Railway facilities: Case study of the adoption of a pressurized drainage pump unit in a subway station pastry shop.

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last updated：Jan 29, 2026

The drainage with plenty of fat from the pastry shop is safe with a model equipped with cleaning functions!

We would like to introduce a case where the "Wastewater Big NPC (BG-200NPC)" was adopted in a pastry shop located within a subway station's railway facility. In this case, there was a challenge in that it was impossible to install drainage pipes when setting up the shop in the subway station. Due to the high content of fats such as butter in the wastewater, a product that allows for self-maintenance (cleaning) was chosen. For maintenance purposes, a faucet and lighting fixtures were provided in the pump room, and since it was difficult to install ventilation pipes, a Canister L was set up. 【Case Overview (Partial)】 ■ Installation Location: Pastry shop within a subway station ■ Model: Discontinued Wastewater Big NPC (BG-200NPC) ■ Connection Equipment: Grease trap *For more details, please download the PDF or feel free to contact us.

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【Summary of Other Cases (Partial)】 ■Issues <Requests> - It is impossible to install drainage pipes when opening a store inside the subway station. ■Proposed Content <Key Points in Design and Construction> - A lift height of 7m is required. - Since the drainage contains a high amount of fats such as butter, a self-maintaining (cleaning) large waste drainage NPC was adopted. - A faucet and lighting fixtures were provided in the pump room for maintenance. - Due to difficulties in installing ventilation pipes, a Canister L was installed. *For more details, please download the PDF or feel free to contact us.