Abstract: An oil separator for separating oil from a refrigerant gas and oil mixture on the high side of a refrigeration/chiller system comprising, a housing having an upper chamber with an inlet for the refrigerant gas and oil mixture, and having a refrigerant gas outlet therefrom, the outlet conduit being connected to multiple outlets for delivery of refrigerant gas to multiple condenser circuits in the system, and said housing also having a lower chamber with an oil outlet therefrom, and at least one oil filter in said upper chamber for removing oil out of the mixture for transfer to the lower chamber.

Abstract: A vertical oil separator for separating oil from a refrigerant gas and oil mixture on the high side of a refrigeration/chiller system comprising, a vertical housing having an upper chamber with a cylindrical sidewall and tangentially oriented inlet for the refrigerant gas and oil mixture, said upper chamber having a refrigerant gas outlet therefrom, said housing also having a lower chamber below the upper chamber with an oil outlet therefrom, a baffle constructed and arranged in said housing to define said upper and lower chamber, at least one oil filter in said upper chamber for removing oil out of the mixture and transferring such oil downwardly from the upper chamber.

Abstract: An oil level regulator is disclosed for use in a refrigeration system which has an oil reservoir and at least one compressor with a crankcase for containing oil. The regulator has a body with an interior fluid chamber for receiving oil. An inlet communicates with the fluid chamber of the body and is connected by a conduit to the oil reservoir of the system. An outlet communicates from the fluid chamber through a conduit through to the crankcase of the compressor. A level detecting mechanism is disposed within the fluid chamber for detecting an oil level therein. The level detector mechanism includes a solenoid assembly which is actuated by the detector mechanism when the oil level within the chamber is determined to be at or below a predetermined level. A microprocessor is provided on the regulator which communicates with the detector mechanism and the solenoid assembly.

Abstract: A sight glass assembly for visually indicating the presence of moisture, oil or an acid in a refrigerant flow of a refrigeration or air conditioning system and a method of manufacture thereof is disclosed. The sight glass assembly includes an indicator cap attached to an in-line connector body. The indicator cap includes a piece of transparent sight glass. The sight glass is attached to the indicator cap and to a retaining tube that holds an indicator material. In a preferred embodiment, the sight glass is attached to the indicator cap and to the retaining tube by at least partially melting the sight glass so that it bonds with the indicator cap and, when the sight glass is in at least a partially molten condition, pressing the retaining tube into an inside surface of the sight glass to fixedly attach the retaining tube to the sight glass.