Labor-saving! Waterproof sleeve for underground outer walls (underground beams) Pipe-in-Sleeve.

PIS

EPJ

[Official Release] Waterproof Sleeve for Underground Walls "Pipe-in-Sleeve" (Abbreviated as PIS) Reducing Labor at Construction Sites! Enhancing Waterproof Performance of Buildings!

■Recently, our "Pipe-in-Sleeve," showcased at the JECA Fair 2025, is officially released with great anticipation.■ In the underground wall section (underground beam sleeve), we have pre-treated the PVC sleeve and the outer space (gap) of the FEP with "waterproof treatment" at the factory, making it prefabricated for the site. On-site, there is no need for cumbersome work; after installing the PIS, basically only joint connections are required. It ensures stable waterproofing! Achieving work efficiency and promoting flood prevention and water resistance. This is an innovative and advanced product for underground beam sleeve construction. <Features> ■ Excellent waterproof performance [Flood prevention and water resistance promotion] ■ Proposal for labor-saving at construction sites ■ Adaptable to individual project design specifications ■ Improved work efficiency, standardized quality, and enhanced maintainability [To Designers and Contractors] FEP pipe through-piping, bell mouth terminal installation, connection of different pipes (AQ type), and various connection parts of Eflex can be arranged according to the specifications of each construction site! Furthermore, it can also respond to unexpected water leaks! It combines maintenance and serviceability, making it a versatile and highly adaptable product. (Feel free to request drawings as well)

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Labor-saving! Waterproof sleeve for underground outer walls (underground beams) Pipe-in-Sleeve.

INUyTNQs4oz3EeI1762415807_1762415845_Deblur.jpg
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basic information

<Specifications> ●Water Resistance ・Test Value (Smooth Inner Pipe) 0.1MPa×72 hours (This product does not guarantee complete waterproofing.) ●Composition ・Sleeve Material: Rigid Polyvinyl Chloride Pipe (JIS K 6741) ・Sleeve Penetration Pipe: Underground Electric Wire Protection Pipe, Furukawa Electric Co., Ltd. Eflex ・Sealing Material: Curing Waterproof Material <Notes> *This product does not include a "water stop ring." Please prepare a water stop material that matches the outer diameter of the sleeve according to the manufacturer's specifications. *For FEP/penetration pipe connections, please select straight joints and different pipe joints (AQ type) from the Aqua series of Furukawa Electric Co., Ltd. *The "waterproof performance" of the sealing material (curing waterproof material) is based on internal measurement values and is not guaranteed. [Contact Information] ・Planning and Proposal: Furukawa Elecom Co., Ltd. New Business Promotion Office TEL: +81 3-5297-8711 FAX: +81 3-5297-8705 ・Design and Manufacturing: EPJ INC. TEL: +81 3-5643-8137 FAX: +81 3-5643-8138 Email: info@epj-inc.co.jp

Price range

P1

Delivery Time

P1

Applications/Examples of results

■Development Concept■ "Labor-saving in Construction Sites" In modern construction projects, the aging of skilled workers and the departure of young people have led to a constant demand for both work efficiency and construction quality. By utilizing "prefabrication technology," we aim to solve the persistent issues at construction sites and extend the lifespan of buildings. Furthermore, we are developing groundbreaking products that also incorporate maintenance and upkeep performance! "Enhancing the Waterproofing Performance of Buildings" At each construction site, the narrow gaps between the pit, underground beam sleeves, and penetrating pipes require "waterstop treatment" as mandated. According to the "Guidelines for Flood Prevention Measures for Electrical Equipment in Buildings" issued by the Ministry of Land, Infrastructure, Transport and Tourism and the Ministry of Economy, Trade and Industry, we are advocating for the development of products that possess safe and reliable waterproofing performance! <Areas of Demand> Underground beam sleeves (subterranean outer wall sections) for various construction projects <Countermeasure Types> - Flood prevention construction: Guidelines for Flood Prevention Measures for Electrical Equipment in Buildings by the Ministry of Land, Infrastructure, Transport and Tourism / Ministry of Economy, Trade and Industry - Promotion of waterproofing: Concept of waterproofing for sewer facilities by the Ministry of Land, Infrastructure, Transport and Tourism, etc. 【Inquiry Ranking】 1st: Medical Facilities 2nd: Accommodation Facilities 3rd: Commercial Facilities 4th: Educational Facilities 5th: Offices (High-rise)

