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Fimco Sprayer Problem

Posted on 5/26/23 at 4:37 pm
Posted by GAFF
Georgia
Member since Aug 2010
2450 posts
Posted on 5/26/23 at 4:37 pm
I have a 25 gallon boomless sprayer with the 4.5 gallon, 12v pump. If I’m spraying with the wand it will build and maintain pressure at around 40 psi fine. When I switch over to the boom it’ll max out at around 20 psi. This isn’t enough pressure to create a spray and instead is a weak stream. I’ve checked connections and filters. Can’t find any problems. Any ideas?
Posted by Clames
Member since Oct 2010
16590 posts
Posted on 5/26/23 at 4:53 pm to
Pump head problem, SureFlo pump? Diaphram or valves could be leaking enough internally to not flow enough to build the pressure you need. Not difficult to service yourself.
Posted by SuperSaint
Sorting Out OT BS Since '2007'
Member since Sep 2007
140462 posts
Posted on 5/26/23 at 4:58 pm to
quote:

a weak stream.
prostate?
Posted by LSUtigerME
Walker, LA
Member since Oct 2012
3798 posts
Posted on 5/26/23 at 5:19 pm to
quote:

25 gallon boomless sprayer with the 4.5 gallon, 12v pump. If I’m spraying with the wand it will build and maintain pressure at around 40 psi fine. When I switch over to the boom it’ll max out at around 20 psi.

4.5 gpm is a huge pump for a 25 Gal sprayer.

You said it was boomless, but then said you switch over to the boom? Do you have too many/too large nozzles for the pump? The higher flow rate you need, the lower pressure you will see. Have you tried it with maybe half the boom to see if it works that way?
Posted by GAFF
Georgia
Member since Aug 2010
2450 posts
Posted on 5/26/23 at 7:39 pm to
Here the one I have (Tractor Supply)

It’s been working fine. I’ve sprayed my property many times without issue. The way it is is the way it came from factory so I can’t speak to the pump size and nozzles.
Posted by lsujunky
Down By The River
Member since Jun 2011
2264 posts
Posted on 5/27/23 at 3:54 pm to
I have a 40 AG Sprayer on a trailer with the same fimco boomless spray bar. Mine would not build pressure so I started looking and the pressure adjustment leaver on the pressure regulator was stripped and not opening and closing the valve. I used some epoxy on it to finish spraying last week and have a new pressure regulator coming this week it was like $12.
Posted by GAFF
Georgia
Member since Aug 2010
2450 posts
Posted on 5/28/23 at 6:51 am to
Just an update to those that are curious. Turns out the screw in the pressure switch assembly was stripped out and unable to regulate pressure. Trying to find a replacement now.

I must say I’m very disappointed in the sprayer. The threads are all threaded into plastic and no where deep enough to handle the psi of a pump. This is the third problem I’ve had in less that a year. For $500 I’d expect something built better.
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