Weeping HW cylinder connection

[It's not Rocket Science..]

Having recently replaced my hot water tank, the bottom connection into the tank is weepeing. I remade the connection twice this weekend, using Gas PTFE tape but to no avail - if anything it has got slightly worse.

I have some thread selant that I bought from homebase, which is to be the next thing to try. Should I try this on it's own or with some PTFE tape for good measure ?

My flat is the bottom of a bolck of three stories, so I have ~ 10m head.

Matt

 

[hi-spec plumbing heating]

is it a standard indirect cylinder ?

 

[AlanE]

You are better using original water PTFE tape rather than the gas variety.

However if the thread you are refering to is PTFE thread then I would use that as I find it better than the tape.

Oh and only use one method to seal, tape or thread NOT both.

 

[It's not Rocket Science..]

is it a standard indirect cylinder ?

Yes, it's a standard indirect cylinder (Manco, i think, grade 3 so rated for 10m head)

You are better using original water PTFE tape rather than the gas variety.

I was previously advised to use Gas tape as being a bit thicker it should create a better seal.

Oh, and I forgot to mention, that the 90 degree compression fitting is not done up tight against the fitting on the tank as it ends up pointing the wrong way. following advice I kept on adding PTFE tape until the fitting goes tight (with a 30" spanner) when pointing in the right direction

Oh and only use one method to seal, tape or thread NOT both.

ok - one it is.

Matt

 

[hi-spec plumbing heating]

for these fittings

http://www.screwfix.com/search.do;j...CSTHZOSFFI?_dyncharset=UTF-8&fh_search=88160#

just use jointing paste noptfe on these joints.

and these

http://www.screwfix.com/search.do;j...YCSTHZOSFFI?_dyncharset=UTF-8&fh_search=10694

ptfe or thread seler/ liquid ptfe.

 

[It's not Rocket Science..]

The fitting I have is one of these (but in 22mm not 15) :

http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=100122&ts=41470&id=14890

So, thread sealer it is then. Is any product better than the rest, or are they all much the same?

Matt

 

[hi-spec plumbing heating]

i use alot of the time but all quite good.

http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=100136&ts=65394&id=30469