[g.brookes]

Afternoon chaps.  Just wondering what you do to stop the leaks? I have just fitted metal hoselock adapters to put on the in/out bits of my vessel. I am still getting leaks from between the hoselock and the plastic thread bit that sticks into the lid of the DI.  It is all wound up with PTFE tape but is still leaking, giving me a constant drip in the van.
Any one got ay fool proof ways of stopping this leaking, or perhaps even a certain type of 'leak free' lid to screw on top of my standard blue vessel?

[Alex Gardiner]

Afternoon chaps.  Just wondering what you do to stop the leaks? I have just fitted metal hoselock adapters to put on the in/out bits of my vessel. I am still getting leaks from between the hoselock and the plastic thread bit that sticks into the lid of the DI.  It is all wound up with PTFE tape but is still leaking, giving me a constant drip in the van.
Any one got ay fool proof ways of stopping this leaking, or perhaps even a certain type of 'leak free' lid to screw on top of my standard blue vessel?

Is this a new DI vessel? If it is an older one it may be that the female plastic threads on the head have become worn or chewed up. When screwing in metal threads into plastic threads it is very important not to cross thread them.

When using metal threads wrap PTFE tape generously around the thread, but not over the first 3mm of the thread. This will then allow you to properly start the the thread off in the head before the PTFE bulks it out.

[Perfect Windows]

If PTFE tape isn't sealing OK once you've tried Alex's method, try jointing compound, such as

http://www.screwfix.com/p/fernox-hawk-white-jointing-compound-400g/69694

Not found a joint yet that can't be sealed with it.

Vin

[g.brookes]

thanks for both your advice.  The vessel which ios leaking the most is about 4 years old.  I have covered them in ptfe tape but i will take off the first 3mm, and if that doesnt work i'll have a look at your idea vin.  thanks very much

[dannymack]

Just buy new one, come on Brooks were window cleaners on £500 a day don't be a tight ass lol !!!

[g.brookes]

Old question but still not solved.  Ive bought the jointing compound but my question is, the leaking I'm getting is also between the female metal hose lock connectors and the male plastic thread on top of the di vessels.  Can i use the jointing compound on something where i take the connection apart frequently, or is it just for connection that stay put?

[Perfect Windows]

Old question but still not solved.  Ive bought the jointing compound but my question is, the leaking I'm getting is also between the female metal hose lock connectors and the male plastic thread on top of the di vessels.  Can i use the jointing compound on something where i take the connection apart frequently, or is it just for connection that stay put?

Any chance you could pop a photo of your setup on here?  I'm a little bit mystified as to what's going where.

Vin

[ChumBucket]

Metal fittings are the worst IMO for leaking. After over ten years with DI vessels I find B&Q's own cheaper brand (the blue ones at £1 each) to be the best leak free fittings out there!

If you are screwing male parts into a female DI head unit, as has been said, bulk the threads out with PTFE. You need about ten wraps, one or two is no good. Wrap them till it looks like you've put too much on.

Also replace the rubber O rings on the male parts regularly, you can buy them for peanuts on ebay.

[Dave Willis]

Why would you put an o ring round a peanut 

[ChumBucket]

Why would you put an o ring round a peanut 

Berk!!

[Mist A Bit]

3/4 male to male thread brass ptfe tape with washing machine hose on the end of that, screws on to that thread with a perfect perminant leak free life, mine has never dribbled a drop in 3 years, i do this on every fitting on di`s pre filters, ro gas heater, pump the lot, bone dry in van all the time

[windowswashed]

I fitted NITO metal fittings to DI containers with PTFE taped on threads, never leaked once.