It attaches to a tube or pipe that goes down, ending close to the floor or a drain. This pipe keeps the hot water headed away from the boiler.

Absolutely! Fitting the wrong size valve to your boiler can be seriously bad news. Too big and it simply won’t hold pressure, too small and you’re at risk of major pressure build-up without adequate pressure release.

James Elston is our resident boiler replacement and heating expert here at Boiler Central. With over 20 years experience in the boiler installation industry, James ensures that he knows everything there is about our Gas Safe boiler installations, energy saving and home heating solutions. This can be from simply procuring the latest best combi boilers, to reviewing and ensuring that Boiler Central maintains the highest standards across our boiler installation company.

Boilerairrelief valve

Steam boilers: Generally found in factories, hospitals, and plants, steam boilers generate steam to produce power and heat.

PressureRelief Valve

There are different types of pressure relief valves, the most common for a household central heating system are spring-loaded relief valves.

The main valves work as above, while the pilot valves attach to the main line connecting to the main valve. Once the pressure level is exceeded the pilot valve opens to let the pressure out, causing the main valve to open.

Think your PRV valve is broken? Why not see if it’s more economical in the long run to invest in one of the best combi boilers?

Boilerpressurerelief valvereplacement

That’s where we come in. We’ve put together this guide on pressure relief valves, providing you with all the information you need. You’ll learn what a pressure relief valve is, how it works, what to look out for, and its benefits.

It’s important to have the release valve installed by a professional to ensure it works efficiently while keeping things safe.

Luckily most boilers would just lockout instead, however, you would have a boiler that doesn’t work at all in this case until fixed.

Pilot-operated safety valves are used for boilers with high flow rates and extreme pressure. They have main and pilot valves.

If you’ve got a boiler, it’s essential to know how the basics work. If something goes wrong on a Sunday night you might save yourself some serious repair costs if you know what to do in the meantime.

Whatever boiler you’re using, pressure relief valves are one of the most important safety components. So your boiler must have one in working condition, if not it may be time to consider a boiler replacement.

WattsBoiler Relief Valve

A boiler pressure relief valve has an inflow, once the pressure increases to a certain level the seat/seal pushes up the spindle/stem.

If you notice anything like this it’s best to call in a plumber to look at what’s going on. It may be tempting to open your boiler and have a look but you’re putting yourself at risk.

A PRV valve is an essential part of your boiler. Before they were around, a pressure build-up in your boiler was a very serious issue.

Boiler Relief Valve30 psi

This backflow preventer test kit is accurate to Plus/Minus 1% of full scale. It includes a gauge with color-coded valves and hoses, hose adapters, a shock cord, and a purge hose.

Domestic gas boilers: These are the ones you’ll know most about because they’re in most UK homes in all the main boiler types such as combi boilers, system boilers and regular boilers. These are what produce hot water for heating your home through the circulation of the hot water around your radiators.

Where is the pressurerelief valvelocated

Remember, the water is extremely hot, so if you go anywhere near it you’ll need rubber gloves. Additionally, if there is a substantial leak ensure there is somewhere for the water to go like a large bucket.

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Boiler relief valveleaking

The valves come in different sizes and types. That’s why it’s important to have a professional look at your system. Replacing pieces yourself can be dangerous, particularly when dealing with high-pressure boilers.

Boilerpressurerelief valvelocation

Ensuring that the boiler pressure is what is should be is vital, as boilers and central heating systems can become unsafe if the water pressure reaches a certain point. Without a boiler pressure relief valve, you may be at risk of boiler explosions and leaks.

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The valve opens when the boiler pressure gets too high and closes again once the water pressure releases to a safe level.

A pressure relief valve is used on a boiler to release pressure when the heating system reaches a certain level of pressurisation.

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Pressure in any form can be a disaster. It can damage your equipment and other systems in the home if you don’t realise something has gone wrong in time. That’s why every boiler needs to have a pressure relief valve.

The spindle/stem then pushes against the resistance of the pressure relief valve spring, which releases the water to the outflow.

You’ll know it’s time to replace your combi boiler pressure valve when your heating system can’t reach its maximum pressure, there is a leak, or the valve is going over the allotted pressure. This may also indicate a problem with your boiler’s expansion vessels.