Chapin's new 20V Backpack Sprayer

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Re: Chapin's new 20V Backpack Sprayer

Post by edenl01 » August 3rd, 2016, 7:54 pm

Picked one up at Jet.com
With the 15% off for a new member it ended up being $121 shipped.

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Re: Chapin's new 20V Backpack Sprayer

Post by Ware » August 3rd, 2016, 7:59 pm

Southernguy311 wrote:So at least we've established this sprayer does have some limitations despite the overall ease of use and convenience.

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I think the overall ease of use/convenience wins. Pressure/flow should be fairly constant with a particular color nozzle as long as the pump maintains the same RPM... and higher flow rate nozzles aren't as big a deal when you're not pumping by hand.

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Re: Chapin's new 20V Backpack Sprayer

Post by LoneRanger » August 3rd, 2016, 8:22 pm

Southernguy311 wrote:So at least we've established this sprayer does have some limitations despite the overall ease of use and convenience.
Absolutely!
Ware wrote:Pressure/flow should be fairly constant with a particular color nozzle as long as the pump maintains the same RPM... and higher flow rate nozzles aren't as big a deal when you're not pumping by hand.
Well said. What is the pressure/flow rate though? Without measuring or regulating it, we don't exactly know. It's probably less than ~29psi at the tip, based on a previous post. It would be great if someone had a PG at the wand, while operating with TJ tips.

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Re: Chapin's new 20V Backpack Sprayer

Post by McLovin » August 3rd, 2016, 9:09 pm

Chapin specs read 0.4 to 0.5 gpm at 40-60 psi operating pressure.

I use the brown AIXR11005 tip and checked the calibration, my sprayer put out right at 0.5 gpm for the three flow tests I made. Close to the TeeJet catalog rating of 0.5 gpm at 40 psig. YMMV

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Re: Chapin's new 20V Backpack Sprayer

Post by LoneRanger » August 3rd, 2016, 9:35 pm



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Re: Chapin's new 20V Backpack Sprayer

Post by seiyafan » August 3rd, 2016, 10:14 pm

Tested with a pressure gauge at the handle end, it's 40 psi.
I connected a 29 psi CF Valves to the wand and the pump seems to be working continuously with no cycling but it leaked on the wand side, what am I doing wrong? There was no gasket, so should I use teflon tape?

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Re: Chapin's new 20V Backpack Sprayer

Post by LoneRanger » August 4th, 2016, 9:47 am

The CFV should have come with gaskets. Was it a Chapin product?

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Re: Chapin's new 20V Backpack Sprayer

Post by McLovin » August 4th, 2016, 9:58 am

What is the logic behind using a constant flow (CF) valve with a battery powered sprayer?

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Re: Chapin's new 20V Backpack Sprayer

Post by LoneRanger » August 4th, 2016, 10:42 am

The same logic used behind any battery powered sprayer, regardless if it's a backpack or tow behind. Are you assuming that this backpack is somehow different from other battery powered sprayers? It's not. While I will agree that this sprayer has a pressure-shut off switch, that does not confirm pressure at the tip. Is this sprayer accurate in it's pressure regulation? It very well maybe but, I haven't seen any confirmation to such.

Seiyafan, what equipment did you use to test with? Was it the Chapin handle with integrated PG?

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Re: Chapin's new 20V Backpack Sprayer

Post by seiyafan » August 4th, 2016, 11:00 am

LoneRanger wrote:The CFV should have come with gaskets. Was it a Chapin product?
Yes, I bought it at this place: http://www.minnesotawanner.com/CONSTANT ... 9b-tjt.htm

I call them up and the guy said the gasket is not necessary, it should just work. I am going to add some teflon tape to the wand end.
Last edited by seiyafan on August 4th, 2016, 11:13 am, edited 1 time in total.

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Re: Chapin's new 20V Backpack Sprayer

Post by seiyafan » August 4th, 2016, 11:01 am

LoneRanger wrote:Seiyafan, what equipment did you use to test with? Was it the Chapin handle with integrated PG?
I threaded a water pressure gauge to the stock handle.

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Re: Chapin's new 20V Backpack Sprayer

Post by McLovin » August 4th, 2016, 11:04 am

I use a CF valve on hand pumped sprayers. I could see the logic on a multi nozzle tow behind to keep the flow the same for all the nozzles. But with a single hand wand sprayer, a CFV is unnecessary. The spray nozzle selection provides the backpressure and thus creates constant flow. But you all can do whatever you please.
Last edited by McLovin on August 4th, 2016, 11:49 am, edited 1 time in total.

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Re: Chapin's new 20V Backpack Sprayer

Post by LoneRanger » August 4th, 2016, 11:19 am

^ Thanx.

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Re: Chapin's new 20V Backpack Sprayer

Post by seiyafan » August 4th, 2016, 2:57 pm

Ordered this wand: http://www.sprayerdepot.com/Shop-by-Cat ... ons/667124
I hope this time it works.

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Chapin's new 20V Backpack Sprayer

Post by ajmikola » August 4th, 2016, 11:11 pm

.
Last edited by ajmikola on August 4th, 2016, 11:34 pm, edited 1 time in total.

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Re: Chapin's new 20V Backpack Sprayer

Post by ajmikola » August 4th, 2016, 11:11 pm

LoneRanger wrote:^ Thanx for the info. Here is a cool link of TeeJets in action

This is what my life has become......enjoying tee jet you tube videos. It could be worse i guess.

When my neighbors try to ask about the lawn, my reply is "you dont want to know, if you enjoy your marriage you will walk away"

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Re: Chapin's new 20V Backpack Sprayer

Post by HitEmTrue » August 5th, 2016, 11:18 am

seiyafan wrote:
LoneRanger wrote:The CFV should have come with gaskets. Was it a Chapin product?
Yes, I bought it at this place: http://www.minnesotawanner.com/CONSTANT ... 9b-tjt.htm

I call them up and the guy said the gasket is not necessary, it should just work. I am going to add some teflon tape to the wand end.
Chapin threads are slightly different than TeeJet. Adapters between the two threads come with Chapin brand CF valves.

Some folks on here have said they've had no problems with the Chapin threads, which is a head-scratcher for me.

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Re: Chapin's new 20V Backpack Sprayer

Post by LoneRanger » August 5th, 2016, 11:29 am

seiyafan wrote:Yes, I bought it at this place: http://www.minnesotawanner.com/CONSTANT ... 9b-tjt.htm

I call them up and the guy said the gasket is not necessary, it should just work. I am going to add some teflon tape to the wand end.
It's possible the tubular style CFVs don't come with gaskets, as they maybe designed as self-sealing. However, that model is the wrong thread(11/16" NPT) for a the Chapin wand. A 3/8" BSP thread is needed. That's probably why it's not sealing. Let's hope the wand you ordered fits the Chapin trigger-handle and also has 11/16" NPT on the tip end.

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Re: Chapin's new 20V Backpack Sprayer

Post by krjay5 » August 16th, 2016, 9:11 am

Just picked this sprayer up for $115 shipped. Looking forward to testing it when all this rain passes.

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Re: Chapin's new 20V Backpack Sprayer

Post by LoneRanger » August 16th, 2016, 8:08 pm

^ Where at?

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