How-To Blogs & Videos

This short video shows how to adjust a pressure switch. Pressure Switch Adjustment Procedure Adjusting pressure switches can be difficult and time consuming unless a uniform and correct approach is used.  The following instructions are based on adjusting the most common pressure switches.  On 69H style switches the large metallic screw (A) is used first to adjust the cut-in pressure (the point at which the compressor comes on as system pressure decreases).  The sm …

This short video shows how to adjust a pilot unloader valve. IMPORTANT:Be sure to check the low and high RPM’S on the engine (e.g. the high RPM at 3,400 and the low RPM at 2,200). If the low RPM setting is too low, it can cause the engine to shut down, at the low idle speed. Oftentimes, when a pilot valve "chatters", it's due to the differential being set too close together. What this means is instead of, say, an idle PSI of 95 and a cut-off PSI of 125, it could be closer to 110/125 or 115/125. …

This video is a short video on How To Choose Air Compressor Oil. We receive many phone calls on this subject, daily, regarding which air compressor oil to use in an air compressor unit. Here, we give a brief explanation of air compress oil: how to choose oil, the difference in types of compressor oil, etc... Air Compressor Oil If you have purchased a new air compressor, please follow the advice of the manufacturer in determining which oil (or type of oil) to use in a new unit. Some co …

This short check valve video shows the different types of check valves and how to choose a check valve for your unit.How to Choose the Correct Check Valve To find out the MPT size of the outlet threads you will need to measure the outside diameter (“O.D.”) of the threads going into the tank. The “MPT” size will always measure ¼” under the actual O.D. measurement of the threads. Hence, if the O.D. of the threads is 1”, you will need a ¾”MPT check valve, if the O.D. is ¾” you will need a ½”MPT che …

This short video shows how to find a model number on a Campbell Hausfeld air compressor.