The recirculation device also has a 3-way switch, preferably a 3-way valve that is directly downstream of the universal medical container for liquids.

An inlet side of a respective bypass-line (10, 11) is connected to a second output of the same three-way valve.

The output of the thermostat controls the operation of a three-way valve upstream of a radiator or convector in each room.

First through third channels (41-43) are formed in a faucet (40).

The vacuum-sucking switch valve function, the vacuum-breaking switch valve function, and the open-to-air switch valve function are integrally assembled to a main body portion.

A three-way valve (24) is provided on the drainpipe (10).

The valve can be a simple shutoff valve or a three-way valve selectively allowing or blocking refrigerant flow through a particular refrigerant line or lines.

The piping (11) is a three-way cock.

A multiple draught beer dispensing system comprises one tap handle, one spigot, at least three fluid streams, and at least three pressurized tanks corresponding with the fluid streams.

The sealing means further comprises a three-way stopcock or a straight stopcock, having a male taper part and a female taper part.

A pressure sensor (11) is connected with one end of the three-way valve (24), and a lower branch drain pipe (19) is connected with the other end of the three-way valve (24).

The present invention further comprises a four-way and 3 stop valves.

The control loop includes a three-position six-way valve (4) and a first to fifth reversing valves (9).

A manifold main housing (61) contains a purge valve (41) and two three-way solenoids (37, 39) controlling respectively a secondary transfer valve (43) and a pilot nozzle transfer valve (45).

The three-way valve is disposed in the body cavity which has three positioned in series annual chambers.