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Labs-free press connector systems 

Labs-free press systems ensure everything runs smoothly

The German-based abbreviation “Labs” refers to substances which impair wetting in paint shop processes. For example, silicones can impair the even application of paint and cause pitting. For that reason, pipelines in paint shops must be kept especially clean. Viega’s production of Labs-free press connectors is subject to high demands and continual internal inspection. 

A special case: the automotive industry 

Demand for Labs-free products arose with the introduction of water-soluble paints in the automotive industry. For example, silicones can prevent the paint being distributed evenly on the component, resulting in visible "pitting". 

Even small amounts of such paint-wetting impairment substances can have a negative effect on paint shop processes in the automotive industry. Viega’s Labs-free products provide a solution which actively prevents damage.

Strict internal and external tests to ensure maximum quality 

For quality assurance, "pitting test reports" from all renowned German automotive manufacturers that are continually testing Viega products are kept on hand. They are also subject to the external controls and protocols of the automobile manufacturers, and meet all requirements. 

Personal advice in the Service Center

Our Service Center is on hand to help you find the right solution.

The special features of Labs-free products

  • Cleaning the gunmetal/silicon bronze and stainless steel press connectors after the production process (casting / deforming / machining)
  • Assembly of special sealing elements using Labs-free lubricant
  • Marked with blue dot on the press connector
  • Individual packaging with LF marking

Intended use

The ball valves of Labs-free press connector systems can be used without restriction in potable water installations:

In accordance with the German Drinking Water Ordinance

  • Operating temperature ≤ 90° C
  • Operating pressure ≤ 1.0 MPa (10.0 bar)

In compressed-air systems with operating pressure ≤ 1.6 MPa (16.0 bar)

In heating systems in line with DIN EN 12828

  • Operating temperature ≤ 105° C
  • Output ≤ 1 MW.

Usage for applications other than those described above must be agreed with the Viega Service Center. 

Learn more about our products

Easytop fittings – also Labs-free 

When selecting ball valves and slanted seat valves, it is all about the choice of material and ease of actuation. Some slanted seat valves and ball valves are also available as Labs-free components.

Our Viega Easytop fittings:

  • move very smoothly
  • are user-friendly
  • and are also DVGW-approved
  • identifiable by the blue dot marking
Go to Easytop system fittings

List of media

Viega press connection technology with the Sanpress, Sanpress Inox, Profipress, Prestabo and Megapress systems has proven its value in potable water and building services installations over many years of application. It is increasingly being used in industrial systems which have special operating conditions regarding the pressure, temperature and concentration of the transported media. Careful consideration is required when choosing the pipe and sealing material. The "Fields of application for metal installation systems" information brochure, which is available to download on the right, will make this choice easier.

Always there for you – Viega Service 

The Viega Service Center will be glad to assist any customers with tailored recommendations in order to ensure that the optimum systems, components and seal materials are used in an installation.

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