Chapin 20v Backpack Sprayer

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Re: Chapin 20v Backpack Sprayer

Post by g-man » Mon Feb 04, 2019 7:46 pm

^ check the filter at the wand, right before the trigger. It clogs very easy.

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Re: Chapin 20v Backpack Sprayer

Post by SCGrassMan » Tue Feb 05, 2019 8:08 am

I’ve been extremely disappointed with my Chapin 20V.

From the start it was surging and not spraying. It eventually stopped working entirely. I have now spent $90 to ship a $150 sprayer back to the manufacturer.

The cheap plastic wand is garbage and I don’t want to spend $50-$150 to build a new one that’s functional.

I can’t wait until I can afford a spreader mate, so hopefully I won’t ever have to use this thing again.
2019 Lawn Journal:
viewtopic.php?f=26&t=7338

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Re: Chapin 20v Backpack Sprayer

Post by smurg » Tue Feb 05, 2019 8:26 am

SCGrassMan wrote:
Tue Feb 05, 2019 8:08 am
I’ve been extremely disappointed with my Chapin 20V.

From the start it was surging and not spraying. It eventually stopped working entirely. I have now spent $90 to ship a $150 sprayer back to the manufacturer.

The cheap plastic wand is garbage and I don’t want to spend $50-$150 to build a new one that’s functional.

I can’t wait until I can afford a spreader mate, so hopefully I won’t ever have to use this thing again.
Until I found my fix to my current issue, I was looking at the 105Ex from Sprayers-plus. I saw them suggested elsewhere as a solid option.

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Re: Chapin 20v Backpack Sprayer

Post by cnet24 » Tue Feb 05, 2019 8:37 am

I wonder if there is a difference between the two sprayers I have seen (one is black, one is red). I have the black model and have never had issues- curious to see if the majority of issues are occurring in the red model?

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Re: Chapin 20v Backpack Sprayer

Post by SCGrassMan » Tue Feb 05, 2019 6:51 pm

smurg wrote:
Tue Feb 05, 2019 8:26 am
SCGrassMan wrote:
Tue Feb 05, 2019 8:08 am
I’ve been extremely disappointed with my Chapin 20V.

From the start it was surging and not spraying. It eventually stopped working entirely. I have now spent $90 to ship a $150 sprayer back to the manufacturer.

The cheap plastic wand is garbage and I don’t want to spend $50-$150 to build a new one that’s functional.

I can’t wait until I can afford a spreader mate, so hopefully I won’t ever have to use this thing again.
Until I found my fix to my current issue, I was looking at the 105Ex from Sprayers-plus. I saw them suggested elsewhere as a solid option.
Oh, and best of all, the cap doesn’t seal well enough (without extreme force) so when I shake the tank to mix things, it’s pouring out all over itself.

I’ll check out the 105ex but more than likely I will just wait on the spreader mate.
2019 Lawn Journal:
viewtopic.php?f=26&t=7338

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Re: Chapin 20v Backpack Sprayer

Post by smurg » Tue Feb 05, 2019 9:14 pm

I got everything put back together and it ran for a short time period and kicked back off. I took everything back off today and soldered a few more connections, cleaned everything, tightened all the hose clamps, etc. It's running now, but pulsing almost constantly. I believe it's because I had taken out the pressure switch screw not knowing what it did. When putting it back together, I kept it as far out as possible with the cap still sitting tight. Will get back into it tomorrow to tighten it down, testing it at different levels. That should raise the pressure it will hold and should stop the pulsing (hopefully).

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Re: TeeJet Nozzle Discussion

Post by Brackin4au » Wed Feb 06, 2019 10:17 am

So I recently got a chapin 20v and bought a teejet XR11004 nozzle. I did a bucket test yesterday to check on the GPM, and it took a little over 4 minutes to spray 1 gallon. Am I missing something? Because that would be closer to 0.25gpm instead of 0.4... right?

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Re: TeeJet Nozzle Discussion

Post by Ware » Wed Feb 06, 2019 10:52 am

-04 nozzles are rated 0.4 GPM at 40 PSI. What you are describing would indicate a lower operating pressure.

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Re: TeeJet Nozzle Discussion

Post by Brackin4au » Wed Feb 06, 2019 11:02 am

That’s what I figured too, but not sure how to fix that. The chapin claims 35-40psi, and I’m not finding a way to adjust it

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Re: TeeJet Nozzle Discussion

Post by Ware » Wed Feb 06, 2019 11:16 am

Yeah, I am not aware of an adjustment, and we do not not know under what conditions they measured 35-40 PSI - it could have been with a smaller nozzle orifice (i.e. the pump is having trouble keeping up with the red nozzle flow). Do you have a yellow -02 nozzle to test? You could see if it gets closer to the 0.2 GPM at 40 PSI rating.

