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Apple Roof Cleaning Tampa Florida -> Roof Cleaning Institute Of America -> Roof Cleaning Pumps -> Dual Delavans
Post InfoTOPIC: Dual Delavans
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Posts: 681
Date: Sep 18, 2008
Dual Delavans


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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Roof Cleaning Apprentice

Posts: 21
Date: Sep 20, 2008
RE: Dual Delavans


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

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Confident Roof Cleaning Houston TX



Certified Roof Cleaner Houston Texas


Posts: 79
Date: Nov 8, 2008
RE: Dual Delavans


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

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Date: Nov 9, 2008
RE: Dual Delavans


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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Roof Cleaning Alabama 888-251-7647



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Posts: 108
Date: Nov 11, 2008
RE: Dual Delavans


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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Apple Roof Cleaning Tampa FL (813) 655-8777



Roof Cleaning Institute Of America Master Certified Roof Cleaning Instructor


Status: Online
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Date: Nov 11, 2008
RE: Dual Delavans


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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Confident Roof Cleaning Houston TX



Certified Roof Cleaner Houston Texas


Posts: 79
Date: Nov 11, 2008
RE: Dual Delavans


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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Roof Cleaning Alabama 888-251-7647



RCIA Certified Roof Cleaner


Posts: 108
Date: Nov 11, 2008
RE: Dual Delavans


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
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Apple Roof Cleaning Tampa FL (813) 655-8777



Roof Cleaning Institute Of America Master Certified Roof Cleaning Instructor


Status: Online
Posts: 2018
Date: Nov 12, 2008
RE: Dual Delavans


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
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Roof Cleaning Alabama 888-251-7647



RCIA Certified Roof Cleaner


Posts: 108
Date: Nov 12, 2008
RE: Dual Delavans


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
Call Toll Free 888-251-7647

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Apple Roof Cleaning Tampa FL (813) 655-8777



Roof Cleaning Institute Of America Master Certified Roof Cleaning Instructor


Status: Online
Posts: 2018
Date: Nov 12, 2008
RE: Dual Delavans


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
813 655 8777
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Roof Cleaning Alabama 888-251-7647



RCIA Certified Roof Cleaner


Posts: 108
Date: Nov 12, 2008
RE: Dual Delavans


Bob said the body is as big as the pump head

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Russ Spence -Owner
Prokleen Roof Cleaning Alabama
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Apple Roof Cleaning Tampa FL (813) 655-8777



Roof Cleaning Institute Of America Master Certified Roof Cleaning Instructor


Status: Online
Posts: 2018
Date: Nov 12, 2008
RE: Dual Delavans


Sounds like a good 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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Confident Roof Cleaning Houston TX



Certified Roof Cleaner Houston Texas


Posts: 79
Date: Nov 14, 2008
RE: Dual Delavans


Here's a picture of it set up.

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Scott Davis
Confident Roof Cleaning
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713 817 6117

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Status: Online
Posts: 2018
Date: Nov 14, 2008
RE: Dual Delavans


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 system a 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 ?


 



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