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Author Topic: Yet another pumps thread  (Read 198223 times)

Offline Tony

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Re: Yet another pumps thread
« Reply #600 on: April 10, 2016, 12:24:44 PM »
Totally agree.  Water is probably worse for it!
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Offline julianf

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Re: Yet another pumps thread
« Reply #601 on: April 10, 2016, 06:03:59 PM »
Im sure that, on the occasions im stuck, and i use the mono to pump bio / glyc with the nitrile stator - well, i think that will be the death of mine.

In fairness, i always pump some veg through after, and leave it with veg inside it.
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Offline Julian

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Re: Yet another pumps thread
« Reply #602 on: April 10, 2016, 07:57:24 PM »
Quote from: julianf on April 10, 2016, 06:03:59 PM
Im sure that, on the occasions im stuck, and i use the mono to pump bio / glyc with the nitrile stator - well, i think that will be the death of mine.

In fairness, i always pump some veg through after, and leave it with veg inside it.

I think you'll be surprised how long it will last used that way.  When mine had a nitrile stator, I used to pump bio often and never purged it.  The only reason for replacing it was because I dead ended it and the stator flange tore.
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Offline Tony

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Re: Yet another pumps thread
« Reply #603 on: April 12, 2016, 11:22:33 PM »
Well, this is not looking good.  The stator arrived but I can't screw the rotor into it very far.  I assume this should be quite easy, so perhaps they have different pitches?
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Offline Julian

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Re: Yet another pumps thread
« Reply #604 on: April 12, 2016, 11:26:33 PM »
Oh! sounds a little worrying ... tried a bit of lub?

If rotor and stator are the same length it should be easy to count the "wobbles" to check the pitch.
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Offline Tony

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Re: Yet another pumps thread
« Reply #605 on: April 13, 2016, 11:01:48 PM »
Rotor has three bumps and stator four - bugger!
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Offline Julian

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Re: Yet another pumps thread
« Reply #606 on: April 13, 2016, 11:53:14 PM »
Clutching at straws possibly, but could a "bump" in the stator equate to a "dip" in the rotor?
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Offline Tony

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Re: Yet another pumps thread
« Reply #607 on: April 18, 2016, 10:59:23 AM »
A whole bunch of stators just came on eBay for the MM/ML, standard rubber and Hypalon.  Stock remaining, go grab 'em at this bargain price :)

http://www.ebay.co.uk/itm/MONO-PUMP-STATOR-MM-ML-RANGE-/301932384286
http://www.ebay.co.uk/itm/301932378353

Chemical compatibility chart

http://www.mossrubber.com/pdfs/Chem_Res.pdf

What is odd is that chart says that Hypalon is not oil resistant, which is the opposite of what I've read elsewhere - for example, these document say "Good" for animal and vegetable oils
http://robinsonrubber.com/pdfs/HypalonRubber.pdf
http://www.amesrubberonline.com/pdf/hypalon.pdf

Does anyone know what the standard stator material is?  Nitrile or EPDM?
« Last Edit: April 18, 2016, 02:23:07 PM by Tony »
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Offline Tony

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Re: Yet another pumps thread
« Reply #608 on: April 20, 2016, 01:14:06 PM »
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Offline Julian

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Re: Yet another pumps thread
« Reply #609 on: April 20, 2016, 09:02:35 PM »
I've got a ***** (can't find a collective noun for pumps ... answers on a postcard please) of Monos in the garage.  I'm very tempted at those prices to put in an order so at least one runs like new.

Same guy is also offering MM/ML mechanical seals at very reasonable price ... http://www.ebay.co.uk/itm/Mono-pump-MM-ML-type-mechanical-seal-/301934555183?hash=item464cb3b02f:g:U8kAAOSwIUNXFnTu 

Bet he used to work in the Mono stores!


My offerings for a collection of pumps are ...

A cavitation of pumps
A head of pumps
A leak of pumps

and on a more personal level ...

A Frank of pumps
and
A Heather of pumps
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Offline julianf

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Re: Yet another pumps thread
« Reply #610 on: April 20, 2016, 09:08:54 PM »
a shelf of pumps.

...if they were working, they wouldnt be on the shelf, would they?
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Offline Head Womble

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Re: Yet another pumps thread
« Reply #611 on: April 20, 2016, 10:55:22 PM »
my vote is a head of pumps.
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Offline oakwoodtv

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Re: Yet another pumps thread
« Reply #612 on: April 20, 2016, 11:00:43 PM »
A displacement of pumps.
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Offline Julian

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Re: Yet another pumps thread
« Reply #613 on: April 20, 2016, 11:22:10 PM »
Liking displacement.
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Offline GedsJeep

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Re: Yet another pumps thread
« Reply #614 on: April 20, 2016, 11:49:21 PM »
a squirt of pumps...
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