressurise. Locate the fill valve of your boiler and repressurise your boiler system to 1 Bar. This usually gets your system up and running again. Check for leaks. Check all radiator valves for leaks as well as underneath the boiler for any signs of water leaks.Get Price

  • Why Is My Boiler Losing Pressure? | Boiler Advice | Vaillant

    A leak from the appliance or on the system most commonly from radiator valves or system components. The circuit of pipes and radiators connected to the boiler system can corrode or loosen over time, eventually allowing water to escape the system and gradually decrease the boiler pressure as water is replaced with air.Get Price

  • How to refill boiler system after draining — Heating Help

    Open up the water feed fast fill and run water thru the system and out that hose into a sink, maintaining about 20 psi. I usually put a 5 gallon bucket in the sink and bury the hose into it so I can see when all the air is purged. Then you'll have to close the fast feed valve and open that new valve at the same time.Get Price

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