High-Quality Rack Manifold for Cold-Plate Liquid Cooling Solutions The MDU030D is a double-row rack manifold with a welded body, built for blind-mate docking inside high-density server racks. Its port positions are held to ±0.15mm , so the couplers engage the rack tray reliably as servers are slid in. Offered in 30x30 / 40x40 / 50x50 mm face sizes and in SUS304 or SUS316L stainless steel, it is gas- and liquid-pressure tested to guarantee zero leakage and rated from -180°C to