Detailed information

  • No.1.png

    (After pouring) Preparation for Eflex connection

  • No.2.jpg

    Pipe-in-sleeve connection before 1

  • No.3.png

    Pipe-in-sleeve connection before 2

  • No.4.png

    Pipe-in-sleeve connection work 1

  • No.5.png

    Pipe-in-sleeve connection work 2

  • No.6.png

    Pipe-in-sleeve connection completed 1

  • No.7.png

    Pipe-in-sleeve connection completed 2

  • No.8.jpg

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

Line up（17）

Model number overview
Soku-Tomeru Instant Seal　（ST-1K） 1kg box (2 x 500g bottles)
PIS30U Conduit Pipe / FEP-30 * Rigid Polyvinyl Chloride Pipe VP-50
PIS40U Conduit Pipe / FEP-40 * Rigid Polyvinyl Chloride Pipe VU-65
PIS50U Conduit Pipe / FEP-50 * Rigid Polyvinyl Chloride Pipe VU-75
PIS65U Conduit Pipe / FEP-65 * Rigid Polyvinyl Chloride Pipe VU-100
PIS80U Conduit Pipe / FEP-80 * Rigid Polyvinyl Chloride Pipe VU-125
PIS100U Conduit Pipe / FEP-100 * Rigid Polyvinyl Chloride Pipe VU-150
PIS125U Conduit Pipe / FEP-125 * Rigid Polyvinyl Chloride Pipe VU-200
PIS150U Conduit Pipe / FEP-150 * Rigid Polyvinyl Chloride Pipe VU-250
PIS30P Conduit Pipe / FEP-30 * Rigid Polyvinyl Chloride Pipe VP-50
PIS40P Conduit Pipe / FEP-40 * Rigid Polyvinyl Chloride Pipe VP-65
PIS50P Conduit Pipe / FEP-50 * Rigid Polyvinyl Chloride Pipe VP-80
PIS65P Conduit Pipe / FEP-65 * Rigid Polyvinyl Chloride Pipe VP-100
PIS80P Conduit pipe / FEP-80 * Rigid polyvinyl chloride pipe VP-125
PIS100P Conduit Pipe / FEP-100 * Rigid Polyvinyl Chloride Pipe VP-150
PIS125P Conduit Pipe / FEP-125 * Rigid Polyvinyl Chloride Pipe VP-200
PIS150P Conduit pipe / FEP-150 * Rigid PVC pipe VP-250

catalog（6）

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[Underground beam sleeve/flood prevention/waterproofing] Waterproof sleeve for underground exterior walls "Pipe in Sleeve" A4 size

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【Underground Beam Sleeve / Water Ingress Prevention and Waterproofing】 Waterproof Sleeve for Underground Walls "Pipe-in-Sleeve" FAQ

【Underground Beam Sleeve / Water Ingress Prevention and Waterproofing】 Waterproof Sleeve for Underground Walls "Pipe-in-Sleeve" FAQ

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【Adoption Results】Waterproof Sleeve for Underground Exterior Walls Pipe in Sleeve (TM)

【Adoption Results】Waterproof Sleeve for Underground Exterior Walls Pipe in Sleeve (TM)

