Tunnel Weep Hole - List of Manufacturers, Suppliers, Companies and Products

Tunnel Weep Hole Product List

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KM-type tunnel weep hole "KMVT type"

On-site connection of the guide pipe section and the filter section! A type with a backflow prevention valve is also available.

The "KMVT type" is a weep hole (backflow prevention valve) used in tunnels. On-site, the guide pipe section and filter section are connected by inserting them together. Basically, there is no backflow prevention valve included, but a type with a backflow prevention valve is also available. (Please use the type with a backflow prevention valve when installing below the water surface.) The length of the guide pipe section is manufactured according to the specified length based on the thickness of the lining concrete. The length of the filter section is 478 mm, but custom lengths can also be produced. Please feel free to contact us when placing an order. 【Materials】 ■ Cap: PVC JIS25 ■ Casing: PVC pipe VP25 ■ Screen: Non-woven fabric ■ Socket: JIS25 ■ Guide pipe: PVC pipe VP25 ■ Rubber O-ring: 32×51.4φ * For more details, please refer to the PDF document or feel free to contact us.

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  • Tunnel Materials
  • Tunnel construction
  • Drainage and water removal

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Tunnel Weep Hole "GT Type"

Check valve for tunnel waterways! Prevents underground infiltration of groundwater and spring water.

The tunnel weep hole "GT type" (without valve) is integrated with a drainage pipe filter with an inner diameter of 26mm and an outer diameter of 32mm, using PVC pipe VP-25 (L = lining length). This product is inserted through a pre-drilled wall hole of approximately 50mm, sealed for water tightness with an O-ring, and the surface is finished with sealing material. 【Features】 ○ Option to choose with or without valve ○ Adjustable length For more details, please contact us or download the catalog.

  • Sanitary fixtures

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