Inlets and outlets: unmissable elements for water flow regulation

In every water storage tank, inlet(s) and outlet(s) are unmissable elements. They regulate the flow of water into and out of the tank. The inlet is where the water goes into the tank from sources like a rainwater harvesting system, canals and boreholes, while the outlet is where the water leaves the water tank to go to other tanks or the point of use.

Inlets and outlets are typically installed at strategic points to ensure efficient water flow. The inlet is often positioned near the top of the tank, while the drain outlet is usually located at or near the bottom to ensure the tank can be fully emptied when needed. The placement depends on factors such as the tank’s size, shape, intended use and the irrigation system’s requirements.

We manufacture conical outlets using customized machinery. Each outlet includes a footplate and a conical sleeve, both of the same material as the silo lining, such as our high-quality FPP. Because of the cone shape, the supplied metal clamp and tape, the outlet fits watertight over the connected pipe. For the most common pipe diameters we supply standard sized outlets, but we can also produce them to specific requirements.

We can also install the outlets “blind”, placing the outlet without creating a hole in the liner. If the tube is eventually not installed at the intended location, the outlet can be removed without damage damaging the liner.

Finally, we also supply the conical outlets separately. Customers can assemble the outlet themselves with a heat gun. We have kits available for self-installation.

When the exact locations of inlets and outlets are not yet determined, a mechanical outlet is the ideal outlet type. These are PVC flanged outlets, consisting of a top and bottom flange, that can be installed on-site using a screw connection.

Mechanical outlets are typically installed at the bottom of the tank and they come in various diameters.

The main advantage of a mechanical outlet is that it allows you to almost completely empty the tank, as the outlet lies flat in the tank bottom.

Galvanised outlets have been specially designed for installation in tank walls to fill and draw water from the tank. They can also be used to empty the tank, but not completely, as the outlet is ideally positioned halfway up the panel, leaving approximately 40 cm of water in the tank.

At nurseries and greenhouses, metal water storage tanks often collect rainwater. Growers must prevent these tanks from overflowing, as this can damage the metal and possibly harm the surroundings.

Different systems can help, such as an overflow, a float system or sensors, with or without digital monitoring.