Problems with delavans?

Ron Musgraves

Ron Musgraves

Exterior Restoration Specialist
Staff member
I have been seeing lots of people reporting problems with the delavans.

Is there alternate pumps beside surflo?

could we please list along with dist info.

Please no dist, contractors only.

DonPhelps.jpg


In the above thread we are talking about debris not being able to travel through delavans.

i have heard this issue before, I also know its a Warrantee issue.

So are there alternatives or methods that we can resolve the issue proffessionally.
 
It is always a good idea to put a strainer on the suction tube if you run anything but liquids through the pump. That way the strainer will catch it and if you lose flow, you will know what to check first.

I only run stuff that dissolves 100% through my Delavans and Bandit, I do not want to take a chance of messing them up.

Some problems that people have had were using the alligator clips for the Delavans. This has been discussed on PTState and drawings with instructions are there.

With these electric pumps, the best way to connect it is with battery terminals, an inline fuse like 20 amps, heavy gauge wire like 12 or 10 gauge and a switch to turn it on and off.

I have been using the Delavans for over a year now I think and each one is still going strong. I do flush them out after I use them with at least 5 gallons of water.

If you decide to put it in a box to protect it from the weather, I would think about just making a cover for it as it does create heat and needs to dissipate that heat, in a box it is holding that heat. Or just keeping it in a box until you use it then put it back in the box when done.

Hope this helps.
 
Russ Spence said:
I have burned up 5 but it was my lazy azz that didnt like rinsing them when I was done
Click to expand...

So, this is being blown up for nothing. People keep saying these are junk.

in reality rinsing is the cure. using a strainer to keep objects out.

Any other ideas,

Are there alternate places on people that handle them? do they have a list of dealers?

We pull from the TOP of our tanks.
Our plastic feed tube is SEVERAL inches off the bottom.
We ALLOW Gravity to work FOR us.
Click to expand...
 
Last edited:
Ron Musgraves said:
I have been seeing lots of people reporting problems with the delavan's.

Is there alternate pumps beside shurflo?

could we please list along with dist info.

Please no dist, contractors only.

DonPhelps.jpg


In the above thread we are talking about debris not being able to travel through delavan's.

i have heard this issue before, I also know its a Warranty issue.

So are there alternatives or methods that we can resolve the issue professionally.
Click to expand...
I saw this post over at PT State "alleging" that Apple Sauce "burned up pumps" because it had "unnecessary stuff" in it, LOL
The ARMA Method Many advertise as using, uses TSP.
TSP seldom dissolves all the way.
If someone is so STUPID to see undissolved stuff in their tank, and NOT use a strainer, perhaps they should go back to Auto Detailing, or selling Mens Clothing ?We pull from the TOP of our tanks.
Our plastic feed tube is SEVERAL inches off the bottom.
We ALLOW Gravity to work FOR us.

When I fist left the Delco board, I was appalled by what I saw.
I saw this SAME person recommending 3/8 hose.
HOW many pumps did HE cook for his followers by telling them it was OK to use such restrictive hose ?

As far as roller pumps go, Farmers use them all the time with undissolved stuff in the tank.
ASK any farmer ?
But a strainer is always best.

The Delevan is a good pump for a 12 volt pump.
It is widely distributed.







NEW Delavan Diaphragm Pump
12V 60PSI 5.3GPM On Demand

Product ID: 5850-101E

This is a Brand NEW pump manufactured by Delavan Ag Pumps, Inc.


It offers On-Demand performance, excellent self-priming, and is widely used for AG and chemical spraying applications.


Description:
• Delavan PowerFLO™ Series Diaphragm Pump
• Demand Switch – Operates only when liquid flow is required
• Volts: 12 VDC
• Motor: Permanent magnet, totally enclosed
• Leads: 14 AWG, 12” Long
• Pump Type: 5 Chamber positive displacement diaphragm
• Pump is capable of being run dry
• Excellent self-priming capability
• Max. Flow: 5.3 GPM
• Pressure Shut-Off: 60 PSI
• Amps: 6 – 16.3
• Certifications: NSF standard 58
• Liquid Temp.: 140° Max.
• Priming Capabilities: 14’
• Inlet/Outlet Ports: 1/2” FNPT
• Housing: Polypropylene
• Valves: Viton
• Diaphragm: Santoprene
• Fasteners: Stainless steel
• Weight: 5.0 lbs


ONLY $129.99
 
Russ Spence said:
I have burned up 5 but it was my lazy azz that didnt like rinsing them when I was done
Click to expand...
Here is an OLD thread http://www.cleaningtalk.com/showthread.php?t=1374
One guy went through 2 Delavans in 6 months :eek:
Hey, when exposed to roof cleaning chemicals, stuff happens.
Scott from Confident Roof Cleaning in Houston has a Bleach Bandit that FAILED in 30 days :eek:
GUESS who got "blamed" ? http://www.propowerwash.com/board/upload/showthread.php?t=10760
Read from post 13 down!
Yep, it was "decided" that the Apple Ciders 1 percent Alcohol "dried out the rollers" LOL
Then Scott pointed out that ALL Dish Soap contains Alcohol, and many roof cleaners add Dawn or Ajax to their mix :p
 
I have used the delvan and shurflo's. Many recomend rinsing them. I don't unless you are storing it. The only time mine ever go bad is when I reconfigure my trailer and empty the chem lines and let air get into the pump. I have had pumps used for a year and a half with out being rinsed work great unit I took the chem out. but once the air gets to them and busy season pics up again they are shot.
 
