Where is the technical info on sprayers

[Briar Hill Brittanys]

Good lookin' sprayer jdm0125 :thumbsup: . Here's my version, Rev B as it were. The boom is WAAAY overbuilt. It's a 12'collapsable boom, tips are on 20" spacing. The pump is a 6 roller Silver Series, tank is 35 gallons. Got the tank from Craigslist, the 12V solenoid valves, spray gun, and roller pump from ebay. This is the third year on the pump, when it's put away I fill it with regular anti-freeze and cap the suction and discharge. No problems with locking up as the antifreeze has corrosion inhibitors in it. I just flush a few gallons of fresh water through the system before using. Since the pictures were taken, I've added 2 additional solenoid valves to have the ability to spray left, right, center or any combination by the flick of a switch. This winter I'm planning on a foam marker. I've got a little over $400.00 in it, and way over that in satisfaction during fabrication. The chains hanging on the end of the boom are to set the recommended 20" height for spraying. Mark.

This picture shows the on-board storage for the roller pump.

A close-up of the manifold. When using the boom, I set the RPMs for 44PSI, tractor in 2nd gear. The pressure drops to the recommended 40PSI when the boom is opened. Pressure varies when using the gun, depending on how far I need to spray.

 

[jdm0125]

Man that is an awesome setup. Is there a way to regulate pressure and still be able to turn up the RPM some? I need to put a pressure gauge on mine. I used it for the first time today spraying my garden and when I would turn the RPM up to about 12 I have two hoses kept blowing off. I have no idea what size pump I was given but it will build up pressure.

 

[boggen]

Man that is an awesome setup. Is there a way to regulate pressure and still be able to turn up the RPM some? I need to put a pressure gauge on mine. I used it for the first time today spraying my garden and when I would turn the RPM up to about 12 I have two hoses kept blowing off. I have no idea what size pump I was given but it will build up pressure.

get a 3 way valve (1 inlet, 2 outlets).

outlet on pump -> inlet on 3 way valve
outlet on 3 way valve -> a hose that goes back to tank
outlet on 3 way valve -> gauge -> to booms, or spray gun.

you adjust how much goes to booms. via 3 way valve. and figure out pressure via gauge.

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you could also get a regulator and/or use a pressure relief valve.

outlet on pump -> gauge (for setting pressure relief valve) -> tee
tee -> pressure relief valve -> a hose that goes back to tank
tee -> regulator -> gauge -> to booms, or spray gun.

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never got into pressure relief valves / regulators. when i recently built a sprayer, due to having an on demand 12v pump that has a pressure sensor on the pump. and no need for 3way valve, or regulator or pressure relief.

 

[mjncad]

Nice job on the sprayer Briar Hill.

 

[Briar Hill Brittanys]

Look at the picture showing the manifold. On the far left, piped into the el, is a pressure regulator ( Has Hamilton printed on it). It has a brass T handle on top. I kind of left that out of the sequence. Bring the tractor Rs up to what's needed to get the desired groundspeed, adjust the T to get desired pressure. Anything over the indicated pressure gets pumped back into the tank, where it's delivered to the bottom, to agitate and keep the solution mixed. In my first build, the regulator relief line just plumbed into the top of the tank. It worked the same, just foamed up BIG TIME when spraying glyphosate with surfactant. This picture shows the relief line in the top of the tank.

This picture is a diagram of the plumbing. It's very simple.

 

[jdm0125]

Thank you. That diagram will really make it a lot easier.