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CAD data（48）

Model number overview File
【Drawing (VU-50)】Pipe in Sleeve: PIS30U (Flame Retardant PIS30NU) Pipe in Sleeve: Through Flex FP-30 (Flame Retardant Flex NFP-30) / JIS PVC Sleeve VU-50
  • 2D jww ( 0B)
【Drawing (VU-50)】Pipe in Sleeve: PIS30U (Flame Retardant PIS30NU) Pipe in Sleeve: Through Flex FP-30 (Flame Retardant Flex NFP-30) / JIS PVC Sleeve VU-50
  • 2D dxf ( 0B)
【Drawing (VU-50)】Pipe in Sleeve: PIS30U (Flame Retardant PIS30NU) Pipe in Sleeve: Through Flex FP-30 (Flame Retardant Flex NFP-30) / JIS PVC Sleeve VU-50
  • 2D pdf ( 78KB)
【Drawing (VU-65)】Pipe in Sleeve: PIS40U (Flame-retardant PIS40NU) Pipe in Sleeve: Through Flex FP-40 (Flame Retardant Flex NFP-40) / JIS PVC Sleeve VU-65
  • 2D pdf ( 160KB)
【Drawing (VU-65)】Pipe in Sleeve: PIS40U (Flame-retardant PIS40NU) Pipe in Sleeve: Through Flex FP-40 (Flame Retardant Flex NFP-40) / JIS PVC Sleeve VU-65
  • 2D jww ( 0B)
【Drawing (VU-65)】Pipe in Sleeve: PIS40U (Flame-retardant PIS40NU) Pipe in Sleeve: Through Flex FP-40 (Flame Retardant Flex NFP-40) / JIS PVC Sleeve VU-65
  • 2D dxf ( 0B)
【Drawing (VU-75)】Pipe in Sleeve: PIS50U (Flame Retardant PIS50NU) Pipe in Sleeve: Through Flex FP-50 (Flame Retardant Flex NFP-50) / JIS PVC Sleeve VU-75
  • 2D dxf ( 0B)
【Drawing (VU-75)】Pipe in Sleeve: PIS50U (Flame Retardant PIS50NU) Pipe in Sleeve: Through Flex FP-50 (Flame Retardant Flex NFP-50) / JIS PVC Sleeve VU-75
  • 2D jww ( 0B)
【Drawing (VU-75)】Pipe in Sleeve: PIS50U (Flame Retardant PIS50NU) Pipe in Sleeve: Through Flex FP-50 (Flame Retardant Flex NFP-50) / JIS PVC Sleeve VU-75
  • 2D pdf ( 72KB)
【Drawing (VU-100)】Pipe in Sleeve: PIS65U (Flame Retardant PIS65NU) Pipe in Sleeve: Through E-Flex FP-65 (Flame Retardant E-Flex NFP-65) / JIS PVC Sleeve VU-100
  • 2D pdf ( 71KB)
【Drawing (VU-100)】Pipe in Sleeve: PIS65U (Flame Retardant PIS65NU) Pipe in Sleeve: Through E-Flex FP-65 (Flame Retardant E-Flex NFP-65) / JIS PVC Sleeve VU-100
  • 2D jww ( 0B)
【Drawing (VU-100)】Pipe in Sleeve: PIS65U (Flame Retardant PIS65NU) Pipe in Sleeve: Through E-Flex FP-65 (Flame Retardant E-Flex NFP-65) / JIS PVC Sleeve VU-100
  • 2D dxf ( 0B)
【Drawing (VU-125)】Pipe in Sleeve: PIS80U (Flame Retardant PIS80NU) Pipe in Sleeve: Through Flex FP-80 (Flame Retardant Flex NFP-80) / JIS PVC Sleeve VU-125
  • 2D pdf ( 69KB)
【Drawing (VU-125)】Pipe in Sleeve: PIS80U (Flame Retardant PIS80NU) Pipe in Sleeve: Through Flex FP-80 (Flame Retardant Flex NFP-80) / JIS PVC Sleeve VU-125
  • 2D jww ( 0B)
【Drawing (VU-125)】Pipe in Sleeve: PIS80U (Flame Retardant PIS80NU) Pipe in Sleeve: Through Flex FP-80 (Flame Retardant Flex NFP-80) / JIS PVC Sleeve VU-125
  • 2D dxf ( 0B)
【Drawing (VU-150)】Pipe in Sleeve: PIS100U (Flame Retardant PIS100NU) Pipe in Sleeve: Through Flex FP-100 (Flame Retardant Flex NFP-100) / JIS PVC Sleeve VU-150
  • 2D pdf ( 69KB)
【Drawing (VU-150)】Pipe in Sleeve: PIS100U (Flame Retardant PIS100NU) Pipe in Sleeve: Through Flex FP-100 (Flame Retardant Flex NFP-100) / JIS PVC Sleeve VU-150
  • 2D dxf ( 0B)
【Drawing (VU-150)】Pipe in Sleeve: PIS100U (Flame Retardant PIS100NU) Pipe in Sleeve: Through Flex FP-100 (Flame Retardant Flex NFP-100) / JIS PVC Sleeve VU-150
  • 2D jww ( 0B)
【Drawing (VU-200)】Pipe in Sleeve: PIS125U (Flame-retardant PIS125NU) Pipe in Sleeve: Through Flex FP-125 (Flame Retardant Flex NFP-125) / JIS PVC Sleeve VU-200
  • 2D dxf ( 183KB)
【Drawing (VU-200)】Pipe in Sleeve: PIS125U (Flame-retardant PIS125NU) Pipe in Sleeve: Through Flex FP-125 (Flame Retardant Flex NFP-125) / JIS PVC Sleeve VU-200
  • 2D jww ( 89KB)
【Drawing (VU-200)】Pipe in Sleeve: PIS125U (Flame-retardant PIS125NU) Pipe in Sleeve: Through Flex FP-125 (Flame Retardant Flex NFP-125) / JIS PVC Sleeve VU-200
  • 2D pdf ( 68KB)
【Drawing (VU-250)】Pipe in Sleeve: PIS150U (Flame-retardant PIS150NU) Pipe in Sleeve: Through Flex FP-150 (Flame Retardant Flex NFP-150) / JIS PVC Sleeve VU-250
  • 2D dxf ( 180KB)
【Drawing (VU-250)】Pipe in Sleeve: PIS150U (Flame-retardant PIS150NU) Pipe in Sleeve: Through Flex FP-150 (Flame Retardant Flex NFP-150) / JIS PVC Sleeve VU-250
  • 2D jww ( 85KB)
【Drawing (VU-250)】Pipe in Sleeve: PIS150U (Flame-retardant PIS150NU) Pipe in Sleeve: Through Flex FP-150 (Flame Retardant Flex NFP-150) / JIS PVC Sleeve VU-250
