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Distribution chamber vs inspection chamber


Roz

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I think the main difference is that an inspection chamber is basically a hole to look at the pipe going in and out of the chamber 

a distribution chamber will have one inlet AND an umber of outlet connections --usually 4 for the soakaway perforated hoses

so its fitted where the main grey water pipe meets the soakway field 

this is my understanding of it  

 

Edited by scottishjohn
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Between the septic tank and soakaway is usually a sample chamber,  one pipe enters, thre is usually a small drop and another pipe exits. the idea being SEPA / EA or whoever can drop a container in and take a sample of your effluent

 

Here is the first one I found doing a quick search. https://www.wplinternational.com/optional-extra/wpl-sample-chamber/

 

 

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This was what I found when looking, which just seemed expensive when compared to the inspection chambers!

https://www.drainagesuperstore.co.uk/product/underground-sampling-and-distribution-system-chamber-110mm.html

 

But then found this..

 

https://www.drainagesuperstore.co.uk/product/polylok-standard-4-hole-distribution-chamber-with-flat-cover.html

 

and i don't understand why the difference in price

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8 minutes ago, ProDave said:

Between the septic tank and soakaway is usually a sample chamber,  one pipe enters, thre is usually a small drop and another pipe exits. the idea being SEPA / EA or whoever can drop a container in and take a sample of your effluent

 

Here is the first one I found doing a quick search. https://www.wplinternational.com/optional-extra/wpl-sample-chamber/

 

 

how goes the 50mm pipe problem dave 

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24 minutes ago, Roz said:

This was what I found when looking, which just seemed expensive when compared to the inspection chambers!

https://www.drainagesuperstore.co.uk/product/underground-sampling-and-distribution-system-chamber-110mm.html

 

But then found this..

 

https://www.drainagesuperstore.co.uk/product/polylok-standard-4-hole-distribution-chamber-with-flat-cover.html

 

and i don't understand why the difference in price

It's the difference between a Trabant and a Rolls Royce. They both do the same thing, but the quality, and the price.

 

The cheap one does not look very deep to me, I am not sure it would have worked for us.  The treatment plant outlet was 700mm down and then another 100mm ore more step for the sample chamber, you will be looking at about a metre down.

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48 minutes ago, ProDave said:

It's the difference between a Trabant and a Rolls Royce. They both do the same thing, but the quality, and the price.

 

The cheap one does not look very deep to me, I am not sure it would have worked for us.  The treatment plant outlet was 700mm down and then another 100mm ore more step for the sample chamber, you will be looking at about a metre down.

I think ours is about that depth too. I might just ask the builder to sort out the distribution chamber from the merchant! 

Is non-woven geotextile the right option also by the way? It's more expensive than woven so wanted to check before I committed. 

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  • 5 months later...

I'm now at this stage but I have a 32mm MDPE feed to the sampling chamber as we have a pumped outlet. My thinking is just drill a hole in a normal inspection chamber sidewall to locate the MDPE and provide a easy to access sample point then use normal T connectors to branch the 110mm pipe out across the distribution field. 

 

Can anyone see an issue with this? 

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12 minutes ago, bissoejosh said:

I'm now at this stage but I have a 32mm MDPE feed to the sampling chamber as we have a pumped outlet. My thinking is just drill a hole in a normal inspection chamber sidewall to locate the MDPE and provide a easy to access sample point then use normal T connectors to branch the 110mm pipe out across the distribution field. 

 

Can anyone see an issue with this? 

If you have a pumped system, the holding tank with the pump is the sample point, or in our previous pumped system the sample point was in between the septic tank and the pumping chamber.

 

I have never seen a sample point installed in this location with a pumped system.

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13 minutes ago, ProDave said:

If you have a pumped system, the holding tank with the pump is the sample point, or in our previous pumped system the sample point was in between the septic tank and the pumping chamber.

 

I have never seen a sample point installed in this location with a pumped system.

That makes sense, I need to take a look in the treatment plant and see . I still need to drop the 32mm into 110mm for the drainage field though and this could double as an inspection point if needed. That is unless a fitting that converts 32mm MDPE to 110mm exists which I doubt.

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