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Single-line building entry ZAPPO

for buildings without a basement

ESH PolySafe VT75

Article no.: 1910010000

This product is DVGW-certified. The valid construction sample inspection certificate from DVGW CERT GmbH can be found in Downloads.
  • No groundwork at the property
  • Continuous gastight empty conduit system
For the reliable sealing of gas, drinking water, power or telecommunications services. A drilling rocket is used to excavate a continuous empty conduit route from the basement of the building to the edge of the property.


Application range:

  • DIN 18533 W1.1-E
  • Waterproof concrete stress class 1, Waterproof concrete stress class 2


  • Can be fully installed from the inside of building
  • Ideal for applications in which the building connection route has been built over or is difficult to access
  • Suitable for all services
  • Including support pipe for optional use to compensate for uneven contact surfaces

Scope of delivery:

  • 2 twist protection flaps
  • 2x self-tapping screws M8x35 for sealing service lines
  • Support pipe
  • Octagonal inner sealing element
  • Outer sealing element with injection hose
  • Sponge rubber
  • Centring ring


  • Core drill: ID: 99 - 103 mm
  • Driving pipe: OD 75 mm


  • For gas combined building entries manufactured by Schuck (DN25, 32, 40) and RMA (DN25)


  • Front panel and twist protection flaps: Fibre glass reinforced polyamide
  • Rubber: EPDM
  • Rear press ring and outer sealing element: stainless steel V2A (AISI 304L)
  • Centring ring: stainless steel V2A (AISI 304L)
  • Screws: stainless steel V2A (AISI 304L)
  • Support pipe: stainless steel V2A (AISI 304L)


  • Gastight and watertight to 1 bar


  • DVGW VP 601