An exchanger tap, particularly for refrigeration cycle plants, which comprises a tap body provided with a main body and a secondary body, which are respectively adapted to be connected to a first and to a second safety valve, and an inlet adapted to be coupled to a refrigeration cycle plant; at least the inlet adapted to be connected to the refrigeration cycle plant is provided with a rotatable ring for screwing the tap to the refrigeration cycle plant, the ring being rotatable with respect to the body of the tap.

A fluid end assembly comprising a housing having multiple conduits formed therein. A tubular sleeve is installed within one of the conduits and is configured to house a plurality of packing seals. A seal is installed within a groove formed in the walls of the housing surrounding the tubular sleeve such that the seal engages an outer surface of the tubular sleeve.

Provided are a three-way valve for flow rate control and a temperature control device, which have improved sealing performance against a fluid having a low temperature of about 85 C. as compared to a case in which a pressure applying portion does not include a communication member having a cylindrical shape with both end portions in a longitudinal direction sealed by sealing means including a coating member, which has a substantially U-shaped cross section and is made of a synthetic resin, and is urged in an opening direction by a spring member made of a metal. The pressure applying portion includes the communication member having a cylindrical shape, which allows inner surfaces of first and second valve port forming members and first and second outflow ports to communicate with each other, and in which both end portions in the longitudinal direction are each sealed by the sealing means including the coating member, which has a substantially U-shaped cross section and is made of a synthetic resin, and is urged in the opening direction by the spring member made of a metal.

A fluid end assembly comprising a housing having multiple conduits formed therein. A tubular sleeve is installed within one of the conduits and is configured to house a plurality of packing seals. A seal is installed within a groove formed in the walls of the housing surrounding the tubular sleeve such that the seal engages an outer surface of the tubular sleeve.