Liquid-Filled or Dry? Small-plot agricultural sprayers should have a pressure gauge on the wand or boom to ensure accurate application rates. Most are added after-market and the operator has the choice of buying liquid-filled or dry gauges. Glycerine- or silicone-filled gauges are preferred because they dampen pressure spikes, pulsation and mechanical vibration. Compared to dry […]
Tag: gauge
Pressure spikes and relief valves on air-assist sprayers
A properly-sized pump should produce more flow than is needed and work in conjunction with the atomizers to regulate that flow. Typical to high pressure pumps, a piston relief valve (aka regulator) should maintain the desired system pressure through the normal speed range of the sprayer, regardless of the number of booms (or boom-sections) that […]
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Does Higher Pressure Increase Spray Penetration?
A very common question we hear at sprayer demonstrations is: “I want to drive the spray deeper into the canopy – does higher pressure help?” Well, here’s the classic government answer: “…yes and no.” It depends on two things. First, the size of the droplet and second, your tolerance for drift (ours is almost zero, […]
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The Pressure Gauge Shows More Than Pressure
Kim Blagborne (formally with Slimline Manufacturing) has long said that the pressure gauge on an airblast sprayer indicates more than just pressure. It can be used to diagnose a number of pump and plumbing issues… if you know what to look for. Here’s Kim’s troubleshooting guide to reading into what your gauge is REALLY telling […]
Making the Pressure Gauge your Speedometer – Tips with Tom #4
Good spray quality is essential in application, but all of the factors involved can make getting there quite a challenge. In reviewing magazines, you may see that publishers will bold a certain pressure (like 40 psi). They do this not because that is the pressure the nozzle must experience, but because that is the pressure […]
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