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Re: TeeJet Nozzle Discussion

Post by Brackin4au » Wed Feb 06, 2019 11:18 am

No. Just have the nozzles it came with, and bought the 04 nozzle to add to it. I’m going to try and test it again today. Maybe it wasn’t primed well enough or something.
Last edited by Brackin4au on Wed Feb 06, 2019 11:18 am, edited 1 time in total.

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Re: TeeJet Nozzle Discussion

Post by Ware » Wed Feb 06, 2019 11:27 am

The Chapin 6-8175 Shut-off Assembly w/Gauge would tell you what your operating pressure is - it looks like it would be a direct swap.

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Re: Chapin 20v Backpack Sprayer

Post by Lawnguyland » Wed Feb 06, 2019 11:44 am

Thanks for posting the updates smurg and hope you get the sprayer working better than new.

Since it seems most are only sharing bad experiences I want to share my positive experience. I bought my 20v 63985 from Walmart in June of 2017 and haven't had any pump or battery issues with it yet. I do have to clean the screen in the wand every third or fourth use. I use it every 10-14 days during the growing season and I really like it. It's my first backpack sprayer so I can't compare it to anything else though. Hopefully it can keep up for another year and I'm not jinxing myself by praising it.

Are there many people on here that have a good working Chapin 20v sprayer over 2 years old? Or does it seem like they are all ticking time bombs once the warranty ends? I always triple rinse and always remove the battery when I'm done spraying so hopefully I can get mine to last a long time.

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Re: Chapin 20v Backpack Sprayer

Post by Ware » Wed Feb 06, 2019 11:57 am

I haven't had any issues with mine - other than leaving the battery hooked up and completely discharging it shortly after I got it. All has worked well since.

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Re: TeeJet Nozzle Discussion

Post by Brackin4au » Wed Feb 06, 2019 12:10 pm

Thanks @Ware I will look into that if needed. I just tested it again, the nozzles it came with (fan and brass adjustable) both put out about the same GPM. So I just got off the phone with Chapin and the customer service guy wasn’t sure what was wrong, but agreed that the sprayer is rated for 35-40psi and 0.4-0.5gpm, so something is not right. He said the engineers were on lunch and he will talk with them and call me back...
Last edited by Brackin4au on Wed Feb 06, 2019 12:11 pm, edited 2 times in total.

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Re: Chapin 20v Backpack Sprayer

Post by Brackin4au » Wed Feb 06, 2019 12:19 pm

I just got mine, and added a teejet nozzle which I’ve been discussing some in that thread, but mine is already giving me an issue. It is rated 35-40 psi and 0.4-0.5gpm, even confirmed by Chapin on the phone. However, when I try a bucket test, it takes a little over 4 minutes to spray 1gal, no matter which nozzle I have on there. Anyone have/had this issue?
Last edited by Brackin4au on Wed Feb 06, 2019 12:30 pm, edited 2 times in total.

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Re: TeeJet Nozzle Discussion

Post by Ware » Wed Feb 06, 2019 12:25 pm

Brackin4au wrote:
Wed Feb 06, 2019 12:10 pm
Thanks Ware I will look into that if needed. I just tested it again, the nozzles it came with (fan and brass adjustable) both put out about the same GPM. So I just got off the phone with Chapin and the customer service guy wasn’t sure what was wrong, but agreed that the sprayer is rated for 35-40psi and 0.4-0.5gpm, so something is not right. He said the engineers were on lunch and he will talk with them and call me back...
I moved this conversation over here to the Chapin 20V thread.

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Re: TeeJet Nozzle Discussion

Post by g-man » Wed Feb 06, 2019 12:26 pm

@Brackin4au Chapin just installs a delavan pump into the tank they mold. I believe that it is a 2220 model.

The user manual describes the set points on at 25psi and off at 40psi.

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Re: TeeJet Nozzle Discussion

Post by Brackin4au » Wed Feb 06, 2019 12:27 pm

Ware wrote:
Wed Feb 06, 2019 12:25 pm
Brackin4au wrote:
Wed Feb 06, 2019 12:10 pm
Thanks Ware I will look into that if needed. I just tested it again, the nozzles it came with (fan and brass adjustable) both put out about the same GPM. So I just got off the phone with Chapin and the customer service guy wasn’t sure what was wrong, but agreed that the sprayer is rated for 35-40psi and 0.4-0.5gpm, so something is not right. He said the engineers were on lunch and he will talk with them and call me back...
I moved this conversation over here to the Chapin 20V thread.
:thumbup:

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Re: TeeJet Nozzle Discussion

Post by Brackin4au » Wed Feb 06, 2019 12:56 pm

g-man wrote:
Wed Feb 06, 2019 12:26 pm
@Brackin4au Chapin just installs a delavan pump into the tank they mold. I believe that it is a 2220 model.

The user manual describes the set points on at 25psi and off at 40psi.
So is that meaning the usable pressure will be 25psi?

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