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Premium Member Roof Cleaning Institute of America Certified Roof Cleaning Specialist

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Date: Sep 18, 2008
Dual Delavans
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There is a very fine line when operating Dual Delavans

I tried multiple combinations of hose size, length, nozzles, guns and figured out the best combination for running one or two pumps together in tandem.

I talked to Bob with Pressure Tek at the NC round table and he says that the 5850 Delavans are no longer available to adjust to 100psi. They are fixed at 5gpm 60psi.

The most each pump will output under a load (100-200ft 5/8 hose and a #40 nozzle) is 3gpm.

Running 2 pumps together in tandem took some tweaking to get it to double the output to a maximum of 6gpm.

The slightest little bit of restriction whether it be in the hose, gun, filter or nozzle will cause the dual system to bog down and produce less flow than the maximum of 6gpm.

60psi is not enough pressure to push a full 10gpm. If you want a 10+gpm roof rig, get a Yamada Kynar pump like Apples.

Dual Delavans

Hose: 5/8 works for one pump but not two in tandem. 5/8 hose is too small and will cause the pumps to cycle on and off.

3/4 hose is what you need for the dual setup.

Gun: Regular garden guns are too restrictive, so are the poly guns. Best cheap guns I have found are either the high flow twist guns http://www.lrnelson.com/industrial/50503

or

3/4 full port ball valve with adapters to fit a coupler for interchangeable nozzles. Have not tried the expensive accuspray guns.

Filter: Bogs the dual system down too much. No filter recommended.

Nozzles: The #30 or #40 works best for one pump, dual pumps need #60 nozzles at least. 3/8" barbs also work well.

Use the #30/one pump or #60/two pumps for extra reach
Use the #40/one pump or 3/8" barb/two pumps for extra flow

Power Supply: Use a separate strong car battery. At least 770CCA/900CA. Use short as possible big fat 10 gauge wire and a 60AMP breaker switch so it won't fry.




-- Edited by Mike Sullivan at 11:43, 2009-03-02

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Guest

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Date: Sep 20, 2008
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Mike, I would like to see a picture of your dual Dela's if you got some!

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"The House Whisperer"
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Guest

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Date: Nov 8, 2008
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Bump....I Would also like to see this.

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RCIA Founder

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Date: Nov 9, 2008
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Confident Roof Cleaning wrote:

Bump....I Would also like to see this.



Welcome Scott !!!
Your signature is not working right.
It is better, much better, to write out roof cleaning houston tx in your signature, and hyperlink it.
This creates a text link, MUCH better.
Got to remember, this IS a Page rank 3 roof cleaning Forum.
A TEXT link on here is priceless to you.
Chris



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Apple Roof Cleaning Tampa Florida

711 Westbrook

Brandon, FL 33511

813 655 8777

See our website here 

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Guest

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Date: Nov 11, 2008
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I ran them for a while, it was ok but if I knowing what I know now I would just purchase the new Delavan that is 7gpm @ 100psi and be done with it.

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Russ Spence -Owner
Prokleen Roof Cleaning Alabama
Roof Cleaning Fairhope, Daphne, Spanish Fort, Gulf Shores and Orange Beach Alabama
Call 251-222-3011

 



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Date: Nov 11, 2008
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Russ Spence wrote:

I ran them for a while, it was ok but if I knowing what I know now I would just purchase the new Delavan that is 7gpm @ 100psi and be done with it.



Oh, you mean the Bobcat roof cleaning pump ?
IF it holds up, it should be a good pump.
Remember, Poly Headed Pumps tend to leak as they are attacked by the SHC ?
The MORE flow and pressure of the SHC, the faster they seem to go bad.
But, new pump heads are cheap, and I undeerstand easy to change ?
It MAY be the ticket for a roof cleaning pump ?
Time will tell.

