Constructing a Sprayer: Part 2
Speaker 1: All right, so here’s your pump and you’re going to put it together, I guess.
Speaker 2: Yeah, first we’ve got a PTO coupler and it’s just got a little set screw to go on the flat
side of our shaft. I’m going to put this on here and tighten this down, and we’ll be ready to go on with that.
Speaker 1: Now, are there single assembly pumps that you can get that just come all together with the PTO, or does this seem to work pretty well?
Speaker 2: Generally you want to buy the two things separate. That way if you’ve got this, your pump goes bad, you just buy a new pump. You’ve got this. Because these are 20 to $40, depending on what you get for options.
Speaker 1: Right.
Speaker 2: I guess you don’t want to buy a new one every time…
Speaker 1: Every time.
Speaker 2: You need one. You can also rebuild these pumps as well. It’s just a roller pump and it’s got little rollers inside that spin around. The nice thing is over time as it starts to wear, it’s got product going through it, you can go ahead and rebuild it if you need to. Basically, we’re just going to put a couple little fittings in here for the inlet. The nice thing about the pumps is they’re labeled. This is the inside, it says “in” on it. They’re setup to run on PTO as well. That’s their design, that they’re set up for that type of rotation. You can buy kits to reverse the rotation if you end up putting it on a little engine or something like that…
Speaker 1: Oh, okay.
Speaker 2: If you want to put it on a little gas engine and run a pump that way. They’re primarily thought that, “Okay, you’re going to put it on a PTO.”
Speaker 1: Right.
Speaker 2: The nice thing about the roller pumps as well is this pump is designed to turn about five or 600 RPM, which matches our 540 really well…
Speaker 1: Right.
Speaker 2: O n our PTO, so it’s about as simple as you can get for going to a sprayer pump.
Speaker 1: Great. Great. You put a little tape on there, plumber’s tape?
Speaker 2: Put a little Teflon tape on here.
Speaker 1: A little elbow grease.
Speaker 2: Yeah, and then kind of tighten those up a little bit. One thing you have to do, this is typically … it’s probably going to go inside of a PTO shield. The shield on the tractor that it’s going to be on most of the time is wide enough to handle the two elbows that I put in here. These are going to be facing straight back.
Speaker 1: Okay.
Speaker 2: That way when I take the shield off the tractor to put the pump on … and in some cases you will have to remove that shield to put a pump on. If that’s the case, then everything else should be shielded within itself.
Speaker 1: Okay.
Speaker 2: Safety first.
Speaker 1: Right.
Speaker 1: I guess now we want to put the valves together.
Speaker 2: Yeah, we got the pump on the tractor. We’ve got a hose to that, so now we’ve got to get our valve assembly together to know how long that hose has got to be…
Speaker 1: Right.
Speaker 2: To where we’re going to go there. Basically, we’ve just got some pipe nipples, we’ll put some tape on them. These things will go together like this. We’ve got our pressure relief valve that’s going to go on here, come out of the bottom of it back to the tank for our agitation. Then our pressure gauge will go right in the end here and we’ll angle that, again, back towards the operator so they can see it. We’ve got pipe nipples that will come in to the bottom of the valve, and then this will go to the boom. One of them will go to a hand gun, one of them will go to the boom. One of the choices that we made on this was it’s only a 30-foot boom, so we’re putting one valve on it…
Speaker 1: Right.
Speaker 2: To run the whole boom off of one. Whereas you could have the option to run three valves and have a center section. Or if you wanted to run just one wing separate so you could spray along a fence line, or a road ditch or something like that, you could do that.
Speaker 1: Okay.
Speaker 2: This is primarily a pasture sprayer, so we’re going to set it up and run it like that.
Speaker 1: Okay.