Kaixin Pumps

[dean_wales]

Just to let you all know that Jack came good on his promise of getting these new high temperature pumps online.

You can buy them in his shop:

http://www.aliexpress.com/store/product ... 24722.html



I have just put my order in. Works out at $74.46 or £46.30 in our money including delivery. Fingers crossed that there is no extra duties or taxes to pay on arrival when UPS deliver it.

Fingers crossed!

Dean.

[darkonnis]

Cheers for the heads up Dean, I missed out last time so I've just ordered one. Hopefully.... this is me all sorted and the new brewery can go ahead now.

*excited*
Cooky

[Belter]

Just ordered mine we are totally happy these are foodsafe right?


Cheers Wolfy for your time and effort in researching these!

[alix101]

Does anyone know the IP rating on these, they look alot better than the march pump.

[Wolfy]

Just to let you all know that Jack came good on his promise of getting these new high temperature pumps online.
.

Nice, thanks for the update - make sure you let us know how it goes when it arrives.

Just ordered mine we are totally happy these are foodsafe right?

Cheers Wolfy for your time and effort in researching these!

In regard to the original ones I ordered (different material to the new high temp ones):
I requested the material-data sheet, was assured they are 'food safe' (according to Chinese regulations - each country is different), and they are used for an (expensive) commercial home-brewery system - so that was good enough for me.

Does anyone know the IP rating on these, they look alot better than the march pump.

One of the AHB forum members compared the pump(s) I have directly with a March, his review is here: http://www.aussiehomebrewer.com/forum/i ... t&p=963177

[Kev888]

Just looking at Dean's link; the description says:

Normal operating temperature is 0-80°C. If the higher operating environments is required, please consult with us.

Just wondering why - 80c seems a lot for air temperature so i assume they mean liquid temperature - has anyone consulted?

I really like the solid industrial nature of my march 815's motor, but yes it has vents in and I wouldn't want to try getting it soaked; these look much better sealed. The 815 has a slightly higher flow rate and temperature rating, but they're extremely costly and for me thats only justified by also having a solid track record; if these high temperature kaixin ones prove themselves long term then at that price they'll be a fantastic buy.

Cheers
Kev

[Highlander]

What is the best way to control flow with these sort of AC pumps?
Do you just connect them to the mains and have a valve on the output to vary the flow?
Can you run them against a closed valve with no problems?

[Kev888]

I've not used these kaixin ones myself, but yes normally you can restrict the output of magnetically coupled centrifugal pumps like these with a valve or something without harming the motor.

For pumps that you can't (or just want to be kind to) you can use a sort of bypass loop with another valve in - to return some of the flow from the outlet back to the inlet rather than to the outside world. (some can be used with electronic power controls but not all like that very much).

Cheers
Kev

[dean_wales]

Just regarding Kev's point about the 80c limit in the description.

It a bit of Chinese copy and paste slopiness. The descriptions on most of his products are riddled with errors and typos which is a bit frustrating but I tend to take the "his English is better than my Chinese" attitude.

Just in case anyone hadn't realised that Aliexpress act as a middle man for their transactions which can slow things down by a couple of days but it does mean that your bank details are handled by a large reputable company and that they keep sellers like Jack on the straight and narrow.

Fingers crossed about any extra duty (which would make it not so cheap) I had it delivered to my home address rather than my usual work address in case that helped make it seem more personal and less business like.

If only there was a cheaper (land based) shipping option.

If I am honest a high temperature 20 model rather than 15 would be a better fit for my system as the increased flow would be useful.

Dean.

[weiht]

Would these be appropriate for a small nano setup? Up to 250L? Just wonder if the outlets are small sized like that brown pump.

[dean_wales]

The outlets are 1/2 BSP as far as I am aware so should fit most peoples requirements.

I would have thought these pumps might be a bit small for shifting 250 litres though. I am moving 50 to 100 litres and nervous they might be a bit slow so I would consider the MP-20 model if it doesn't need to pump above 80c-85c.

Thanks,

Dean.

[darkonnis]

Guess it would depend on how fast you needed to move water. 8L a minute (probably 5/6L after head is taken int oaccount) is 60L in 10 minutes say. to move half your water you'd be looking at 20 minutes. OK for a sparge sure... too slow for initial mash in and certainly too slow for transfering out the boiler. I'd be looking at a bigger pump if I'm honest. you could look at multiple pumps in parallel as that might work out cheaper but all round more work.

[stevetk189]

Pump newbie question...

Are these pumps ok to run mounted on their side or do they have to be upright ie the base plate fixed facing downwards?

[darkonnis]

Waiting for mine to arrive but it shouldn't matter to be honest. The biggest thing with any pump is that liquid fills the chamber before you fire it up to prevent any dry running. With some of the older pumps they didn't like being ran at odd angles as its caused the bearings to wear, but if you mount it so it spins horizontally or vertically and so that the chamber is full prior to use I can't see you having any problems.

[darkonnis]

Just arrived. To the tune of £29 import charge. £18 HMRC, £11 UPS brokerage fee
I am firmly sickened by HMRC, the pump was $32 which is £20, to which they have charged nearly the same again. What a bunch of thieving c**ts