Kaixin Pumps

[Wolfy]

Emailed the company and they said they are in the midst of building a pump for an aussie company that can take 100-120c temperature. They are not testing the pump and if everything is ok then they will start producing from 20th next mth

Cool, I only took the pump/details to the 'aussie company' on Friday, so seems they're moving pretty quickly with it, which is good.

In other news ... First actual brew with the Kaixin pump today and the pumps worked without problem.

The only issue I had was a compacted grain bed due to a fine grain-crush and running the pump too quickly, adding some rice hulls and not opening the valve (on the pump outlet) too quickly resolved those issues.

Pump ran fine for the 2 hour mash

... then another 30mins (with the valve very restricted) while fly sparging


At the end of the boil, the pump recirculated almost-boiling (95degC) water through the plate chiller for about 10 mins and then was used (on the hot-side) to pump out of the kettle and through the plate chiller.

Flow through the plate chiller was significantly faster than the little brown solar pump or gravity, so much so that even with the cold-tap water running flat out (something I've never had to do before), the 30-plate plate chiller couldn't quite keep up. Into the fermentor the wort was about 21.5degC when it's usually under 20 this time of year, so next time I'll throttle the flow back a bit.
But I was happily surprised that the pump worked without issue on the hot-side of the plate chiller for long enough to drain the kettle (directly from boiling).

[Kev888]

All sounds very positive, yet again!

I guess the only thing left to check now is the endurance, and obviously that'll be a longer term test.

Cheers
Kev

[Fil]

Wolfy.. Grand job your doing there,breaking new pump ground.. hope the manufacturers and or the aussie suppliers recognise your netwoking input and reward you with a new hi temp one gratis..

can someone enlighten me to this 'trimming' that will enable a march warm wort pump handle boiling liquid?
all sounds a bit iffy to me:)


tia

[Pinto]

Wolfy.. Grand job your doing there,breaking new pump ground.. hope the manufacturers and or the aussie suppliers recognise your netwoking input and reward you with a new hi temp one gratis..

can someone enlighten me to this 'trimming' that will enable a march warm wort pump handle boiling liquid?
all sounds a bit iffy to me:)


tia

Think the idea of a "trim" is to account for the pump jamming up via thermal expansion by increasing the housing clearance. In theory, it'll work, but it might adversely affect the overall pumping performance at lower temperatures. different, heat stable housings sound a much better proposition

Will keep an eye on this one too

[weiht]

Emailed the company and they said they are in the midst of building a pump for an aussie company that can take 100-120c temperature. They are not testing the pump and if everything is ok then they will start producing from 20th next mth

Cool, I only took the pump/details to the 'aussie company' on Friday, so seems they're moving pretty quickly with it, which is good.

In other news ... First actual brew with the Kaixin pump today and the pumps worked without problem.

The Aussie company is ordering 500 units of pump! Kaixin is producing this batch more like an oem project for them, will probably keep some remaining stocks to sell on their own site, and a few demo units for further parties interested in big orders..

slightly disappointed because it may be pricey to buy from a aussie supplier even though u guys are near me, doesnt help that the AUD is too strong!! lol

But credit to u guys down there, a really hardcore bunch of homebrewers and very experienced n knowledgeable as well. Aren't u guys the reason why wy1469 is permanent!

[Wolfy]

Wolfy.. Grand job your doing there,breaking new pump ground.. hope the manufacturers and or the aussie suppliers recognise your netwoking input and reward you with a new hi temp one gratis..

can someone enlighten me to this 'trimming' that will enable a march warm wort pump handle boiling liquid?
all sounds a bit iffy to me:)

I'd not refuse the chance to test one of the new ones.

I don't have/know any details of what the trimming would involve, just the theory that if it stops because of thermal expansion then trimming it down a bit should help.
However, having pulled one apart, I wouldn't know where/how to start the process, at room-temp everything seems to have ample room to move.

These seem fine as long as you don't want to pump boiling wort (it might or might not work).
Otherwise, maybe try to get one of the new ones if they're designed and tested to work at 100degC - if they'll be available direct to the public.

[paulg]

I too have just ordered one of these pumps as I broke my brand new solar pump trying to fit a fitting onto the 1/2 inch thread and snapped the outlet pipe off.
too heavy handed these pumps look a bit more substantial
I have asked for the old style ones with 1/2 inch thread id they have any if not I need to find a way to convert to take 1/2 inch fitting

[darkonnis]

Are these just standard BSP fittings? Debating getting one for my rig, to pump wort post chiller to the fermenter.
To be fair, at £40ish delivered that makes them better than the solar pumps as you don't need to mess about with 12v powersupplies and its mag drive. Awesome find.

[Belter]

Does anyone have a direct link to the supplier?

[Wolfy]

Are these just standard BSP fittings? Debating getting one for my rig, to pump wort post chiller to the fermenter.
To be fair, at £40ish delivered that makes them better than the solar pumps as you don't need to mess about with 12v powersupplies and its mag drive. Awesome find.

I assume they are NPT rather than BSP fittings, but at 1/2 inch they're virtually interchangeable.

Does anyone have a direct link to the supplier?

See the first post.

[stevetk189]

I'm getting ready (looking under the sofa etc to find cash) to order a couple of these. The piccy shows the pump to have threadless hose fittings? This isn't a problem to me as I don't plan on unhooking them. I did spot in the original post something about Wolfy getting a different colour pump and that that was something to do with the threaded fitting on the older style pumps... Am I right that the yellow ones are a push over hose fitting requiring a hose clip?

I've been looking through the range of pumps they make and there's some serious kit there at silly prices, great find Wolfy!

[Wolfy]

I'm getting ready (looking under the sofa etc to find cash) to order a couple of these. The piccy shows the pump to have threadless hose fittings? This isn't a problem to me as I don't plan on unhooking them. I did spot in the original post something about Wolfy getting a different colour pump and that that was something to do with the threaded fitting on the older style pumps... Am I right that the yellow ones are a push over hose fitting requiring a hose clip?

You can order different models. 'RM' models have threaded fittings and the 'R' models come with push-fittings.
The issue with the new/older models was they are/were discontinuing 1/2 inch threaded fitting models due to lack of interest, with sufficient orders it may be possible they'll continue to make 1/2 inch threaded models (I think the new material pumps (that operate at 100degC) will be 1/2 inch threaded or push fitting).

[stevetk189]

I'm getting ready (looking under the sofa etc to find cash) to order a couple of these. The piccy shows the pump to have threadless hose fittings? This isn't a problem to me as I don't plan on unhooking them. I did spot in the original post something about Wolfy getting a different colour pump and that that was something to do with the threaded fitting on the older style pumps... Am I right that the yellow ones are a push over hose fitting requiring a hose clip?

You can order different models. 'RM' models have threaded fittings and the 'R' models come with push-fittings.
The issue with the new/older models was they are/were discontinuing 1/2 inch threaded fitting models due to lack of interest, with sufficient orders it may be possible they'll continue to make 1/2 inch threaded models (I think the new material pumps (that operate at 100degC) will be 1/2 inch threaded or push fitting).

Cheers for that Wolfy. I'm wondering whether to hang on and wait for the 100C pumps. I don't currently plan to use a pump during the boil/cooling phase but this may change...

[paulg]

I ordered a pump via the aliexpress and then sent a message asking if 1/2 threaded pump was available,, and had a reply saying yes one was dispatched to me with thread connections so maybe if we order and prove there is a demand for 1/2 thread the company will accomadate us if not get your order in while stocks last

[alix101]

This looks promising, great post...I can't belive the limited options availible for pumping hot liquids and food grade..its insane