Abstract: A mobile regeneration apparatus is provided for regenerating dryers. The regeneration apparatus may be used to regenerate single tower desiccant dryers located at natural gas vehicle refueling stations. For optimum performance, each dryer may be located upstream of a respective compressor.

Abstract: A drain valve is disclosed which comprises a float chamber for accumulating a fluid. A float is disposed within the float chamber for fluid level determined movement therein. A pivotable arm is operatively connected to the float. Pilot valve means are provided which comprise valve body means and valve shuttle means. The valve body means receive a portion of the pivotable arm and have a valve seat and an inlet in communication with a source of pressure and an outlet. Valve shuttle means are provided for controlling fluid flow from the float chamber in response to the movement of the float and pivotable arm. The valve shuttle means have a closed position wherein the source of pressure maintains the valve shuttle means in sealed relation with the valve seat and an open position wherein the valve shuttle means is not in sealed relation to the valve seat such that that inlet is communication with the outlet.

Abstract: A mobile regeneration apparatus is provided for regenerating dryers. The regeneration apparatus may be used to regenerate single tower desiccant dryers located at natural gas vehicle refueling stations. For optimum performance, each dryer may be located upstream of a respective compressor.