Scott also said later that the pump was defective.

Apple Roof Cleaning said:
Scott from Confident Roof Cleaning in Houston has a Bleach Bandit that FAILED in 30 days :eek:
GUESS who got "blamed" ? http://www.propowerwash.com/board/upload/showthread.php?t=10760
Read from post 13 down!
Yep, it was "decided" that the Apple Ciders 1 percent Alcohol "dried out the rollers" LOL
Then Scott pointed out that ALL Dish Soap contains Alcohol, and many roof cleaners add Dawn or Ajax to their mix :p
Click to expand...
 
Kory said:
I have used the delvan and shurflo's. Many recomend rinsing them. I don't unless you are storing it. The only time mine ever go bad is when I reconfigure my trailer and empty the chem lines and let air get into the pump. I have had pumps used for a year and a half with out being rinsed work great unit I took the chem out. but once the air gets to them and busy season pics up again they are shot.
Click to expand...
ya know I never thought about that but you are right :eek:
 
Kory said:
Corrosion only takes place after the air hits it. It may be oxigin that does it Im not sure. I just know when it affects my equipment. These are my opinions people. I have no scientific explinations so try not to start bashing what works for me.
Click to expand...
Seems logical to me ?
I would think an oxidizer needs oxygen to oxidize ?
Smother the mother, and a pump you wont need another, sound cool ?
Excuse my Gaelic :eek:
 
Kory said:
I have used the delvan and shurflo's. Many recomend rinsing them. I don't unless you are storing it. The only time mine ever go bad is when I reconfigure my trailer and empty the chem lines and let air get into the pump. I have had pumps used for a year and a half with out being rinsed work great unit I took the chem out. but once the air gets to them and busy season pics up again they are shot.
Click to expand...

Thats great, you a guy that has success.

So just allowing them to drain also works? Is that what your saying?
 
Ron Musgraves said:
Thats great, you a guy that has success.

So just allowing them to drain also works? Is that what your saying?
Click to expand...

What I am saying is that as long as the chem stays in the line from the tank threw the pump and to the hose with no air getting in there you will not have problems.

I do not clean as many roofs a year as others on this board I clean maybe 50-60 a year. My set up is a 100 gallon tank with a exit on the side at the bottom, a ball valve is there along with a hose barb. A 3/4 inch Inside diamater hose carries my mix to the Delvan 5gpm pump a barb sends it threw 3/8 hose to the wand. I never detach the hoses it stays on my trailer with chems in the line at all times. If I do detach the lines and leave the pump without any chems in it and the air gets in it then I have problems. On my old trailer I went a year and a half on a shurflo no problems. Last season I used a delvan I needed more room on the trailer so I pulled the roof cleaning rig off. I rinsed the pump with ten gallons of water. went to use it a couple months later and it locked up. Its when the air & chems get together in the pump its bad news.
 
Kory said:
What I am saying is that as long as the chem stays in the line from the tank threw the pump and to the hose with no air getting in there you will not have problems.

I do not clean as many roofs a year as others on this board I clean maybe 50-60 a year. My set up is a 100 gallon tank with a exit on the side at the bottom, a ball valve is there along with a hose barb. A 3/4 inch Inside diamater hose carries my mix to the Delvan 5gpm pump a barb sends it threw 3/8 hose to the wand. I never detach the hoses it stays on my trailer with chems in the line at all times. If I do detach the lines and leave the pump without any chems in it and the air gets in it then I have problems. On my old trailer I went a year and a half on a shurflo no problems. Last season I used a delvan I needed more room on the trailer so I pulled the roof cleaning rig off. I rinsed the pump with ten gallons of water. went to use it a couple months later and it locked up. Its when the air & chems get together in the pump its bad news.
Click to expand...

Before storing a pump next time, try shooting a little PB Blaster into it, and you shouldn't have that problem next time.
 
Ron Musgraves said:
Please no dist, contractors only.

In the above thread we are talking about debris not being able to travel through delavans.

i have heard this issue before, I also know its a Warrantee issue.
Click to expand...

I know you said, "no distributors", but I have to chime in on this statement. The manufacturer's warranty doesn't cover debris lodged in the pump...it's not their fault it's in there. A vendor may, as a goodwill gesture, get the pump back, clean it out, and return it to the user. The only pump I know of that is designed to accept debris is a trash pump, and even they have limitations.
 
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