Freezing oil feed pipe.

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I need to cut the pipe from the oil CH tank but there is no tap to stop the feed.
So I need to install one.
Any advice ?
 
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If you were confident of what you were doing and had a copper pipe you could cut it and snatch fit a valve!

But oil waxes at perhaps - 8 C and you could probably reduce to that temp with a mixture of salt and ice upstream of where you want to fit the valve!

Tony
 
Last edited:
Thanks Tony. I'm not confident with that. It's not my trade.

I could buy one of those pipe freezing kits ! What do you think ?
 
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I tried that and sucked up a load of bad oil from the tank. Had to get the boiler repaired afterwards.
Looks like I'll have to waste the oil.
There's a lot in it.
 
This might work. Use a vacuum cleaner to create a negative pressure in the oil tank. That might reduce the flow enough to make it possible to cut the pipe and immediately fit a stop valve without losing too much oil. Spillage must not be allowed to pollute the ground.

There is a risk that the motor in the vacuum cleaner could ignite the oil vapour that it is sucking out of the tank.
 
I thought of that idea but discounted it.
Pollution is my greatest fear. As well as causing a fireball in the neighbourhood and the resulting sky news embarrassment.
 
I'm wondering if there are companies who's job it is to drain and clean tanks and restore the oil afterwards. Perhaps this is the way to go. I could fit the stop valve during the process.
 
Fuel companies will bale out your tank in case of leakage.....I'd be very surprised if they would return clean fuel to you! Naturally there is a charge.
Can you drain the fuel off into clear plastic drums and let it settle for a while - eventually syphoning the clean stuff off?
At the same time, fit a tap and filter bowl for future use.
John :)
 
There are but you will not like their prices.

How much tube can you access and is it copper?

If I was asked to do it and the layout allowed, then I would squeeze it closed, cut it downstream of the squeeze, lift it up to above the tank level, cut the pipe, fit the valve and then reinstate.

Simple if the layout and materials suit.

Tony
 
That sounds like a good idea. I've got around 600L in there at present. I'm confident down to 200. I'll start saving jerry cans.

Fitting another filter sounds sensible too.
Where's the best place to buy it ?
 
The tank is about two / three metres above the height of the boiler. Which is located some distance away.
The pipe is copper, fed through tough green plastic. And its buried underground for the most part after the first mtr.
I could squeeze it off, but the rest looks tricky.
 
Another better solution would depend on the tank and be influenced by the state of the stuff at the bottom.

That is to virtually empty the tank down to the last 150 mm depth.

Then lift the tank 160mm on the outlet side until the oil level is below the outlet pipe connection.

Then fit an isolating valve virtually at the tank immediately followed by a filter and ideally a second valve just after the filter.

Then you will have your own access to the filter which you can clean as often as you like or as often as it gets blocked.

Tony Glazier
 
Is there an inspection hatch on the tank and if so can you see inside the tank where the pipe connects to the tank ?. If you can see the pipe opening then a soft rubber bung on the end of a rod could be placed over the opening to stop or reduce the flow when you cut the pipe. This method definately works with water in storage tanks with a mushroom shaped bung with the stalk into the pipe.
 
Thanks John. Your idea is a good one.
I'll syphon it off into plastic containers. That'll probably pick up the worst stuff first. Then I'll do what you said, and let it settle for a couple of hours at least.

Then do the valve and filter bowl and re-instate. Any idea where's best to buy the filter bowl. A heating co I guess !

I've heard about people getting oil stolen. Any views on this ?

Paul
 

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