  • 2D pdf ( 66KB)
【Drawing (VP-50)】Pipe in Sleeve: PIS30P (Flame Retardant PIS30NP) Pipe in Sleeve: Through Flex FP-30 (Flame Retardant Flex NFP-30) / JIS PVC Sleeve VP-50
  • 2D pdf ( 78KB)
【Drawing (VP-50)】Pipe in Sleeve: PIS30P (Flame Retardant PIS30NP) Pipe in Sleeve: Through Flex FP-30 (Flame Retardant Flex NFP-30) / JIS PVC Sleeve VP-50
  • 2D jww ( 0B)
【Drawing (VP-50)】Pipe in Sleeve: PIS30P (Flame Retardant PIS30NP) Pipe in Sleeve: Through Flex FP-30 (Flame Retardant Flex NFP-30) / JIS PVC Sleeve VP-50
  • 2D dxf ( 0B)
【Drawing (VP-65)】Pipe in Sleeve: PIS40P (Flame Retardant PIS40NP) Pipe in Sleeve: Through Flex FP-40 (Flame Retardant Flex NFP-40) / JIS PVC Sleeve VP-65
  • 2D pdf ( 160KB)
【Drawing (VP-65)】Pipe in Sleeve: PIS40P (Flame Retardant PIS40NP) Pipe in Sleeve: Through Flex FP-40 (Flame Retardant Flex NFP-40) / JIS PVC Sleeve VP-65
  • 2D jww ( 0B)
【Drawing (VP-65)】Pipe in Sleeve: PIS40P (Flame Retardant PIS40NP) Pipe in Sleeve: Through Flex FP-40 (Flame Retardant Flex NFP-40) / JIS PVC Sleeve VP-65
  • 2D dxf ( 0B)
【Drawing (VP-75)】Pipe in Sleeve: PIS50P (Flame Retardant PIS50NP) Pipe in Sleeve: Through E-Flex FP-50 (Flame Retardant E-Flex NFP-50) / JIS PVC Sleeve VP-75
  • 2D pdf ( 72KB)
【Drawing (VP-75)】Pipe in Sleeve: PIS50P (Flame Retardant PIS50NP) Pipe in Sleeve: Through E-Flex FP-50 (Flame Retardant E-Flex NFP-50) / JIS PVC Sleeve VP-75
  • 2D jww ( 0B)
【Drawing (VP-75)】Pipe in Sleeve: PIS50P (Flame Retardant PIS50NP) Pipe in Sleeve: Through E-Flex FP-50 (Flame Retardant E-Flex NFP-50) / JIS PVC Sleeve VP-75
  • 2D dxf ( 0B)
【Drawing (VP-100)】Pipe in Sleeve: PIS65P (Flame Retardant PIS65NP) Pipe in Sleeve: Through E-Flex FP-65 (Flame Retardant E-Flex NFP-65) / JIS PVC Sleeve VP-100
  • 2D pdf ( 71KB)
【Drawing (VP-100)】Pipe in Sleeve: PIS65P (Flame Retardant PIS65NP) Pipe in Sleeve: Through E-Flex FP-65 (Flame Retardant E-Flex NFP-65) / JIS PVC Sleeve VP-100
  • 2D jww ( 0B)
【Drawing (VP-100)】Pipe in Sleeve: PIS65P (Flame Retardant PIS65NP) Pipe in Sleeve: Through E-Flex FP-65 (Flame Retardant E-Flex NFP-65) / JIS PVC Sleeve VP-100
  • 2D dxf ( 0B)
【Drawing (VP-125)】Pipe in Sleeve: PIS80P (Flame Retardant PIS80NP) Pipe in Sleeve: Through Flex FP-80 (Flame Retardant Flex NFP-80) / JIS PVC Sleeve VP-125
  • 2D dxf ( 0B)
【Drawing (VP-125)】Pipe in Sleeve: PIS80P (Flame Retardant PIS80NP) Pipe in Sleeve: Through Flex FP-80 (Flame Retardant Flex NFP-80) / JIS PVC Sleeve VP-125
  • 2D pdf ( 69KB)
【Drawing (VP-125)】Pipe in Sleeve: PIS80P (Flame Retardant PIS80NP) Pipe in Sleeve: Through Flex FP-80 (Flame Retardant Flex NFP-80) / JIS PVC Sleeve VP-125
  • 2D jww ( 0B)
【Drawing (VP-150)】Pipe in Sleeve: PIS100P (Flame Retardant PIS100NP) Pipe in Sleeve: Through Flex FP-100 (Flame Retardant Flex NFP-100) / JIS PVC Sleeve VP-150
  • 2D dxf ( 0B)
【Drawing (VP-150)】Pipe in Sleeve: PIS100P (Flame Retardant PIS100NP) Pipe in Sleeve: Through Flex FP-100 (Flame Retardant Flex NFP-100) / JIS PVC Sleeve VP-150
  • 2D jww ( 0B)
【Drawing (VP-150)】Pipe in Sleeve: PIS100P (Flame Retardant PIS100NP) Pipe in Sleeve: Through Flex FP-100 (Flame Retardant Flex NFP-100) / JIS PVC Sleeve VP-150
  • 2D pdf ( 69KB)
【Drawing (VP-200)】Pipe in Sleeve: PIS125P (Flame Retardant PIS125NP) Pipe in Sleeve: Through Flex FP-125 (Flame Retardant Flex NFP-125) / JIS PVC Sleeve VP-200
  • 2D pdf ( 67KB)
【Drawing (VP-200)】Pipe in Sleeve: PIS125P (Flame Retardant PIS125NP) Pipe in Sleeve: Through Flex FP-125 (Flame Retardant Flex NFP-125) / JIS PVC Sleeve VP-200
  • 2D jww ( 88KB)
【Drawing (VP-200)】Pipe in Sleeve: PIS125P (Flame Retardant PIS125NP) Pipe in Sleeve: Through Flex FP-125 (Flame Retardant Flex NFP-125) / JIS PVC Sleeve VP-200
  • 2D dxf ( 177KB)
【Drawing (VP-250)】Pipe in Sleeve: PIS150P (Flame Retardant PIS150NP) Pipe in Sleeve: Through Flex FP-150 (Flame Retardant Flex NFP-150) / JIS PVC Sleeve VP-250
  • 2D pdf ( 70KB)
【Drawing (VP-250)】Pipe in Sleeve: PIS150P (Flame Retardant PIS150NP) Pipe in Sleeve: Through Flex FP-150 (Flame Retardant Flex NFP-150) / JIS PVC Sleeve VP-250
  • 2D jww ( 85KB)
【Drawing (VP-250)】Pipe in Sleeve: PIS150P (Flame Retardant PIS150NP) Pipe in Sleeve: Through Flex FP-150 (Flame Retardant Flex NFP-150) / JIS PVC Sleeve VP-250
  • 2D dxf ( 177KB)

