Abstract: A refrigeration system comprising: a duct; a compressor having an inlet and an outlet; a reheat coil located in the duct and having an outlet and an inlet operatively connected to the compressor outlet; and a condenser having an outlet, and an inlet operatively connected to the reheat coil outlet. The system also comprises an expansion device, an evaporator and a receiver system. The expansion device has an outlet, and an inlet operatively connected to the condenser outlet. The evaporator is located in the duct upstream of the reheat coil and has an inlet operatively connected to the expansion device outlet, and has an outlet operatively connected to the compressor inlet. The receiver system has an inlet operatively connected to the condenser outlet and has an outlet operatively connected to the evaporator inlet. The receiver system includes an upstream flow control device, a receiver and a downstream flow control device in series.

Abstract: An assured supply of lubricant to the compressor in a refrigeration chiller is provided by a reservoir that is connected in parallel with the main line by which lubricant is supplied to the compressor. The reservoir is connected to the main lubricant supply line in a manner such that if the lubricant supply line is blown dry, as can occur as a result of an unusual or abnormal chiller shutdown condition, a critical portion of the supply line will be refilled by the reservoir relatively very quickly which assures the immediate availability of lubricant to the compressor from that portion of the lubricant supply line when it next starts up.

Abstract: A condensate drain pan. The drain pan comprises a frame supporting a surface; a side outlet in the frame proximal a high point; and a bottom outlet in the surface proximal a low point. The surface is sloped so that the first side drains to the side outlet; the surface is sloped so that the second side drains to the bottom outlet; and the surface is sloped from the high point to the low point.

Abstract: In a preferred embodiment, a single motor drives both oil and refrigerant pumps in a refrigeration chiller, the motor and oil pump being disposed in the chiller's oil supply tank and the refrigerant pump being disposed exterior thereof. The refrigerant pump pumps liquid refrigerant to the chiller's compressor section so as to cool the motor by which the compressor is driven while the oil pump pumps oil to chiller locations that require lubrication when the chiller is in operation. A uniquely designed impeller permits low pressure liquid refrigerant in its liquid state to be reliably pumped to a location of use, without significant flashing, from a source location which is at a height only a short distance above the pump inlet. A stand alone refrigerant pump embodiment is also described.

Abstract: A method of mounting a compressor above a heat exchanger. The method comprises the steps of: attaching a transfer device to the exterior of the heat exchanger where the transfer device has a lower arc surface and an upper sloped surface; positioning the compressor relative to a reference point to form a gap between the compressor and the heat exchanger; and placing a positioning device in the gap. The positioning device includes a lower sloped surface in slideable contact with the upper sloped surface of the transfer device. The method also includes the steps of: adjusting the positioning device so that the top surface of the positioning device contacts the compressor; and securing the positioning device to the heat exchanger and to the compressor.

Abstract: The present invention is a device which includes a connecting coupling for connection with hydromassage water circulation pipes, the connecting coupling having first coupling portion with a first aperture connected with an inlet of a hydromassage orifice, a second coupling portion with a second aperture axially opposed to the first aperture, and at least a third coupling portion with at least a third aperture, arranged at an angle with respect to the first aperture, the third aperture connected with a water circulation pipe. The device also includes a plug, capable of closing the first aperture, which is axially movable, within a coupling chamber, between the first and the second aperture and which is supported by a stem placed axially through the second aperture. Externally to the coupling, a mechanism is provided which is capable of displacing the stem of the plug axially, so as to bring the plug alternately against the first aperture, or below, at some distance from the latter.

Abstract: A method of controlling chiller capacity in a chiller system. The method comprises the steps of: measuring entering the fluid temperature of a fluid entering a heat exchanger; measuring the fluid temperature of the fluid leaving the heat exchanger; determining a desired leaving fluid temperature; establishing chiller capacity as a function of the difference between leaving fluid temperature and the desired leaving fluid temperature; and adjusting the determined chiller capacity as a function of the difference between entering fluid temperature and the desired leaving fluid temperature.

Abstract: A sanitary fitting with a cartridge, a mixer and a spout which is built integrally with a housing and can be swivelled around the mixer, whereby the housing glides on at least one sliding ring located in a groove provided in the mixer. The external dimensions of the fitting are kept as small as possible. The diameter of the mixer is smaller than the diameter of the cartridge and a spacer, preferably made of plastic, is placed between the cartridge and the mixer, whereby the spacer has on the side facing the cartridge at least the diameter of the cartridge. Alternatively or in addition, a washer can be inserted into the groove for the sliding ring to seal the mixer from the housing.

Abstract: A plaster guard for a concealed sanitary valve which can be controlled by means of a valve control element such as a valve spindle or a valve control disc. The plaster guard is equipped with a tool to operate the valve control element.