Drips of Water from Pipe Next to Boiler?

[MartinR]

I have a small pipe (Picture below) just above my boiler that I noticed yesterday has had a few drips of water come out of it, it was a fairly rainy day so thought it may be related, however thinking about it it may have been dripping for months.

https://i.*********/7M5j6MD.jpg

Searching the internet the suggestions are this is a pipe where pressure is released if the tank upstairs has to much pressure in it?
I read I need to check my pressure gauge but I can not find one, checked boiler, tank upstairs and water tanks in loft.

As I am a complete novice I have no ideal what type of central heating system I have so no idea if I should have a pressure gauge or not, let alone any idea if this should or should not be dripping occasionally.

My home is a new build from 19 years ago, I have a boiler in the kitchen, a hot water tank upstairs and what looks like a big and a small water tank in the loft.

Please could anybody shed some light on what this drip from the pipe could be and what type of central heating system do I have?

Many thanks in advance for any replies.

Martin.

 

[Riley]

It’s a drain off cock for draining down the system

 

[Stu-B]

It looks like a drain off cock, I’d guess the rubber seal inside has corroded.

https://www.NoLinkingToThis/p/drain-cock-15mm/99939

A bit like this ^^

 

[Rob Foster]

As Riley says its an mt cock, in a very poor state. What you need to realise is that in side is a rubber washer which has perished. So dont fiddle with it
the end has a square post and can be turned but LEAVE alone
esp as its Sunday. If your knowledgeabke and confident tell us what you would do if not call a plumber tomorrow
Rob Foster aka centralheatking

 

[Aire]

By the sounds of it, you have a conventional open vented heating system with gravity fed hot water. You will not require a pressure gauge with this type of system. The valve in the picture is as Riley said, a drain off cock. Looking at it, it's been leaking a while, if your not confident yourself, call a plumber to come a change the washer.

 

[MartinR]

Many thanks for these fast and very helpful replies.
I have zero plumbing experience so on your advice I will not touch it and call an expert out.

Is this a costly job or a simple case of changing the drain cock do you think?

 

[Aire]

Many thanks for these fast and very helpful replies.
I have zero plumbing experience so on your advice I will not touch it and call an expert out.

Is this a costly job or a simple case of changing the drain cock do you think?

It can be really simple but depending how the plumber opts to drain down, it could end up been half a days job if the system airlocks or cold feeds blocked.

 

[Rob Foster]

Many thanks for these fast and very helpful replies.
I have zero plumbing experience so on your advice I will not touch it and call an expert out.

Is this a costly job or a simple case of changing the drain cock do you think?

As you state you have no choice and servicing the mt cock might well involve a drain down ...I know it looks very small but is a quite important component in the scheme of things .so a ..drain down , replace part, then refill and system bleed takes quite a while...the component costs me about £1.00
centralheatking

 

[firemant]

Okay, an apprentice question - although I am 43 years into this job: What does MT stand for ?

 

[Aire]

Okay, an apprentice question - although I am 43 years into this job: What does MT stand for ?

You may be able to find your answer here
MT