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To install an emergency shut-off valve, it is necessary to create a bypass pipeline outside the water distribution reservoir and build a pit for the installation. In some locations, it may not be possible to secure that space, forcing the abandonment of the installation of the emergency shut-off valve. As a result, the risk of drinking water leakage due to damage to the main water distribution pipe caused by earthquakes and other disasters remains unresolved. Therefore, by installing the valve of the emergency shut-off valve in the outflow pipe inside the water distribution reservoir and connecting a valve rod that rises from the valve to the drive unit installed at the top of the reservoir, we can secure the installation space. There will be no need to secure new installation space outside the water distribution reservoir. [Issue] ■ In some locations, there may be cases where the installation of the emergency shut-off valve is abandoned. *For more details, please refer to the PDF document or feel free to contact us.

In the case of a single-chamber distribution reservoir, if you try to install an emergency shut-off valve outside the reservoir, it will need to be placed on the main distribution pipe. If you want to carry out continuous water work to avoid water outages, space will be required to install a bypass pipeline, and if space cannot be secured, the emergency shut-off valve cannot be installed. Therefore, if the valve of the emergency shut-off valve is installed on the outflow pipe inside the distribution reservoir, construction work can be carried out through diving operations. Since work underwater will only involve flange connection work, installation can be carried out without shutting off the water. [Issues] - There are cases where a bypass pipeline cannot be installed, resulting in an inability to shut off the water. - If space cannot be secured, the emergency shut-off valve cannot be installed. - Even if space is secured, new construction costs will arise. *For more details, please refer to the PDF document or feel free to contact us.

In Nakatsugawa City, there was no space around the Okute water reservoir in the Ochiai area of the water supply system, and acquiring nearby land was also difficult, which led to a deadlock in the installation of emergency shut-off valves. Therefore, an underwater emergency shut-off valve "NCS-A-150" was installed in one of the two water reservoirs on the outflow pipe inside the reservoir. By installing the valve controller at the top of the reservoir, we were able to clear the issue of installation space without acquiring land. As a result, we were able to eliminate the risk of drinking water loss due to pipeline damage caused by disasters such as earthquakes. 【Overview】 ■ Location: Nakatsugawa City, Gifu Prefecture ■ Implementation Period: Fiscal Year 2017 ■ Construction Summary - Installation of underwater emergency shut-off valve NCS-A-150 in a two-tank reinforced concrete water reservoir with a capacity of 300m3 in Nakatsugawa City water supply system. *For more details, please refer to the PDF document or feel free to contact us.

The "NCS Series" is an underwater emergency water shut-off system that adopts a design with a shut-off valve installed inside the water distribution reservoir. By installing the shut-off valve inside the reservoir, it is possible to securely retain the water in the reservoir during disasters such as major earthquakes that may cause pipeline damage and leakage. Additionally, by ensuring a certain amount of water, it allows for the early initiation of water supply activities after pipeline restoration. 【Features】 ■ Adopts an underwater design with a shut-off valve installed inside the water distribution reservoir ■ No need for a valve chamber ■ Reduces piping work ■ Space-saving as no pit is required ■ Easy installation with a short construction period ■ Versatile operation control *For more details, please refer to the PDF document or feel free to contact us.

The "NCB series" is a pipeline-type emergency shut-off valve that allows for arbitrary setting of intermediate valve opening degrees with versatile operation control. By adopting electric double-layer capacitors, it can be reliably operated even during power outages. Unlike conventional batteries, it can be charged in a few seconds, and even when fully charged, it experiences minimal degradation and has a long lifespan. Additionally, we also offer the underwater emergency water shut-off system "NCS series," which can be installed inside a water reservoir. 【Features】 <NCB series> ■ Equipped with failure prevention protection and self-diagnosis functions ■ Memory function that records operational information retains data even when power is cut ■ Communication function allows management of operational history via PC ■ Various control systems can be constructed through combinations of sensors ■ Verified operation in cold regions (-10°C) (when the backup power supply is a DC power source) *For more details, please refer to the PDF materials or feel free to contact us.

【Features】 ■ Submersible emergency shut-off valve installed inside the water distribution tank ■ Installation possible through diving work in water distribution tanks where water cannot be cut off ■ No valve chamber required, reducing civil engineering work and shortening construction time ■ Made of rust-resistant stainless steel ■ Powered by an electric double-layer capacitor We also handle pipeline types. *For more details, please refer to the PDF materials or feel free to contact us.