Hydrostatic test pump designs or kits?

Hydrostatic test pump designs or kits?

This topic has 5 replies, 6 voices, and was last updated 3 February 2026 at 19:26 by Andy Stopford.

Viewing 6 posts - 1 through 6 (of 6 total)

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3 February 2026 at 18:10 #835776
Chris Veitch
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@chrisveitch14689
I’m interested in a small pump for hydrostatic testing and while I can see they’re available from several sources I thought it might be an interesting project which should be within my capabilities. I am aware of the Macc Models kits, but can anyone tell me if there are any other designs or kits available? I’ve done some searches but not found anything particularly promising – but might not have been looking in the right place.

Regards,

Chris
Advert

3 February 2026 at 18:29 #835781
JasonB
Moderator
@jasonb
Stuarts have similar as do Reeves
3 February 2026 at 18:35 #835787
Andrew Tinsley
Participant
@andrewtinsley63637
Last year I had the same urge to build a simple hydrostatic rig. However I found a complete unit from Vevor for silly money. I think it was £14 delivered. Turned out to be an excellent piece of kit. The only mod I made, was to fit a decent quality non return valve, although the existing one worked without leakage.

There was no way I could even buy the necessary materials for £14. The time saved was put to good use building a spark erosion machine.

Andrew.
3 February 2026 at 18:40 #835789
DC31k
Participant
@dc31k
The Macc one appears to be either out of stock or on back order.

Would a second hand one of these provide a good starting point?:

https://www.diy.com/departments/prowarm-water-pipe-pressure-testing-pump/5055538998393_BQ.prd

https://www.ebay.co.uk/itm/176377386693

Perhaps you can re-engineer the operating handle if it does not give fine enough control.

It would be prudent to verify the pressure gauge on anything you make – if a second and third opinion agree with it, it won’t be far out.
3 February 2026 at 19:26 #835795
Weary
Participant
@weary
Simple adaptable small hand-pump design here if you want to build your own ->

https://www.modelengineeringwebsite.com/Simple_boiler_pump.html

But, as Andrew wrote above, if you simply want to pressure test ‘something’, this has to be the best solution .

Phil
3 February 2026 at 19:26 #835797
Andy Stopford
Participant
@andystopford50521
I have one of these, probably the same as Andrew’s:

https://www.ebay.co.uk/itm/305711756627

The pressure gauge isn’t fantastic – it under-reads by about 10% at ~120 psi, but the pump itself works fine.

edit: Phil beat me to it
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