Quick Disconnect Coupling for Liquid Cooling Solutions The UQD Series is the universal quick disconnect coupling in our liquid cooling family. One body design covers 2, 4, 6 and 8 inch equivalents , so a facility can standardise on a single coupling type across its loops instead of stocking a different part for every line size, and it is rated as universal for both load and working medium. The body is built on a SUS304 or SUS316 stainless base , which keeps the wetted