Problem: No air leaking, but the pressure output from the filling hose is low, around 50Bar, even lower than 50Bar. Solutions: We should check this parts if it is abnormal. replace it if necessary.
Tuxing is an amazing company. They support their products with on-line chat to help resolve issues and will send repair parts DHL Express if a new part is needed, FREE. This RU-vid video and others similar were made to help the customer get the most out their compressor and accessories. I purchased a model TXED012 (2cyl compressor) and I love it. The after-sale service has been fantastic and I recommend this compressor to everyone with no concerns about my reputation because Tuxing makes a great compressor that works very well, is well made, and they back their products 100%. I enjoy the speed my compressor fills my 6.8L air bottle (45 minutes from zero to 4500psi). The bottom line is this: Tuxing is an honorable company you can trust.