The VTA | Fittings | Coupling Protection Shield w/ Cog (ø12 mm) is an OEM safety guard and flexible coupling assembly for the ø12 mm gear pump drive shaft on VTA wiped-film distillation systems. The cog coupling transmits rotational power from the motor to the gear pump while the protection shield prevents accidental contact with the rotating shaft. Ensures safe, reliable gear pump operation during continuous distillation runs. An OEM replacement part for VTA VKL and VKS series gear pump drive assemblies.