VCDU 300 (Vacuum CDU) is a main DDLC (dcx direct liquid cooling) system components that provides ultimate safety and high availability features, delivering coolant under negative pressure. VCDU300 has been designed specifically to be fault tolerant and to eliminate potential risks associated with liquid cooling, while keeping maintenance deployment and operating costs low. VCDU system mitigates risk with its patented leakproof design, protects sensitive and costly electronic equipment and provides uptime required for high performance or dense cloud infrastructures. VCDU300 offers all the well-known benefits of liquid cooling without the cost, complexity and risk. The coolant is delivered to the servers and manifolds under negative pressure on both the supply and return so coolant cannot leak out; only air can leak into the system. The VCDU300 is a negative pressure system that uses liquid to cool up to 300kW of server heat. The Vacuum Cooling Distribution Unit (VCDU) can use coolant incomming from drycooler at 15- 30o C (59-86o F) to remove up to 300 kW of server heat (15o C Rise). Its innovative design and energy efficiency allow for effective cooling of servers in high density applications.