News about this product（2）

We have published a FAQ for the waterproof sleeve "Pipe-in-Sleeve" for underground and outer wall use.

  • NEW
  • Catalog news

The "JECA Fair 2026 74th Electrical Industry Exhibition" will be held soon from May 27 (Wednesday) to May 29 (Friday) at Tokyo Big Sight. We are planning to showcase at the booth of Furukawa Electric Co., Ltd. "Waterproof Sleeve for Underground Outer Walls - Pipe in Sleeve" We have compiled the inquiries we received regarding the product launch and have created an FAQ, which we have started to publish. Since last year's JECA Fair, we have received numerous inquiries and requests from various fields, for which we are truly grateful. We kindly ask you to take a look. Thank you.

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Coming soon! Waterproof sleeve for underground and exterior walls (underground beam sleeve) Pipe-in-sleeve type T (with drainage flange)

  • Product news

A new innovative product for the underground beam sleeve construction is about to be released! Introducing the upgraded version of the "Pipe-in-Sleeve" that you have come to love! "Pipe-in-Sleeve T-type," abbreviated as PIS-T. The T-type features a "water drainage PVC flange" welded with the same material (PVC) to the outer layer of the conventional PIS PVC sleeve. This method serves as an alternative to the ring-shaped or band-shaped water-stopping material on the outer circumference of the PVC sleeve, responding to the strong requests from construction companies. Achieving both work efficiency and construction quality! Stay tuned for the official launch!

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Company information

EPJ

EPJ

Building materials, supplies and fixtures manufacturers

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A manufacturer specialized in planning, design, and engineering. We focus on product development to solve various issues at construction sites, providing innovative, cutting-edge, and ecological products. Please feel free to contact us.

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