This product supplies a controlled flow of water to a widevariety of laboratory experiment modules. The body of the bench forms areservoir or âsump tankâ with a submersible pump. Once filled, the bench needsno external water supply. The top of the bench provides a working surface. Thiswill hold one of a choice of experiment modules from Fluid Mechanics range.Larger experiments usually stand next to the bench. A rim around the topcontains any spilled or excess water. A small recess or âTroughâ in the topworks with a removeable Drain Valve to trap a small volume of water. It also catchesdischarged water from some experiments in the fluid mechanics range. Ahand-operated control valve adjusts the water flow rate from the pump. Anelectrical box on the side of the bench includes the pump switch, circuitprotection and a digital display of flow.