Pressurised filtering of WVO

[greasemonkey]

Wow!, Just filtered 25 litres in less then 10 minutes. They way to go. Should have done it ages ago.
Bit of a lash up, and the odd leak here and there. At least now I've got something going, I can see where it needs to be improved.
I'll try and get some pics up tomorrow.

[nigelb]

What exactly are you doing GM?

Nige

[photoman290]

i need to do this with my waste oil for the burner. taking about 2 days to filter 25 ltr with a sock filter. have been offered a hydraulic pump from a wheelchair. will that work ok with a filter on the inlet side?

[Head Womble]

You don't want to be using a gear pump (hydraulic pump) for filtering oil, way too much pressure involved with a gear pump.

[greasemonkey]

What exactly are you doing GM?

Nige

I bought one of these pumps.
http://www.ebay.co.uk/itm/SAER-KF-1-3-BAR-HOME-BOOSTER-GARDEN-HOUSE-WATER-PUMP-240V-/271070282186?pt=UK_DIY_Materials_Plumbing_MJ&hash=item3f1d0c41ca#ht_810wt_885

And some 10 inch cartridge filters off Phil Davenport.

Nothing that hasn't been done before, just amazed at how good it is. So much quicker and easyer than gravity filtering.

Tip oil into one tank, strains through bed sheet. Pump through the filters, into conical tank.

Had two filters, 5 and 1 micron.

I've fitted a pressure release, using a gate valve, that returns the excess flow back into the inlet side. There is a pressure gauge on the one filter housing.

Can anyone remember the max operating pressure of the filter housings. I've gone no more than 1 bar, and get good flow with that, so have no desire to go any higher.

Do my best to get some pics up tomorrow, but I warn you, it aint pretty.

[K.H]

The housings are 6 bar,the filters themselves about 0.8 bar,although you can get some rated for 10 bar @21C,expensive tho

[greasemonkey]

Thanks Keith. I'll keep it below .8 bar then. There is plenty of flow at that. The pressure release works really well, nice and controllable.

[photoman290]

You don't want to be using a gear pump (hydraulic pump) for filtering oil, way too much pressure involved with a gear pump.

 i wondered what the suction side is like. i want to put the filter on the inlet side so i am not pumping crud thought the pump. i know the output side is going to be too high for the filter housing. i want to use this pump for filtering finished bio as well if it will work. i do have a B and q pump a CH pump and a spare tam 105. which sounds the best for filtering?

[Head Womble]

I'd use the TAM with the filters on the pressure side, it's how I had my filtering setup before I got into bio,
works well as long as the oil is strained before pumping.

[greasemonkey]

The thing is, yes a pump might be to much pressure, but loosing it back into the inlet, via a valve, seems to take almost all the pressure off the filters.

Putting Waste engine oil through a simple bed sheet filter should remove any bigger bits of muck, certainly enough for it not to be harmful to a 105, I would have thought.

I guess a gear pump may be designed to suck, but I suspect that a 105 would struggle to suck through a filter. I've just realised that have implied almost the exact opposite on a thread on the VOD. I'd better shut up.

[Glycer-rides]

Waste engine oil? Hope that was a typo!

[greasemonkey]

Waste engine oil for Photomans burner.

[Rotary-Motion]

What exactly are you doing GM?

Nige

I bought one of these pumps.
http://www.ebay.co.uk/itm/SAER-KF-1-3-BAR-HOME-BOOSTER-GARDEN-HOUSE-WATER-PUMP-240V-/271070282186?pt=UK_DIY_Materials_Plumbing_MJ&hash=item3f1d0c41ca#ht_810wt_885

crikey thats a nice pump, just like a tam for 25 notes, nice find

[greasemonkey]

What exactly are you doing GM?

Nige

I bought one of these pumps.
http://www.ebay.co.uk/itm/SAER-KF-1-3-BAR-HOME-BOOSTER-GARDEN-HOUSE-WATER-PUMP-240V-/271070282186?pt=UK_DIY_Materials_Plumbing_MJ&hash=item3f1d0c41ca#ht_810wt_885

crikey thats a nice pump, just like a tam for 25 notes, nice find

There was a dose of them. The ebay advert was put up on, um, another forum.............
Stock clearance, by the colour and smell, they could be ex MOD.

[Rotary-Motion]

yo GM

what filter inserts you useing? melt blown or spun wound? this weather you will find after many uses they block and will reach the 0.8 kieth mentions quickly, can help aid this by adding more filter a 80/50 wshable with j-cloth then 20/10/1 say, basically where im at, and before this 2 times bed sheet filter, you would be surprised what the second sheet catches.

they pump well on first few uses but after oil is in them and you get the night freeze it thickens them up

all this is depended on oil you get and how long you settle after your first bed sheet filter before pumping stage though.