European Equipment... This is odd.

mgriff

mgriff

New member
I purchased a used skid with a rusted out heating unit for a pretty good price. After I got the unit home I of course began searching to find the exact specs of the unit. Did I mention all the labels were gone from being stored outdoors? I was told that the unit was a 4 GPM @ 4,000 PSI. After literally a month of searching I have figured out the pump is an Interpump WS101 which is 15 LPM @ 200 Bar, also known as 4 GPM @ 3,000 PSI. The interesting part is the unloader, it is a General Pump ZKHM. Both of which were distributed in Europe, not America. This is on an old Delco Equalizer skid which I am pretty sure was an American distributor. Possible swap? The unit only has 370 hours on it.

I have rebuilt the pump and it works great, just not as large as I had hoped. It is powered by a 14 HP Vanguard. Suggestions on changing the pump and unloader to get a higher flow without changing engines? Is there a market for used pumps in like new condition?
 
Bob Smith from Delco back in the 70s was the sole importer for interpump and used them on his machines, to make them proprietary like Hotsy and their pumps. This was years before General Pump was born in the US as an importer.

You could put a higher volume pump on it without changing the unloader and get more volume, and with a burner nozzle change, retain your heat rise. It's got a Winco generator on it, doesn't it?
 
From what I have been able to find, the ZKHM unloader has a max pressure capability of 3,000 psi but a flow rate of 10.8 GPM so I certainly am interested in gaining volume. What would be my best hope for more volume without an engine change? Current engine is a vanguard 14 V-Twin. As for the burner, it needs a new coil as well as a burner overhaul. The only coil I have been able to find was $600 and a burner overhaul is about $350. After tax is figured in I can add about $250 and have a complete new hot box. If you have a better idea or could share some knowledge with me I would love to know what you think.
 
As Russ stated, You can change your pump for a higher flow however, With a 14 horse engine, 5 gpm will pretty much max out the engine. Keep in mind, The flow rate on the unloader body is max flow for the unloader. Obviously, you would need a whole lot more engine to even get close to 10.8 gal.
 
clean2be, I understand the limits of the separate pieces of equipment, but thank you for explaining just in case. I wish I had the budget to pull the trigger on a new motor, pump, and burner, but that's just not the case. I am happy with the cleaning capabilities of the 3000 psi so far but could certainly use more flow for rinsing and to get more lift on my 20" surface cleaner. What kind of a difference would gaining 1 GPM make?
 
Hey Michael, I'm with you on more flow. In reality, We probably have a lot of company...

As for an additional 1 gpm. It will make a noticeable improvement.

Best to you!
Michael,
Coastal Cleaning Serv.
 
Anyone have pump suggestions to be paired with a vanguard 14 v-twin? Max psi is 3000 due to the unloader. Would like 5 GPM more would be great just not sure whats possible with the engine.
 
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