Arrangement for handling a liquid medium

An arrangement for managing a liquid medium comprising:

• a single piece housing having a longitudinal axis, wherein the housing defines an inlet chamber at a first end of the housing for the liquid medium and an outlet chamber at a second end of the housing for the liquid medium, said inlet chamber and said outlet chamber being coaxially aligned along the longitudinal axis of the single piece housing and being separated from one another or coupled to one another by a pressure-reducing valve that is integrated with said housing such that when an outlet chamber pressure prevailing in the outlet chamber is lower than a limit value, the pressure-reducing valve is automatically opened in order to couple the inlet chamber and the outlet chamber, and such that when the outlet chamber pressure prevailing in the outlet chamber is higher than the limit value, the pressure-reducing valve is automatically closed in order to separate the inlet chamber and the outlet chamber;
• a first backflow prevention valve in the inlet chamber of the housing coaxially aligned along the longitudinal axis of the single piece housing;
• a second backflow prevention valve in the inlet chamber of the housing coaxially aligned along the longitudinal axis of the single piece housing;
• wherein the two backflow prevention valves in the inlet chamber of the housing subdivide the inlet chamber into three subchambers, wherein a subchamber formed between the two backflow prevention valves has a volume smaller than a volume of each of the other two sub-chambers;
• a manually actuatable shut-off valve integrated with the housing in such a way that the manually actuatable shut-off valve is coaxially aligned with the pressure-reducing valve, said manually actuatable shut-off valve having a closed position and an open position, wherein in the closed position the manually actuatable shut-off valve keeps the pressure-reducing valve closed regardless of the outlet chamber pressure prevailing in the outlet chamber, and in the open position the manually actuatable shut-off valve allows the automatic opening and closing of the pressure-reducing valve depending on the outlet chamber pressure prevailing in the outlet chamber;
• and
• a plurality of test connection pieces integrated with the housing, including a first test connection piece located at and connected to the inlet chamber of the housing upstream of the pressure-reducing valve and a second test connection piece located at and connected to the outlet chamber of the housing downstream of the pressure-reducing valve, wherein the first test connection piece is connected to the subchamber of the inlet chamber that is formed between the two backflow prevention valves and having the volume that is smaller than the volume of each of the other two sub-chambers of the inlet chamber,
• wherein the pressure-reducing valve and the manually actuatable shut-off valve are inclined relative to the longitudinal axis of the single piece housing.