NPT Thread

Cowboy7307 · Senior Member

NPT Thread

KFT · Guru

Plumbing supplies like Swan or Reece should have them

or you could try bummings/mitre10 etc

deverall11 · Guru

Bunnings also carry what you need. It is American thread because the inlet valve, like a few other things is Camec which is USA. I always carry a spare one.
Larry

elliemike · Guru

American National Pipe Thread, N.P.T

British Standard Pipe Thread, B.S.P. or B.S.P.T

You can get NPT to BSP adaptors. Try Bunnings, Blackwoods, Camec, or any plumbing supplier might point you in the right direction. Or maybe the Caravan Supplier can get you a unit with a BSP inlet.

Our Avan drain from the sink is an N.P.T. thread. Been meaning to change it to a BSP fitting since I bought the Avan. One of those Gunner Jobs.

Possum3 · Guru

They are commonly called 1 1/8" American. - It appears they are readily available only at Caravan part suppliers - Bunnings don't stock.

deverall11 · Guru

Possum3 wrote:
They are commonly called 1 1/8" American. - It appears they are readily available only at Caravan part suppliers - Bunnings don't stock.

Guess the one I bought at Bunnings must have been a rogue.

PeterD · Guru

deverall11 wrote:
Possum3 wrote:
They are commonly called 1 1/8" American. - It appears they are readily available only at Caravan part suppliers - Bunnings don't stock.
Guess the one I bought at Bunnings must have been a rogue.

Bunnings are like hoers draws, up and down. some times they have them others they don't.

If you need to mail order them - then try here - I use the second one down, I leave it in situ with the click on piece pointing to the rear of the van.

Olley46 · Guru

Jayco Dealers stock them.

Lance C

ShortNorth · Senior Member

After about a year and a half, my town water inlet connector started leaking badly - Avan install a plastic metric connector fitted with copious wraps of white plumbers tape. After a while the town water pressure finds 'little fissures' through the tape and start leaking badly down the side of the van.

Searched everywhere for the proper US imperial brass ones - of all places I found Avan at Loganholme (southern Brisbane) had them in stock - funny that - Avan won't put the correct connector on at build time, but do stock the correct one to fix your van after the warranty runs out - go figure !

elliemike · Guru

ShortNorth wrote:
After about a year and a half, my town water inlet connector started leaking badly - Avan install a plastic metric connector fitted with copious wraps of white plumbers tape. After a while the town water pressure finds 'little fissures' through the tape and start leaking badly down the side of the van.
Searched everywhere for the proper US imperial brass ones - of all places I found Avan at Loganholme (southern Brisbane) had them in stock - funny that - Avan won't put the correct connector on at build time, but do stock the correct one to fix your van after the warranty runs out - go figure !

I must have a look at mine, as I think from memory it is a "Compression Fitting" Thread tape is not needed.

Or maybe someone totally put the wrong fitting on, mismatched or parallel threads, and taped up.

-- Edited by elliemike on Saturday 11th of April 2015 12:11:55 PM

PeterD · Guru

ShortNorth wrote:
1. Avan install a plastic metric connector fitted with copious wraps of white plumbers tape.
2. Searched everywhere for the proper US imperial brass ones - of all places I found Avan at Loganholme (southern Brisbane) had them in stock - funny that - Avan won't put the correct connector on at build time, but do stock the correct one to fix your van after the warranty runs out - go figure !

1. Another idiot that does not understand how hose fittings work. The water seal in these fittings is by the soft washer in the bottom of the female fitting. All that plumbers tape that is used leads to grief. It's much better to carry spare washers than tape. You should be able to force fit a BSP (they are not metric) fitting into the NPT female and get a good seal if your washer is in good shape. However you should only do it once and leave it there.

I find that If I don't remove the tape that previous wackos have put on the tap thread I am likely to split my plastic fittings. I replace the washer every time I suffer a leak and thus do not have leaking problems without the tape.

