The Fittings | Check Valve (ø8 mm) is a one-way flow control valve for ø8 mm tubing in VTA wiped-film distillation systems, preventing backflow of process fluids between the feed, evaporator, and collection stages. Precision-engineered for reliable operation under vacuum and elevated temperatures, this OEM check valve maintains the integrity of the product flow path during continuous distillation runs. Compatible with the ø8 mm compression fittings used throughout VTA VKL and VKS series equipment. Sold individually.