Mono pump in action

[Tony]

Thank you Julian, that is just the ticket!  There's a Screwfix right by where I work so I'll go pick that up tomorrow.  Includes jubilee clips too, bargain

[julianf]

Includes jubilee clips too

IIRC they were especially bad...

[Tony]

The best clips I've ever bought were stainless ones from a Chandlers, but they were a quid a pop. I'm not surprised the Screwfix ones aren't great...

[julianf]

Those T-bolt clips are about £12 for 10-off from ebay.

I can get nice stainless ones from a military surplus warehouse near here for pretty cheap (i think about 30p each?) but, by the time theyre posted, i dont think it would be worth it?

[Glycer-rides]

Includes jubilee clips too

IIRC they were especially bad...

I won't be buying any more stainless ones from BES.
The slightest whiff of a 'torque' and they slip.
Elastic bands out perform them.

[julianf]

The ones i got from the ex-mod place were the type that the band actually has holes in it, rather than the type where the band is just bumpy.

If im feeling especially enthusiastic, ill get the camera on them tomorrow.

[greasemonkey]

Are these mono pumps the ones with like a shaft with a spiral on it the fits into a rubber, inside a housing on the end of the pump? Some where on here there is a picture of one, and it looks very similar to one i have kicking about in the shed. I had it apart one day to see how it worked. Ancient thing, with a heck of a weight in it.
I guess they are ok for oil, but I would have thought bio might destroy the rubber.

[julianf]

spot on -

the stator is the rubber bit
the rotor is the worm bit that, well, rotates

bio would kill the rubber, unless you were flash, like the other julian, and splashed out on a viton stator.

[julianf]

theyre actually called -

progressive cavity pumps


mono is just a brand name (like hoover)

[greasemonkey]

Cheers. The stator looked pretty ropey in this one anyway. Didn't know replacements were avaliable. The age of it, I was suprised that they are still about.

[Tony]

http://www.screwfix.com/p/reinforced-suction-hose-with-filter-7m-x-1/78767

Picked up just now, plenty flexible enough for what I'll use it for

[julianf]

good stuff - glad its what you wanted.

as i say, the only issue ive had with it is when my mono travelled from the top of the bench to the floor very quickly - it put a hard kink in the hose just by the hosetail, and i couldnt reform it well (ended up cutting the end)

i would imagine the same if you trapped it under somthing heavy etc - so just watch out for that one : )

[julianf]

let me know if you swap the footer, would you? 

i should really buy one of those brass ones i linked to before - i think they would be good, but, if youre just about to change, ill wait to see how you get on with the other type!

[Tony]

Might scrape a few quid back by selling on the ABS footer on eBay, worth a go a think!

[Tony]

Sold the ABS fittings on ebay for £5.95 so the tubing worked out even cheaper