Abstract: Compressor crankcase oil reclamation methods and systems include a coalescence filter coupled to a pressure relief vent of a compressor crankcase. The filter separates oil from an oil/gas mixture exiting the crankcase. A reservoir receives the oil so-separated. A valve restricts flow of the oil so-separated to a single flow direction running from the reservoir to the crankcase.

Abstract: A liquid storage tank has a breathing valve that vents the tank's headspace at a high-pressure value and admits an ambient gas at a low-pressure value. A controller generates a first control signal when the percentage of the catalyst gas is less than a catalyst threshold, a second control signal when the percentage of the catalyst gas exceeds the catalyst threshold, and a third control signal when the pressure in the headspace is equal to a low-pressure threshold between the breathing valve's low-pressure value and high-pressure value. The first valve is only opened to output inert gas at a discharge pressure greater than the breathing valve's high-pressure value in response to the second control signal. The second valve is only opened to output inert gas at a discharge pressure that is between the breathing valve's low-pressure value and high-pressure value in response to the third control signal.

Abstract: A liquid storage tank has a breathing valve that vents the tank's headspace at a high-pressure value and admits an ambient gas at a low-pressure value. A controller generates a first control signal when the percentage of the catalyst gas is less than a catalyst threshold, a second control signal when the percentage of the catalyst gas exceeds the catalyst threshold, and a third control signal when the pressure in the headspace is equal to a low-pressure threshold between the breathing valve's low-pressure value and high-pressure value. The first valve is only opened to output inert gas at a discharge pressure greater than the breathing valve's high-pressure value in response to the second control signal. The second valve is only opened to output inert gas at a discharge pressure that is between the breathing valve's low-pressure value and high-pressure value in response to the third control signal.

Abstract: A system is disclosed for filling bottles and other fluid holding vessels. In the system, a pressure transducer monitors fluid pressure within a conduit that communicates with fluid filled storage banks. Using a programmable logic controller, valves associated with the banks may be systematically opened to cause fluid to pass though the conduit and into a downstream bottle. As a particular bank has discharged and the downstream bottle is filled the rate of change in the pressure in the conduit will fall to zero. If the bottle has been filled before or upon equalization of the pressure, the fill operation may be discontinued. However, if the bottle is not filled, the controller may then cause the valve to close, and the either activate a compressor or open the valve of a second bank causing that bank to discharge into the conduit and continue filling the bottle.

Abstract: A air shroud for cylinder and cylinder head assemblies of air-cooled compressors and engines of the type having a cooling air fan for producing an axial flow of cooling air and an array of cylinder and cylinder head assemblies arranged in the path of the axial flow and extending radially relative to the axis of said flow. In particular, the shroud has a flow channel portion of a polygonal segment shape which wraps around the periphery of the array of cylinder and cylinder head assemblies and forms an air channel from the cooling air fan to the cylinder and cylinder head assemblies and which is fastened atop each of the cylinder and cylinder head assemblies.