Sealed air dryer with turbosaver valve

A braking system for vehicles comprising:

• a source of gas;
• a gas compressor for maintaining the gas pressure in a gas reservoir between a predetermined first pressure level in which the compressor compresses the gas and a predetermined higher second pressure level in which the compressor ceases to compress the gas;
• and
• a gas dryer intermediate the compressor and the reservoir for drying the compressed gas, the gas dryer comprising a gas intake port in communication with the compressor for receiving gas from the intake port and a gas outlet port in communication with the reservoir, a coalescing filter downstream of the intake port for removing contaminants from the gas wherein the coalescing filter has upstream and downstream sides relative to the flow of the gas, a desiccant filter downstream of the coalescing filter for removing moisture from the gas and delivering a portion of the dry gas to the outlet port and purge gas to a purge gas chamber, and a turbosaver valve intermediate the upstream and downstream sides of the coalescing filter for controlling the flow of gas through the coalescing filter so as to permit gas to bypass the coalescing filter when the second pressure level has been reached.

In a system equipped with a gas compressor for maintaining the gas pressure in a gas reservoir between a predetermined first pressure level in which the compressor compresses the gas and a predetermined higher second pressure level in which the compressor ceases to compress the gas, and a gas dryer intermediate the compressor and the reservoir for receiving and drying the compressed gas such that the compressed gas exerts an internal pressure on the gas dryer, the gas dryer comprising:

• a gas intake port in communication with the compressor for receiving the compressed gas from the compressor and a gas outlet port in communication with the reservoir;
• a desiccant filter downstream of the intake port for removing moisture from the gas and delivering a portion of the dry gas to the outlet port and purge gas to a purge gas chamber;
• upper and lower housings for housing the intake and outlet ports, the desiccant filter, and the purge air chamber, each housing having a flange projecting outwardly therefrom at least partially around the circumference of the housing;
• and
• a connecting member being deformed beyond its elastic limit to sealably connect the flanges to each other so that the connecting member must be deformed beyond its elastic limit to remove the connecting member therefrom.