Sprayer Depot Blog

You may already be expertly familiar with your pump’s pressure regulator, or you might be on the other end of the spectrum wondering how exactly a regulator works. You may call it a control unit or an unloader as these are often terms used interchangeably to describe the same part. Just in case you need a reminder, let's do a quick recap on what a pressure regulator does.

The pump is the heart in the anatomy of a sprayer. This is by far one of the most important parts in your spray equipment. It requires regular maintenance so it can function as efficiently as possible. The 8000 series diaphragm pump is SHURflo's most widely used agricultural pump. There are two styles in this series, automatic-demand and bypass. 

What's the difference you ask? Automatic demand pumps have a pressure switch on the head that will shut the pump off when it reaches the desired pressure rating. When you spray the wand the pump will turn back on because the pressure has been released. Bypass pumps are not equipped with a pressure switch and continuously run when the pump has power to it. 

If your pump suddenly starts acting up use this helpful infographic to troubleshoot it. Whether the pump head leaks or the pump won"t shut-off, check each of these suggestions to pinpoint the problem: