CNC water jet cutting machine is a professional industrial tool, which uses high pressure water knife to cut all kinds of materials. It can use water to cut soft materials such as wood and rubber alone, or it can mix water with abrasive to cut hard materials. Pumps and filters are usually used to introduce water into CNC water jet cutting machine. The filtration process is critical because only clean water can achieve the ultra-high pressure required to generate stable cutting flow. Filtration can also protect high-pressure components, although in some cases water treatment systems may be required if there are harmful minerals in the water.