2. I would say they got them in after having problems with a few vans.

laurieoz · Senior Member

Tape! -yes -I laugh to myself every time I stay in a caravan park, (not often) - every water tap has left over tape on it

ShortNorth · Senior Member

PeterD wrote:
ShortNorth wrote:
1. Avan install a plastic metric connector fitted with copious wraps of white plumbers tape.
2. Searched everywhere for the proper US imperial brass ones - of all places I found Avan at Loganholme (southern Brisbane) had them in stock - funny that - Avan won't put the correct connector on at build time, but do stock the correct one to fix your van after the warranty runs out - go figure !
1. Another idiot that does not understand how hose fittings work. The water seal in these fittings is by the soft washer in the bottom of the female fitting. All that plumbers tape that is used leads to grief. It's much better to carry spare washers than tape. You should be able to force fit a BSP (they are not metric) fitting into the NPT female and get a good seal if your washer is in good shape. However you should only do it once and leave it there.
I find that If I don't remove the tape that previous wackos have put on the tap thread I am likely to split my plastic fittings. I replace the washer every time I suffer a leak and thus do not have leaking problems without the tape.
2. I would say they got them in after having problems with a few vans.

Peter, we're not talking about the park site water taps with heaps of white tape on the tap thread (that's a given for every caravan park), we're talking about the town water inlet into the Avan.

Avan factory brute-force fitted a plastic metric (I've checked, yes it was a cheap metric garden fitting, not BSP) male into the female NPT socket, BUT, they did NOT fit a washer in the bottom of the female fitting, but used heaps of white tape to take up the pitch difference between threads, hence the leaks. I didn't stuff around with the connector myself, I took it down to the local Avan dealer - when their service guy unscrewed the leaky plastic connector, he said "yet another bloody plastic connector fitted without a washer" - once the correct US imperial brass fitting was put on, with NO white tape, and WITH the proper washer in place, then it all works as it is supposed to !

I'm not the idiot, I do understand how hose fittings work (having had a former career of 45+ years as a Building Services engineer), it's the sub-skilled casual sub-contractors that Avan employ to do their work, coupled with slack quality control - if Avan had supplied a correct and properly fitted connector in the first place the problem would not have eventuated.

PeterD · Guru

ShortNorth wrote:
1. Peter, we're not talking about the park site water taps with heaps of white tape on the tap thread (that's a given for every caravan park), we're talking about the town water inlet into the Avan.
2. Avan factory brute-force fitted a plastic metric (I've checked, yes it was a cheap metric garden fitting, not BSP) male into the female NPT socket, BUT, they did NOT fit a washer in the bottom of the female fitting, but used heaps of white tape to take up the pitch difference between threads, hence the leaks. I didn't stuff around with the connector myself, I took it down to the local Avan dealer - when their service guy unscrewed the leaky plastic connector, he said "yet another bloody plastic connector fitted without a washer" - once the correct US imperial brass fitting was put on, with NO white tape, and WITH the proper washer in place, then it all works as it is supposed to !
3. I'm not the idiot, I do understand how hose fittings work (having had a former career of 45+ years as a Building Services engineer), it's the sub-skilled casual sub-contractors that Avan employ to do their work, coupled with slack quality control - if Avan had supplied a correct and properly fitted connector in the first place the problem would not have eventuated.

1. My opening remarks were about the imported hose fitting inlet on your van. My second paragraph was a rant about those who use thread tape on park taps instead of renewing the washer in their tap fitting.

2. Where do you get these "cheap metric garden fittings?" I am yet to spot metric hose fittings in this country. The common garden fittings we have on our taps are BSP threads. The imported water inlet fittings are NPT (or perhaps more correctly GHT or "garden hose thread".) See this link.

when their service guy unscrewed the leaky plastic connector, he said "yet another bloody plastic connector fitted without a washer" If he had fitted a washer like the one that should have been in there he would have been able to force the BSP fitting into the inlet and it would have sealed OK. I have seen this done several times and they have not leaked. The problem is that if you go that way you can not keep removing and replacing them like you can if you use the correct mating NPT fitting.

3. There are no water inlet fittings available in this country that are available with BSP fittings. They all come with NPT threads. The fitting would have been supplied with a washer, the washer would have gone missing somewhere in the vans delivery cycle. I did not refer to you as an idiot. I was referring to those who use thread tape on tap fittings.

iana · Guru

TopCat · Veteran Member

Hi folks, I have never had any problem with my Spaceland van's water supply, however, I lost the cap at one stage probably due to a senior moment.
A week later, noticed no cap and used the capping which comes with a water container purchased a couple weeks beforehand. Fitted perfectly.
It was a 20ltr water container that I had to place a tap on and now I keep any more I buy "just in case" lol