[FRD135i]

I have the standard 4 Gal Chapin 4 gallon backpack sprayer (Pump type), I was thinking about getting a CF vale to make the flow constant and aid in applying solutions evenly. Should I get the 21 PSI or the 14.5 PSI valve?

 

[pennstater2005]

I asked a similar question here.....

https://thelawnforum.com/viewtopic.php?f=4&t=33&hilit=Chapin+constant+flow&start=100#p39784

I went with the 29psi version. It's been excellent! Amazon didn't have it, at least not at the price I paid.

https://www.grainger.com/product/CHAPIN-Constant-Flow-Valve-31NF84

 

[pennstater2005]

I asked a similar question here.....

https://thelawnforum.com/viewtopic.php?f=4&t=33&hilit=Chapin+constant+flow&start=100#p39784

I went with the 29psi version. It's been excellent! Amazon didn't have it, at least not at the price I paid.

https://www.grainger.com/product/CHAPIN-Constant-Flow-Valve-31NF84

Edited to add: The CF valve coupled with the Teejet was awesome. I had no idea spraying could be like that. Perfect, even, and predictable flow and patterning. I'll never spray without that setup again.

 

[FRD135i]

I asked a similar question here.....

https://thelawnforum.com/viewtopic.php?f=4&t=33&hilit=Chapin+constant+flow&start=100#p39784

I went with the 29psi version. It's been excellent! Amazon didn't have it, at least not at the price I paid.

https://www.grainger.com/product/CHAPIN-Constant-Flow-Valve-31NF84

Edited to add: The CF valve coupled with the Teejet was awesome. I had no idea spraying could be like that. Perfect, even, and predictable flow and patterning. I'll never spray without that setup again.

^ thanks for that, everything under my search was coming up with the new fandangled battery sprayer everyone is using, haha

 

[pennstater2005]

I asked a similar question here.....

https://thelawnforum.com/viewtopic.php?f=4&t=33&hilit=Chapin+constant+flow&start=100#p39784

I went with the 29psi version. It's been excellent! Amazon didn't have it, at least not at the price I paid.

https://www.grainger.com/product/CHAPIN-Constant-Flow-Valve-31NF84

Edited to add: The CF valve coupled with the Teejet was awesome. I had no idea spraying could be like that. Perfect, even, and predictable flow and patterning. I'll never spray without that setup again.

^ thanks for that, everything under my search was coming up with the new fandangled battery sprayer everyone is using, haha

That's what happened to me. Mine is the hand pump style. Not to say I don't want a battery powered one!

 

[stotea]

I have the 29 PSI that I use for broadcast spraying prodiamine or anything non-foliar. I recently got the 15 PSI for spot/foliar spraying just so I don't have to pump as much. Come Thursday I'll have an M4 battery sprayer, though, so I'll likely keep the 29 PSI on that for broadcast apps and the 15 PSI on my hand cannon for spot spraying.

 

[Kicker]

I have the 29 PSI that I use for broadcast spraying prodiamine or anything non-foliar. I recently got the 15 PSI for spot/foliar spraying just so I don't have to pump as much. Come Thursday I'll have an M4 battery sprayer, though, so I'll likely keep the 29 PSI on that for broadcast apps and the 15 PSI on my hand cannon for spot spraying.

I'll also get my M4 battery sprayer this thursday. Why are you putting the 29psi cfv on the battery sprayer?

It's rated at max 60psi (doubtful) with an adjustable (dial) control knob.

 

[Ware]

I have the standard 4 Gal Chapin 4 gallon backpack sprayer (Pump type), I was thinking about getting a CF vale to make the flow constant and aid in applying solutions evenly. Should I get the 21 PSI or the 14.5 PSI valve?

I would probably opt for the 21 psi Chapin CF valve or the 29 psi Chapin CF valve for a Chapin manual pump backpack sprayer. I don't think you would have any trouble maintaining those system pressures.

 

[stotea]

I'll also get my M4 battery sprayer this thursday. Why are you putting the 29psi cfv on the battery sprayer?

