Overflow Straight Barbed Outlet 38mm

Overflow Straight Barbed Outlet 38mm (Reference: 100053) is an essential technical accessory designed by Multitanks to optimize the management of your rainwater collection systems. Specially designed for 1000-liter IBC tanks, this evacuation device effectively prevents overflows and protects your installations against water overload.

Overflow applications and benefits

This overflow meets the critical needs of water storage tank users, whether they are gardening enthusiasts or agricultural professionals. It acts as an active safety device during intense rainfall episodes, automatically evacuating excess water as soon as the maximum level is reached.

For eco-responsible gardeners, it preserves the integrity of their rainwater collection system by avoiding overpressure that could damage the tank or its connections. Agricultural operators appreciate its reliability for securing their irrigation water reserves, particularly during autumn periods when precipitation is abundant.

Technical design and materials

Manufactured from a high-quality polypropylene and polyethylene alloy, this overflow offers exceptional resistance to environmental constraints. These technical thermoplastics guarantee optimal UV resistance, thermal variations (-20°C to +60°C) and chemical corrosion.

The straight barbed outlet with 38mm diameter ensures perfect compatibility with standard market evacuation hoses. The pre-formed barbs facilitate fitting and create a robust mechanical connection that resists pressure constraints and expansion movements.

The complete kit includes a specialized sealing gasket and a tightening nut sized to ensure permanent fixation on standard thickness tank walls (2 to 6mm).

Installation and commissioning

Installation of this overflow is performed by lateral drilling of the tank, ideally positioned at 80-90% of the total height to optimize useful storage volume. Use a hole saw of appropriate diameter to achieve clean and precise drilling.

The assembly procedure involves inserting the overflow body from inside the tank, positioning the seal on the exterior side, then progressively tightening the nut until optimal gasket compression without excess that could damage it.

For evacuation, connect a 38mm diameter flexible hose to the barbed outlet by slightly forcing the fitting. Direct the outlet toward a natural infiltration area or existing drainage system, respecting a minimum slope of 2% to guarantee gravity flow.

Optimization and expert advice

To maximize your system efficiency, combine this overflow with an upstream leaf filter to avoid outlet obstruction by plant debris. Professionals also recommend installing a shut-off valve on the evacuation line to manually control the drainage level if necessary.

A seasonal inspection before autumn allows checking the seal condition and proper flow in the evacuation line. Clean the barbed outlet with warm water and a soft brush to eliminate calcium or organic deposits.

For industrial installations, consider adding a reduced pressure zone disconnector to the evacuation circuit to comply with current sanitary standards and avoid contaminated water returns to the distribution network.

Technical specifications