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Take control of filling your tank with our selection of IBC tank overflows. An essential safety accessory, the overflow allows excess rainwater to be automatically evacuated to a second tank or to the drainage network once your tank has reached its maximum capacity. It is the ideal solution to protect your installation and avoid soil erosion or stagnant moisture around your tank.
Our overflow kits are easy to install on the top of the bag or on the lid of your 1000 liter tank. Available in different diameters and robust materials (HDPE, PVC), they guarantee smooth and leak-free drainage. Whether you want to pair tanks or simply secure your water collector during heavy rains, Multitanks provides you with reliable and durable components.
Secure your water storage: order your overflow kit and enjoy a serene installation!
A “1/2 inch” thread measures 20.96 mm, not 12.7: in plumbing, the inch size is not converted, it is read from a chart. Here you will find the inch / mm correspondence of every common thread (BSP or “gas thread”, French names 15/21 · 20/27 · 26/34, NPT, S60x6 IBC tanks, Guillemin, Camlock, PVC), a tool that identifies your thread and the fitting that goes with it, and the pitfalls to avoid.
No need to know the name of your thread. Tell us what you need to connect to, or type what you know (“20/27”, “3/4 inch”, “S60x6”, “26.4 mm”): we identify the thread and show you the fittings that go with it. Dimensions according to ISO 228, ISO 7 and ASME B1.20.1.
No need to know the name of your thread. Just answer the question: what do you need to connect to?
With a caliper, measure the outside diameter of a male (thread visible on the outside) or the inside diameter of a female (thread inside the hole), at the root of the thread.
You already know the name of your thread? Type it the way you say it: 20/27, 26/34, 3/4 inch, S60x6… everything works.
Tell us what you have and what you want to get: we look for the matching fitting in our catalogue.
17 products
IBC 1000 L accessories 
Heating jackets 
Fittings 
Drums, jerrycans & fittings 
Seeds 
Plant protection & biocides 
Garden 
Green spaces & municipal 
Barbecue, fire pit & fireplace 
Cleaning & care 
Refrigerants & air conditioning 
Watering 
