Patent ID: 8069950

Claim:
A natural gas compressor lubrication system, comprising: a positive displacement lubricant pump; a pressure relief valve assembly, including: a housing having an opening to the high pressure side of the pump and having a relief passage; a conduit connected from the relief passage to a fluid reservoir; a pressure relief valve having an open position in which fluid from the high pressure side of the pump can enter the relief passage and a closed position in which fluid from the high pressure side of the pump is prevented from entering the relief passage; a biasing element for maintaining a biasing force on the pressure relief valve, the pressure relief valve being maintained in the closed position when the biasing force exceeds the fluid force on the pressure relief valve, and the pressure relief valve moving into the open position when the fluid force on the pressure relief valve exceeds the biasing force on the pressure relief valve; a catch for maintaining the pressure relief valve, after it has been opened, in the open position until the pressure relief valve is manually reset; and a visible indicator to indicate when the pressure relief valve is in the open position; a divider block for distributing the lubricant from the pump to multiple lubrication points associated with one or more compressors.