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Old 05-10-2014, 11:03 AM
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turf hokie turf hokie is offline
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pump identification please

Has any body seen one of these pumps? I am having a hard time finding it online. It came on a spray truck I bought. It is working fine but I want to know what it is should there be an issue. The previous owner is not around to ask.

Thanks
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Old 05-10-2014, 12:23 PM
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Where's Pumptec when you need him?

Looks like some kind of Roller Pump on Steroids.
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Old 05-10-2014, 12:44 PM
greendoctor greendoctor is online now
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Hypro Duplex Piston Pump. I believe the big twin 5200.
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Old 05-10-2014, 01:07 PM
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Ah yes, the words are upside down "Hypro" and "Twin"

Also, the large "H" in the Head casting
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Old 05-10-2014, 01:30 PM
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Quote:
Originally Posted by greendoctor View Post
Hypro Duplex Piston Pump. I believe the big twin 5200.
I second the Hypro duplex. Only I believe it to be a diaphragm pump, not a Piston. Bottom line it is one of the Cheapest pumps you can buy. They are a throw away pump that you don't rebuild. They also are designed for High Pressure Low volume.

I would replace it with a Hypro Roller Pump that might only give 100 PSI constant, but enough volume to agitate your tank via a By Pass.

.
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Old 05-10-2014, 01:57 PM
greendoctor greendoctor is online now
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That compact, heavy body gives it away as the 5200 Big Twin. That pump is rated at 10 GPM and 400 PSI. It would be a good pump if it were made like the Maruyama Pumps. Those are aluminum body, brass manifold, and stainless steel pistons/cylinders.
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Old 05-10-2014, 05:39 PM
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Quote:
Originally Posted by greendoctor View Post
That compact, heavy body gives it away as the 5200 Big Twin. That pump is rated at 10 GPM and 400 PSI. It would be a good pump if it were made like the Maruyama Pumps. Those are aluminum body, brass manifold, and stainless steel pistons/cylinders.
It might be a 5200 but I still don't think it is. However it is still Junk IMHO because it uses open Grease lubrication instead of Oil Bath.

.
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Old 05-10-2014, 07:36 PM
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Thanks for the help guys!

It runs one of my tree and shrub set ups, we will go to 400 psi no problem with the set up and still have agitation back to the tank.

I assume it is the bigger pump that Green Doc referred to because of the higher psi.

The 100 psi pump that Ric is recommending wont work for us as it is not enough pressure for what we need it to do. I will look into an oil bath pump as a replacement tho.

I do like that so far it seems much simpler than all the other pumps that I have. This one just seems bullet proof so far this year.
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Old 05-11-2014, 04:23 AM
greendoctor greendoctor is online now
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Not much to go wrong with a Hypro Big Twin not run dry for more than a few seconds. For such a good pump, they are cheap. I see them listed for less than $500. Maruyama is almost $1000 for the equivalent gallonage and the Rolls Royce are the CAT pumps.
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