Which pump should I get?

[Bryce C]

Seems like a good idea to have a backup pump, I hear rebuilding these cheap pumps costs nearly as much as replacing them. The General Pump I currently have has last digits "13S", yet Steambrite only lists two models that look identical but have different flow rates. Seems like neither match the specs of my General pump exactly, does it matter as long as its close?

These are the specs for the "13S" model I have. Seems like a slightly lower flow rate and higher psi then the "12S" model listed on Steambrite...

 

[Bryce C]

Maybe a better question is, does it matter at all? How does my system max out at 1000 psi or so when the pump can produce 2500 psi? Does the pressure regulator define the high pressure limit. I just learned from Dwain that anything higher will implode the heat exchanger in my CDS.

 

[Dwain Ray]

Maybe a better question is, does it matter at all? How does my system max out at 1000 psi or so when the pump can produce 2500 psi? Does the pressure regulator define the high pressure limit. I just learned from Dwain that anything higher will implode the heat exchanger in my CDS.

I would be more interested in frame & input shaft size (size compared to what i have)flow (gpm) and power requirements of the pump (bhp) seal type ie: nitrile,viton buetil etc and temperature rated you want a pump that your not operating at its maximum rating ie if you regularly run 1000 psi @ 3.5 gpm you would want a pump that is rated at 1750psi+@ somewhere around 5gpm at your operating rpm if this makes sense keep in mind that gpm changes and is rated at a specific rpm .if you run the pump slower it will pump less volume . I use hypro pumps heres performance charts for 2400series as an example of what im talking about

 

[Dwain Ray]

I would be more interested in frame & input shaft size (size compared to what i have)flow (gpm) and power requirements of the pump (bhp) seal type ie: nitrile,viton buetil etc and temperature rated you want a pump that your not operating at its maximum rating ie if you regularly run 1000 psi @ 3.5 gpm you would want a pump that is rated at 1750psi+@ somewhere around 5gpm at your operating rpm if this makes sense keep in mind that gpm changes and is rated at a specific rpm .if you run the pump slower it will pump less volume . I use hypro pumps heres performance charts for 2400series as an example of what im talking about

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By the limited information i would go with i would go with the 1812 because of the 2 its closer to the output gpm of the pump you have

 

[Dwain Ray]

By the limited information i would go with i would go with the 1812 because of the 2 its closer to the output gpm of the pump you have

Google your part# theres alot of your exact model for sale and youtube videos on rebuild/repair
I googled Gp emperor HTXS1813S for sale and found a bunch

 

[Nate The Great]

Kleen-rite has been a reliable source for me.. Other sites will just drop-ship, but charge an arm and a leg for me..

 

[Bryce C]

I would be more interested in frame & input shaft size

In researching my pump, on General Pump's website, I cannot find a frame size. There are 3 measurements: bore, stroke, and shaft. And they are each in decimals of an inch. .709 in bore, .512 stroke, and .945 shaft. I'm guessing the .945 shaft is the input shaft? Is that what the pulley sits on? What is the bore and stroke?

Thanks for the charts. I see how the pumps gpm and hp change according to engine rpm. What doesn't make sense to me is how, at a given rpm the gpm only changes by .1 or .2 when looking at 1000 psi or 2000 psi. I thought the restriction required to go up that much in pressure would necessarily reduce the flow of gpm much more than that?

And how does my current CDS setup max out at around 1000 psi if my General pump at 1450 rpms puts out 2500 psi? And my unloader valve the Pulsar 4 PA goes up to 2300 psi? I can't find charts on my pump such as the ones you shared for Hypro so maybe I am reading that wrong. But, I feel like I'm close to understanding how the rpm, gpm, and pressure relationship works but still missing something...

 

[Bryce C]

Kleen-rite has been a reliable source for me.. Other sites will just drop-ship, but charge an arm and a leg for me..

Thanks Nate. I checked them out but they don't have my specific unloader valve the Pulsar 4 PA. I imagine one can get a different make of unloader valve but I don't know what to look for. Mine has a bypass. Should I just find the same exact one somewhere else or is there are way to source a different make and know it will work?

 

[Bryce C]

Yea my General Pump HTXS1813S seems to be obsolete. Most of those sites don't actually have it once I click through. It would be good for me to figure out how to make sure an alternative pump will actually mount in my current pumps location and work fine.