Refrigeration Oil Reservoir

Oil Reservoirs are necessary on multiple, parallel compressor systems. They act as a holding vessel ready to feed oil to the oil level regulators as needed to maintain the proper oil level at each individual compressor and are essential for maintaining the proper balance of oil throughout the system. The valve at the top receives the oil from the oil separator while the valve at the bottom distributes it to the compressor crankcases. The top valve provides a convenient access port for adding oil to the system and the bottom valve likewise provides an access valve for removing oil if necessary based on the level indicated by the sight glasses. There is also a fitting at the top to attach the vent line with the pressure differential valve which regulates the pressure in the reservoir.

Oil reservoirs are storage tanks that receive oil from oil separator and provide its return to the compressor’s crankcase through oil level regulator. Amount of oil circulating in a system varies depending on operating conditions. Oil reservoir prevents compressor’s crankcase from staying without oil during potential ?uctuations by providing additional storage capacity. Oil reservoir prevents liquid refrigerant from flowing to the oil level regulators and therefore ?uctuations in the oil level caused by compressors are prevented.