888888888888888888888888888888888888888888



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Apple Roof Cleaning Tampa Florida

711 Westbrook

Brandon, FL 33511

813 655 8777

See our website here 

Click here for more information

Here are more of our services

Watch a short video

 




 



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Date: Nov 11, 2008
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Apple Roof Cleaning wrote:

Russ Spence wrote:

I ran them for a while, it was ok but if I knowing what I know now I would just purchase the new Delavan that is 7gpm @ 100psi and be done with it.



Oh, you mean the Bobcat roof cleaning pump ?
IF it holds up, it should be a good pump.
Remember, Poly Headed Pumps tend to leak as they are attacked by the SHC ?
The MORE flow and pressure of the SHC, the faster they seem to go bad.
But, new pump heads are cheap, and I undeerstand easy to change ?
It MAY be the ticket for a roof cleaning pump ?
Time will tell.

888888888888888888888888888888888888888888





No not the Bobcat. It is actually a basic delevan 12v pump. But it pumps 7 GPM at 100PSI. I have one, but I was thingking about hooking 2 of those up for rinsing. The pump by itself is more than enough for applying sauce, but not for rinsing. It pumps as good as the Bandit.



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Date: Nov 11, 2008
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Apple Roof Cleaning wrote:

Russ Spence wrote:

I ran them for a while, it was ok but if I knowing what I know now I would just purchase the new Delavan that is 7gpm @ 100psi and be done with it.



Oh, you mean the Bobcat roof cleaning pump ?
IF it holds up, it should be a good pump.
Remember, Poly Headed Pumps tend to leak as they are attacked by the SHC ?
The MORE flow and pressure of the SHC, the faster they seem to go bad.
But, new pump heads are cheap, and I undeerstand easy to change ?
It MAY be the ticket for a roof cleaning pump ?
Time will tell.

888888888888888888888888888888888888888888


No Chris it is a new pump by Delavan - Cost $229.00



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Russ Spence -Owner
Prokleen Roof Cleaning Alabama
Roof Cleaning Fairhope, Daphne, Spanish Fort, Gulf Shores and Orange Beach Alabama
Call 251-222-3011

 



RCIA Founder

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Date: Nov 12, 2008
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Wow, can you provide a Link to it Russ ?
7 GPM at 100 PSI sounds like a roof cleaning pump all should know about !

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Apple Roof Cleaning Tampa Florida

711 Westbrook

Brandon, FL 33511

813 655 8777

See our website here 

Click here for more information

Here are more of our services

Watch a short video

 




 



Guest

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Date: Nov 12, 2008
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Sorry I have not even seen it myself, I got all the info I know from a conversation with Bob on the phone. I will see what I can dig up though

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Russ Spence -Owner
Prokleen Roof Cleaning Alabama
Roof Cleaning Fairhope, Daphne, Spanish Fort, Gulf Shores and Orange Beach Alabama
Call 251-222-3011

 



RCIA Founder

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Date: Nov 12, 2008
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Here is the link to the Delevan Roof Cleanig Pumps
http://news.thomasnet.com/fullstory/464091
It look to be the new 7800 series ?
Wonder how much amps that puppy draws, and what kind of a duty cycle it has ?


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Apple Roof Cleaning Tampa Florida

711 Westbrook

Brandon, FL 33511

813 655 8777

See our website here 

Click here for more information

Here are more of our services

Watch a short video

 




 



Guest

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Posts: 110
Date: Nov 12, 2008
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Bob said the body is as big as the pump head

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Russ Spence -Owner
Prokleen Roof Cleaning Alabama
Roof Cleaning Fairhope, Daphne, Spanish Fort, Gulf Shores and Orange Beach Alabama
Call 251-222-3011

 



RCIA Founder

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Date: Nov 12, 2008
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Sounds like agood roof cleaning pump to me ?
It must have a hell of a motor,, so be sure to use big gage wire ?


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Apple Roof Cleaning Tampa Florida

711 Westbrook

Brandon, FL 33511

813 655 8777

See our website here 

Click here for more information

Here are more of our services

Watch a short video

 




 



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Date: Nov 14, 2008
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Here's a picture of it set up.

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Date: Nov 14, 2008
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Confident Roof Cleaning wrote:

Here's a picture of it set up.



