SF6 valves & couplings

DILO SF6 valves and couplings

Are you looking for pressure and vacuum tight valves and couplings for SF6 gas use? DILO is the right choice! We offer the largest range of products worldwide. Whether for medium voltage switchgear, high voltage switchgear or gas-insulated lines (GIL) our products always meet your requirements.

When using the DILO coupling system a leak rate of better than 1 x 10-8 mbar l/sec. is achieved corresponding to less than 1 cm³ in 3 years.

The DILO seal principle prevents the loss of SF6 gas and moisture from penetrating the SF6 gas system. DILO couplings will eliminate the loss of SF6 gas by incorrect gas handling. Thanks to their reliability, quality and durability DILO couplings are the world’s most widely used connecting system for SF6 switchgear.

Advantages of application

  • Self-closing coupling system
  • Pressure and vacuum-tight even when coupling and uncoupling
  • Permanent tightness even when frequently connected and disconnected
  • Applicable up to PN 64 bar
  • Suitable for temperatures from -40 °C to +80 °C
  • Direct connection to DILO service carts without adapter
  • Available in different materials even for outdoor switchgear

Approvals and tests

  • Certification according to ISO 9001:2008
  • HP0 approval as pressure equipment manufacturer
  • Production control in accordance with EC 97/23 regulations

Unlimited diversity

DILO’s range of couplings, adapters and transition pieces is diverse and does not leave much to be desired.

The delivery programme comprises:

  • Couplings available in DN6 to DN40 nominal diameters with different flange shapes, screw-in versions or as plug-in couplings
  • Soldering unions, screw-in stubs and gauge connections for gas tight piping
  • Ball valves in different versions and pressure ranges
  • Pressure and vacuum-tight rubber and wire braided hoses in different nominal diameters, lengths and finishes
  • Transition pieces and adapters for different nominal diameters
  • Connections for SF6 gas cylinders
  • Distribution panels and piping as well as customer specific special solutions

Here you can download the overall catalogue “DILO SF6 valves and couplings”.