Gas fittings

General

Gas fittings

Viega gas fittings are tested in acc. with DVGW-​TRGI 2008 (DVGW worksheet G 600) and certified for use with gases in acc. with DVGW worksheet G 260. All components conform to the test criteria for higher thermal resistance (HTR) in acc. with DIN 3537‑1 and are checked for leaks.

The installation should be carried out using sealants certified in acc. with DIN 30660 with suitable tools in acc. with DVGW-​TRGI 2008.

Gas fittings with press connections
All sizes with SC‑Contur – connections, which remain unpressed become visible when the system is filled. The SC‑Contur is certified and fulfils the requirements of DVGW worksheet G 5614, point 4.4.1, connectors with forced leakage.
During leakage tests with water, Viega guarantees the identification of unpressed connections in the pressure range 0.1 MPa–0.65 MPa, in the case of a dry leakage test with compressed air or noble gases from 22 hPa–0.3 MPa.

Areas of application
Gases in acc. with DVGW worksheet G 260

Use of the system for application areas and media other than those described here must be agreed with Viega Service Center.

Operating conditions
Gas and liquid gas systems
  • Operating temperature -20 °C up to +70 °C
  • Operating pressure max. 0.5 MPa
  • Operating pressure at HTR-​requirement 650 °C/30 minutes max. 0.1 MPa (1 bar)

Higher thermal resistance (HTR)
According to DVGW-​TRGI 2008 gas fittings must fulfil the test criteria for higher thermal resistance in acc. with DIN 3537‑1. The HTR requirement on gas fittings offers a high degree of safety and is a recognised rule of engineering. Viega gas fittings are highly thermal resistant (HTR) and fulfil all of the requirements of DIN 3537‑1.

Thermal shut-​off system (TSS)
The TRGI requires the installation of a TSS or a corresponding construction protection for all components which are not highly thermal resistant. Viega offers a comprehensive product range of automatically thermally closing safety valves, which are integrated into ball valves, gas sockets and slotted valves to fulfil this requirement.

Active and passive safety measures
Viega offers a wide range of gas fitting products in acc. with DVGW-​TRGI 2008 (DVGW worksheet G 600) to protect against manipulation by unauthorised people. All Viega products, which actively or passively fulfil safety measures in acc. with DVGW-​TRGI 2008 (DVGW worksheet G 600), conform with the safety concept of the DVGW.

Use of press tools
The functional safety of the Viega press connector systems is primarily dependent on the perfect condition of the press tools and press machines used. For this reason, for the production of press connections, we recommend the use of Viega press tools and their regular inspection by authorised service points.

Technical data
Press connectors and components are constantly being optimised. If required, the current Z and installation dimensions can be obtained from the download area of the Viega homepage: viega.com
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Gas fittings