Water-abrasive-suspension cutting system

A water-abrasive suspension cutting facility, comprising:

• a pressure tank for providing a water-abrasive agent suspension which is under pressure;
• a lock chamber;
• and
• a refilling valve for refilling abrasive agent into the pressure tank via the lock chamber, wherein the refilling valve comprises a valve entry, a valve exit, a valve space arranged between the valve entry and the valve exit, and a valve body located in the valve space, wherein the valve entry is connected to the lock chamber and the valve exit to the pressure tank, the refilling valve comprising a first closure position, a first open position and a second open position, wherein the lock chamber is fluid-separated from the pressure tank in the first closure position and the lock chamber is fluid-connected to the pressure tank in the first open position and the second open position, wherein the valve space comprises a pressure inlet, via which the valve space is configured be pressurized in the closure position of the valve body, wherein the valve space comprises a purge inlet and a purge outlet, via which the valve space can be purged, the purge inlet and the purge outlet being located at a spaced location from the pressure inlet.