It's rated at max 60psi (doubtful) with an adjustable (dial) control knob.

Just so the pressure (and theoretically the flow rate) would be constant. As far as I know, the dial actually controls the pump's voltage. So it's only indirectly controlling the pressure (i.e., it's not really a pressure regulator). I suppose I could get a pressure gauge instead, but that would require spending more $. Although a gauge would be a nice thing to have regardless. Perhaps both!

 

[FRD135i]

I have the standard 4 Gal Chapin 4 gallon backpack sprayer (Pump type), I was thinking about getting a CF vale to make the flow constant and aid in applying solutions evenly. Should I get the 21 PSI or the 14.5 PSI valve?

I would probably opt for the 21 psi Chapin CF valve or the 29 psi Chapin CF valve for a Chapin manual pump backpack sprayer. I don't think you would have any trouble maintaining those system pressures.

Yea, I work out a lot and wear my reel low shirt, maintaining pressure wont be an issues :lol: :lol:

 

[jha4aamu]

I have the standard 4 Gal Chapin 4 gallon backpack sprayer (Pump type), I was thinking about getting a CF vale to make the flow constant and aid in applying solutions evenly. Should I get the 21 PSI or the 14.5 PSI valve?

I would probably opt for the 21 psi Chapin CF valve or the 29 psi Chapin CF valve for a Chapin manual pump backpack sprayer. I don't think you would have any trouble maintaining those system pressures.

are those CF valves compatible with the @dfw_pilot wand set up? i purchased all the parts but the CF valve he linked is on backorder everywhere i have tried

 

[dfw_pilot]

@jha4aamu sadly, no, those CF valves only fit the wands that come on those sprayers, not the wand I described above.

FWIW, I use the 15 psi CF valve with my 1 gallon pump sprayer and enjoy it.

 

[jha4aamu]

@jha4aamu sadly, no, those CF valves only fit the wands that come on those sprayers, not the wand I described above.

FWIW, I use the 15 psi CF valve with my 1 gallon pump sprayer and enjoy it.

thanks. i ordered the 15psi (yellow i think??) CF valve about 3 weeks ago and still havent got it. hopefully it ships soon

 

[Ware]

I have the standard 4 Gal Chapin 4 gallon backpack sprayer (Pump type), I was thinking about getting a CF vale to make the flow constant and aid in applying solutions evenly. Should I get the 21 PSI or the 14.5 PSI valve?

I would probably opt for the 21 psi Chapin CF valve or the 29 psi Chapin CF valve for a Chapin manual pump backpack sprayer. I don't think you would have any trouble maintaining those system pressures.

Yea, I work out a lot and wear my reel low shirt, maintaining pressure wont be an issues :lol: :lol:

:lol:

 

[GPLC90]

@Ware

If one was to use the 21 psi CF Valve would they need to choose a nozzle with a greater output to account for the CF Psi?

For example, instead of using the XR11004 would the XR11005 or XR11006 be a better choice to put out 1 gallon per 1k sq. ft. at 2.5mph.

 

[Ware]

@Ware

If one was to use the 21 psi CF Valve would they need to choose a nozzle with a greater output to account for the CF Psi?

For example, instead of using the XR11004 would the XR11005 or XR11006 be a better choice to put out 1 gallon per 1k sq. ft. at 2.5mph.

Yes - to maintain the same application rate as a nozzle running at 40 psi, you would either have to increase the nozzle orifice size or slow your ground speed.

Alternatively, you could just recalibrate to whatever your red nozzle does at 21 psi.

 

[GPLC90]

@Ware thank you! And, if I may ask. Would the 43 psi on a backpack sprayer be too difficult to maintain in your opinion? Seems like, in theory, it would require a lot of arm pumping to do.

 

[dfw_pilot]

 

[GPLC90]

@dfw_pilot

😂😂😂😂😂

 

[MasterMech]

Never knew Glenn was a lefty! :lol: