How-To Blogs & Videos

When your air compressor runs for what seems like no reason, or you hear a constant hiss, a tiny but vital part may be the culprit: the check valve. At Master Tool Repair, we've helped countless customers diagnose this common issue, and we're here to explain why this small component is so important. What is an Air Compressor Check Valve? The check valve is a one-way valve located on your air compressor's tank. Its primary job is to allow compressed air to flow from the pump into the tank, but pr …