Intake Valve Repair Kits: What Is Inside, and When to Rebuild Instead of Replace
Intake Valve Repair Kits: What Is Inside, and When to Rebuild Instead of Replace Read More »
2026
VFD vs Fixed-Speed Screw Compressors: Which Parts Are Not Interchangeable
Which parts differ between a variable speed and a fixed speed screw compressor, why mixing them fails, and a retrofit checklist before you convert a machine.
VFD vs Fixed-Speed Screw Compressors: Which Parts Are Not Interchangeable Read More »
Oil Sight Glass, Oil Return Check Valve and Minimum Pressure Valve: Three Small Parts That Decide Compressor Reliability
How the oil sight glass, separator scavenge check valve and minimum pressure valve work on a screw compressor, how each one fails, and how to tell them apart.
Screw Air Compressor Coupling: Types, Selection and Noise Diagnosis
Identify a screw compressor coupling by its noise, size the elastomer insert correctly, and set alignment tolerances that stop repeat failures.
Screw Air Compressor Coupling: Types, Selection and Noise Diagnosis Read More »
Air, Oil and Separator Filters: Replacement Intervals and Rejection Criteria
How to set air, oil and separator filter change intervals on a screw compressor, plus the field tests that prove an element is finished and not just dirty.
Air, Oil and Separator Filters: Replacement Intervals and Rejection Criteria Read More »
MPV vs CTV: Minimum Pressure Valve and Combination Valve Explained
Two valves on the discharge side of a screw compressor are constantly confused: the minimum pressure valve (MPV) and the combination valve (CTV — combined valve). They sit in the same part of the machine, they look similar from the outside, and on many machines they perform overlapping jobs. This guide explains what each one
MPV vs CTV: Minimum Pressure Valve and Combination Valve Explained Read More »