Brass Overflow Fitting with 2 Nuts and 2 Gaskets

Multitanks Brass Screw-In Overflow Fitting (Reference: 100440) represents the technical reference solution for efficiently managing overflow in your water storage systems. Designed with premium quality brass, this drainage device offers exceptional durability and optimal corrosion resistance, ensuring lasting performance even in the most demanding conditions.

Applications and Benefits of the Overflow

This brass overflow fitting finds its ideal application in rainwater harvesting, preventing uncontrolled overflow from your 1000L IBC tanks, garden cisterns or storage reservoirs. Homeowners use it to secure their rainwater collection installations, while agricultural professionals integrate it into their irrigation systems to maintain constant water levels.

The device effectively prevents flooding risks around your storage installations, while preserving the structural integrity of your tanks. Its action allows for automatic water level regulation, avoiding overpressure that could damage tank walls or existing connections.

Technical Specifications and Design

The solid brass construction gives this overflow fitting exceptional mechanical properties. Brass, an alloy of copper and zinc, offers natural resistance to oxidation and chemical agents present in rainwater. This composition guarantees superior longevity compared to standard plastic materials.

The 10cm threaded tube allows perfect adaptation to different wall thicknesses, from standard IBC tanks to thicker concrete cisterns. The precise threading ensures optimal tightening and perfect sealing. The 3 included nuts offer installation versatility, allowing mounting adaptation according to your installation's specific configuration.

The 2 flat gaskets provided are dimensioned to create a perfect watertight barrier between the metal and tank walls, preventing any infiltration or leakage at the fixing point.

Installation and Commissioning

Installing this brass overflow requires precise drilling in your tank wall, at the desired height for triggering drainage. Use a hole saw adapted to the threading diameter to obtain a perfectly circular hole. The drilling quality directly determines the final installation's watertightness.

Mounting is performed by manual threading, placing flat gaskets on each side of the wall. Progressively tighten the nuts alternately to evenly distribute pressure on the gaskets. Excessive tightening could damage the gaskets or create stress in the tank wall.

Maintenance is limited to periodic visual inspection of watertightness and occasional tube cleaning to prevent accumulation of plant debris. Brass requires no particular protective treatment, its natural patina strengthening its resistance over time.

Expert Tips and Optimization

To maximize your overflow's efficiency, position it at a height corresponding to 90% of your tank's maximum capacity. This configuration leaves sufficient safety margin while optimizing available storage volume. For a 1000L IBC tank, install the overflow at approximately 1.10m from the ground.

Combine this overflow with a gutter collector and a leaf filter to create a complete rainwater harvesting system. This synergy improves the quality of collected water and extends your installation's lifespan.

Professionals recommend orienting the overflow outlet toward a drainage inspection chamber or drainage system to avoid stagnant water accumulation around the tank. This precaution prevents risks of algae and mosquito proliferation.

In frost-prone regions, periodically check for absence of ice in the drainage tube. An ice plug could temporarily compromise the device's efficiency during rapid thaw periods.

Technical Characteristics