The Drain Valve for Leybold TRIVAC is a replacement drain valve for the Leybold TRIVAC rotary vane vacuum pump, designed to drain oil from the pump sump during oil changes and maintenance procedures. Leybold OEM-compatible construction ensures a proper seal and reliable operation. Regular oil changes using this drain valve are essential for maintaining pump performance and vacuum depth on VTA and UIC wiped-film distillation systems. Sold individually.