Hello Scott !!!
Did you go away from the Bandit for roof cleaning ?
The roof cleaning business in Tampa is booming for us, right now.
We are doing two big Tile Roof Cleanings in Pinellas County today, right across Tampa Bay,
It will be a 1700 dollar day!
Ordered the parts from Hayward today to make the Vari Flow roof cleaning chemical delivery systema reality !
I MISS you, Russ, Ron, Anthony, Jeffery, Nick, Larry, and all the old gang!
I hope Roof Cleaning in Houston Texas has been good to you ?




__________________


Apple Roof Cleaning Tampa Florida

711 Westbrook

Brandon, FL 33511

813 655 8777

See our website here 

Click here for more information

Here are more of our services

Watch a short video

 




 



Guest

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Date: Nov 14, 2008
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Apple Roof Cleaning wrote:

Confident Roof Cleaning wrote:

Here's a picture of it set up.



Hello Scott !!!
Did you go away from the Bandit for roof cleaning ?
The roof cleaning business in Tampa is booming for us, right now.
We are doing two big Tile Roof Cleanings in Pinellas County today, right across Tampa Bay,
It will be a 1700 dollar day!
Ordered the parts from Hayward today to make the Vari Flow roof cleaning chemical delivery systema reality !
I MISS you, Russ, Ron, Anthony, Jeffery, Nick, Larry, and all the old gang!
I hope Roof Cleaning in Houston Texas has been good to you ?





Nope, havent left it completely yet. But our pump did go down on us again and we had thie roof below coming up. 14,000 sqft of tile and the 5800 delavan wasnt going to cut it. Delavan has a new roller pump (http://delavanagpumps.com/)that is keyed and field servicable. So we ordered it, but if this one craps out too, then we are def done with it and we'll look at a new setup.



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Premium Member Roof Cleaning Institute Of America Certified Roof Cleaning Specialist-MODERATOR

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Date: Nov 16, 2008
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Interesting thread. I'm sick of replacing my sureflow. Just finished up a job on Friday and noticed a decrease in PSI. Went and checked the pump and sure enough. Leaking all around the housing. AAAARRRRG! I just put this pump on the begining of Sept. Yea I have used the heck out of it but 2 months later and she's dead? I rinse the heck out of it after every job. Maybe if I stop taking care of them they will work longer. LOL

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Largo FL

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Larry Millette
 Roof Cleaning & Pressure Washing Florida.

  Roof Cleaners Clearwater, Pressure Washers Florida  Roof Cleaners Saint, Petersburg FL 



RCIA Founder

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Date: Nov 16, 2008
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Larry wrote:

Interesting thread. I'm sick of replacing my sureflow. Just finished up a job on Friday and noticed a decrease in PSI. Went and checked the pump and sure enough. Leaking all around the housing. AAAARRRRG! I just put this pump on the begining of Sept. Yea I have used the heck out of it but 2 months later and she's dead? I rinse the heck out of it after every job. Maybe if I stop taking care of them they will work longer. LOL



WHAT happened to the Delavan you won from the Florida Drawing Larry ?



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Apple Roof Cleaning Tampa Florida

711 Westbrook

Brandon, FL 33511

813 655 8777

See our website here 

Click here for more information

Here are more of our services

Watch a short video

 




 



Premium Member Roof Cleaning Institute of America Certified Roof Cleaning Specialist

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Date: Nov 17, 2008
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HOLY SCHNIKEESE!!! That's looks bad ass!!

DAMN I GOTTA GET ME ONE OF THESE!!

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Premium Member Roof Cleaning Institute of America Certified Roof Cleaning Specialist

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Posts: 1247
Date: Nov 17, 2008
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Confident Roof Cleaning wrote:

Here's a picture of it set up.



http://delavanagpumps.com/powerflo/fatboy.htm


DANG!!!! That pump looks bad aZZ!! HOLY SCHNIKEESE!!


DAMN I GOTTA GET ME TWO OF THESE!!!




-- Edited by Mike Sullivan at 14:06, 2008-11-17

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