Labor-saving! Underground beam section "Pipe-in-sleeve T-type" water immersion countermeasures and waterproofing.

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basic information

<Specifications> ●Waterproofness ・Test value (smooth inner surface pipe) 0.1MPa×72 hours (This product does not guarantee complete waterproofing) ◆PVC sleeve outer circumference "drainage flange" 6mm thick * 50mm wide welded with the same material◆ ●Composition ・Sleeve material: Rigid polyvinyl chloride pipe (JIS K 6741) VU pipe ・Sleeve penetration pipe: Underground buried electric wire protection pipe, Furukawa Electric Co., Ltd. Eflex (or flame-retardant Eflex) ・Sealing material: Cured waterproof material filled in two places <Notes> * There is no waterproof test performance value for the "drainage flange" welding process. * Please select the FEP/penetration pipe connection material from Furukawa Electric Co., Ltd. Eflex series. * The "waterproof performance" of the sealing material (cured waterproof material) is an internal measurement value and is not a guaranteed value. [Contact Information] ・Planning/Proposal: Furukawa Elecom Co., Ltd. New Business Promotion Office TEL: 03-5297-8711 FAX: 03-5297-8705 ・Design/Manufacturing: EPJ Co., Ltd. TEL: 03-5643-8137 FAX: 03-5643-8138 Email: info@epj-inc.co.jp

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Applications/Examples of results

*R2.6 National Public Works Publication "Guidelines for Flood Prevention Measures for Electrical Equipment in Buildings" *R3.4 (Public Foundation) Japan Sewerage New Technology Organization "Promotion of Waterproofing (Final Version)" The adoption of these measures in construction work is rapidly increasing. "Pipe-in-Sleeve (PIS)" <Excerpt from Adoption Records by Local Governments> (Statistics from January to March 2026) - Osaka Prefecture ●● City) Communication equipment and other construction work related to the expansion of ●●●● - Shizuoka Prefecture ●● City) Electrical equipment construction for the (tentative name) ●● District Center in fiscal year 7 - Kyoto Prefecture ●● City) Electrical equipment construction related to the new building construction of ●● City Hospital (Section 1) - Kanagawa Prefecture ●● City) Electrical equipment construction for the expansion of ●● Elementary School building No. 1, among others Due to the recent shortage of construction workers and skilled labor, while "easy installation" is possible, there are also materials/methods that underestimate waterproof performance, leading to an increasing trend in leakage problems with underground beams in recent years. To prevent leakage accidents from resulting in large-scale repair work later on, we advocate for the adoption of Pipe-in-Sleeve (abbreviated as PIS), which combines both "labor-saving at construction sites" and "ensuring the waterproof performance of buildings."

Detailed information

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  Pipe-in-sleeve installation 1

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  Pipe-in-sleeve installation 2

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  Pipe-in-sleeve installation 3

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  Before pipe-in-sleeve demolition

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  After pipe-in-sleeve demolition

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  Pipe-in-sleeve connection preparation complete.

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  Pipe-in-sleeve connection work 1

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  Pipe-in-sleeve connection completed.

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  Pipe-in-sleeve connection completed (close-up)

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