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Plumbing Re-Fit

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Plumbing Re-Fit

Post by Admin on Sat Sep 24, 2011 3:28 am

Nightmare ... Sad

Neither the two inch or `1-1/2` inch 45 degree elbows will fit the 2 inch threaded pipe on the RBD ... or the 1-1/2 inch hosetail which can be screwed on to that Rolling Eyes

HELP !

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Re: Plumbing Re-Fit

Post by alank on Sat Sep 24, 2011 4:19 am

Sound like we need a picture, what size is the thread on the bd and is it male or female?

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Re: Plumbing Re-Fit

Post by Admin on Sat Sep 24, 2011 5:11 am

alank wrote:Sound like we need a picture, what size is the thread on the bd and is it male or female?

My usb Camera cable has gone walk about Alan Rolling Eyes

Ok the `Male` thread on the RBD is 2 and 1/4 inches od and the 1-1/2 inch 45 degree elbow bend is the same .... how come ?

The alleged 2 inch 45 degree bend measures 2 and 3-1/4 inches as does the pipework scratch is this some kind of `universal` make no sense measurement system please scratch

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Re: Plumbing Re-Fit

Post by alank on Sat Sep 24, 2011 8:06 am

It sounds like you need one of these to glue into your 45 deg bend http://www.1st-direct.com/234;-hex-nipple_details.htm.

If you measure the inside of 2" tube it should measure 2", the outside diameter will be bigger and the inside diameter of a 2" bend will also be bigger as it has to fit over the tube.

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Re: Plumbing Re-Fit

Post by Admin on Sat Sep 24, 2011 8:21 am

alank wrote:It sounds like you need one of these to glue into your 45 deg bend http://www.1st-direct.com/234;-hex-nipple_details.htm.

If you measure the inside of 2" tube it should measure 2", the outside diameter will be bigger and the inside diameter of a 2" bend will also be bigger as it has to fit over the tube.

The link isn`t working Alan .. and those on the website I can see are all male threaded > http://www.1st-direct.com/234;-hex-nipple_details.htm .... I need a 2 inch part which has internal female threads which fit over the top as you say .

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Re: Plumbing Re-Fit

Post by alank on Sat Sep 24, 2011 8:44 am


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Re: Plumbing Re-Fit

Post by Admin on Sat Sep 24, 2011 8:58 am

alank wrote:This should do it,
http://www.1st-direct.com/234;-socket-union_details.htm

Or a 2" nipple with 2" pipe socket on the other end. http://www.1st-direct.com/234;-plain-female-threaded-socket_details.htm


They look like they will fit the bill Sweetie ? BUT...

How vague the measurement descriptions are scratch

Product Information
2" pipe is approx
Internal diameter: 54mm
External diameter: 60mm
2" fittings
Internal diameter: 60mm
External diameter: 74mm

Do you have any similar I can compare the mm with ? and which would you recommend Alan ?

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Re: Plumbing Re-Fit

Post by DaveB on Sat Sep 24, 2011 5:46 pm

Mio

Is there not is a local plumbing/engineering/ Industrial / not domestic. nearby. We have a Crosslands ( not sure if they are national) nearby. they have sorted me out a few times for any fittings, which apear not standard. Just take in what you want to join together and they will do it. However I believe Alan has sorted it out for you, even though discriptions and photos are a bit vague. Best Regards Dave

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Re: Plumbing Re-Fit

Post by Admin on Sat Sep 24, 2011 7:19 pm

Thank`s for all the advice Guys.

The RBD Male thread is exactly 65mm od and the 2 inch 45 degree elbow bend is 64 mm id.

Whatever joins the two must be 65 mm female thread .... I didn`t know they varied.

These parts are much better quality than the kitchen pipework and joints I had here Guys ... I just need to get the order right over the phone.


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Re: Plumbing Re-Fit

Post by Admin on Sat Sep 24, 2011 8:01 pm

What about fitting a Fernco rubber boot over the threaded lip of the RBD .. and tightening it on the smooth pipe below the threads ?

I don`t like the idea of the jubilee clips under water but can tape these up if necessary.

I have several here like this > http://www.absolute-koi.com/prod689.html

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Re: Plumbing Re-Fit

Post by DaveB on Sat Sep 24, 2011 8:44 pm

Hi Mio

I don't see any reason why not,.Use electrical self amalgimated tape( made of rubber)http://www.screwfix.com/p/self-amalgamating-rubber-tape-19mm-x-10m/61749

This would cover the clips and ensure you havea watertight seal You could also use the tape over the thread or PTFE thread tape, either would suffice.

Best Regards Dave
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Re: Plumbing Re-Fit

Post by DaveB on Sat Sep 24, 2011 8:52 pm

DaveB wrote:Hi Mio

I don't see any reason why not,.Use electrical self amalgimated tape( made of rubber)



http://www.screwfix.com/p/self-amalgamating-rubber-tape-19mm-x-10m/61749

This would cover the clips and ensure you havea watertight seal You could also use the tape over the thread or PTFE thread tape on the thread,
Best Regards Dave
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Re: Plumbing Re-Fit

Post by Admin on Sat Sep 24, 2011 9:02 pm

Guys I found the `female` threaded fitting that came with the RBD ... BIG problem though Sad It will not fit into the 2 inch elbow which is 1 mm to tight..



