Separable sleeve for rehabilitating man-entry pipeline systems

Application: The Quick-Lock  BIG LinerEnd was designed for permanently, tightly connecting liner systems to the host pipe or the branch’s pipe connector .

Nominal diameter range DN 700–2000 / 28”–120”.

Quick-Lock Big LinerEnd
Quick-Lock Big LinerEnd

System description

The Quick-Lock BIG LinerEnd consists of two-, three-, or four-part segments (shells), depending on the nominal diameter; one seal; and one set of screws.

How it works

  • The Quick-Lock BIG LinerEnd uses the principle of compression and is made from the materials 316L and EPDM.
  • The separable sleeve is introduced into the pipeline system through the man-entry opening.

What you need

  • The only thing needed to install is the clamping tool set.
  • The Quick-Lock liner end sleeve may only be installed in stress-free, hardened liner systems.

System advantages

  • simple installation procedure
  • durable materials V4A stainless steel and EPDM
  • articulated supports
  • no need for chemicals
  • low investment in system equipment
  • DIBt European Technical Approval
  • Materials are permanently resistant to municipal wastewater



The materials used here, 316L stainless steel and EPDM seal, have proven themselves for decades in pipeline construction. Grade 316L stainless steel lasts virtually forever in municipal wastewater.

The EPDM seal is a state-of-the-art pipe engineering product with very long service life and extremely high wear resistance.

Product range


The Quick-Lock BIG LinerEnd is available in three configurations:

  • Variant 1: Length 341mm, diameter DN 700–1300 / 28”–52”, internal pressure 1 bar / 14.50 psi, external pressure 0,3 bar / 43.51 psi (two-part)
  • Variant 2: Length 341mm, diameter DN 1400–2400 / 56”–94”, internal pressure 1 bar / 14.50 psi, external pressure 0,3 bar / 43.51 psi (three-part)


an EPDM seal

set of screws:

locking screws, T-nuts, and sheaths:

The length and quantity of the locking screws depend on the sheet metal thickness and the nominal pipe diameter. In order to use the system properly, it is imperative to meet the following specifications and to use the original screw sets.

The two different screw lengths are provided in red and blue bags to better tell them apart.

The sheath replaces and supplements the function of a washer.

Number of screws, T-nuts, and sheaths:

DN 800–1300 / 32”–52”, 2-part: 4 pieces each

DN 1400–2100 / 56”–84”, 3-part: 6 pieces each

DN 2200–3000 / 88”–120”, 4-part: 8 pieces each

Screw length:

DN 800–1200 / 32”–48”, length 16mm, bag: red

DN 1300–3000 / 52”–120”, length 18mm, bag: blue

Quality and certifications

The rehabilitation of wastewater lines and pipework using internal sleeves is regulated in Technical Bulletin 143-5.

DIBt European Technical Approval pending.

The leakproofness of the Quick-Lock BIG LinerEnd under external pressure has been proven in cooperation with the University of Applied Sciences in Münster. The practical testing and strength verification demonstrated that Quick-Lock BIG LinerEnd can be used for external pressures up to 0.5 bar / 7.25 psi with double the structural reliability.

All information (data sheets, instructions, and approvals) for the complete Quick-Lock system from UHRIG and all order forms can be found at: Downloads

If you want to know more about our products, we’d be happy to answer your questions anytime.

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