Last edited by Admin on Sat Sep 24, 2011 10:15 pm; edited 1 time in total

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Re: Plumbing Re-Fit

Post by DaveB on Sat Sep 24, 2011 9:55 pm

Mio

I still have the same fitting in my bits & pieces box. However mine has been adapted to fit 1.5 inch Solvent weld pipe. The adaptor is solvent weld too. The adaptor came with the RBD. You will still have to get from 1.5 Solvent weld to fit your hose.

Can you solvent weld the hose into the adaptor? I understand some flxable hose can be glued into place. You could even silicon seal the hose into fitting or the adaptor depending upon the size of your hose.Just an idea. Hope you get sorted

Best Regards Dave
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Re: Plumbing Re-Fit

Post by Admin on Sat Sep 24, 2011 10:42 pm

What IF I fit the Fernco over the female threaded straight pipe ? then place a straight piece of two inch pipe into that then add the 45 degree elbow atop these.... IF that makes sense to you guys ?

If feasible ... how short a 2 inch pipe piece can I get away with ?

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Re: Plumbing Re-Fit

Post by DaveB on Sun Sep 25, 2011 1:08 am

Mio

I think I know what you are getting at and can,t see a problem , as long as everyhing is a nice tight fit. If the rubber is tight over the thread then all the better. use some silcon on everything just to make sure. Remember we are talking low pressures here so as long as it dosn,t fall of,f you should be ok. You just need enough pipe to take the clips. Use rubber tape as previously mentioned over clips or anything to protect the koi from damage. Best Regards Dave

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Re: Plumbing Re-Fit

Post by Admin on Sun Sep 25, 2011 2:19 am

DaveB wrote:Mio

I think I know what you are getting at and can,t see a problem , as long as everyhing is a nice tight fit. If the rubber is tight over the thread then all the better. use some silcon on everything just to make sure. Remember we are talking low pressures here so as long as it dosn,t fall of,f you should be ok. You just need enough pipe to take the clips. Use rubber tape as previously mentioned over clips or anything to protect the koi from damage. Best Regards Dave

I`m going to have to tweak the pipe length between the Fernco and 45 degree elbow Guys to ensure the `angle` isn`t to steep ...

At 4 ft away from the elbow it`s at 40 inches which is waaaaay to high a slope ... 33 would be better as the vat is only 30 inches high scratch

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Re: Plumbing Re-Fit

Post by Admin on Sun Sep 25, 2011 6:44 pm

Dave Smile

Assuming you have/had the Aquosis RBD ..... and the 90 degree elbow bend that came with it (which I can`t find atm Rolling Eyes ) does the 90 fit over that `female` thread in my picture do you know ?

Ideally if it does ??????? all I need is a 45 degree elbow that size ....

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Re: Plumbing Re-Fit

Post by DaveB on Sun Sep 25, 2011 6:59 pm

Mio

Unfortunately I can,t find mine either . Best Regards Dave

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Re: Plumbing Re-Fit

Post by Admin on Mon Sep 26, 2011 1:58 am

DaveB wrote:Mio

Unfortunately I can,t find mine either . Best Regards Dave

The Angle might not be too adrift now given the Show Vat is actually 33 inches high and not 30 which I assumed Rolling Eyes

I can either use the Fernco 90 sweep directly off the RBD Female threaded straight pipe or fit a straight Fernco .. a small piece of white pipe then glue this to the 45 degree elbow (see pics)

Your thoughts please Guys Very Happy





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Re: Plumbing Re-Fit

Post by DaveB on Mon Sep 26, 2011 4:03 am

What ever is the easiest to place/remove as I don,t think it matters regarding having horizontal pipe. So go with the least bends or obstructions. I can,t think of any other issues. best Regards dave

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Re: Plumbing Re-Fit

Post by Admin on Sat Oct 01, 2011 1:09 am

Trying to get the angle at the correct height is proving extremely difficult Guys Sad

HELP !

Should I simply bring the pipe to the surface from the RBD ? then run it to the Pump from there ?

This will mean two bends before the Pump .... will that seriously hamper the flow ?

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Re: Plumbing Re-Fit

Post by DaveB on Sat Oct 01, 2011 1:30 am

Mio Are you saying the pipe will be horizontal. There is always the possibility of an airlock. try to have a slight slope upwards towards the pump so easier to expell the air. What made you go with the ridgid pipe instead of the flexable?

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Re: Plumbing Re-Fit

Post by Admin on Sat Oct 01, 2011 1:45 am

DaveB wrote:Mio Are you saying the pipe will be horizontal. There is always the possibility of an airlock. try to have a slight slope upwards towards the pump so easier to expell the air. What made you go with the ridgid pipe instead of the flexable?

The Alfagoma 1.5 would not stay on there Dave and would not allow the pump enough flow ... 2 inch pipe is recommended by Aquosis but the 90 degree elbow bend is exclusive to Aquosis RBD and won`t fit regular pipework.

I`ve been cutting small pieces off the `white straight 2 inch` pipe trying to get the angle correct with the 45 degree 2inch elbow atop it but it is much to high still.

Do I need a longer piece of pipe or shorter ? scratch

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Re: Plumbing Re-Fit

Post by DaveB on Sat Oct 01, 2011 4:27 am

I can,t say without a photo/ drawing. Is it possible to make a template with wood a place a small piece in the template called a closer to finish, then cut your pipe to the size of the completed template. This is how pumping systems are made in the marine industry. Just an idea, hope it helps

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