Gas supply system

GSS6001 <br/>Gas supply system

A Gas IN
C Drain

Gas supply system


  • Safe operation thanks to incorporated pressure regulator with upstream filter
  • System mounted on a plate
  • Easy wall or rack mounting


  • Coalescing filter with integrated sight-glass for monitoring liquid level to ensure safe operation even in case of poor gas quality.
  • Rigid base frame for easy rack mounting.
  • Wide range of flow monitoring to ensure utmost reliability of mechanical seals.

Standards and approvals

  • API 682 / ISO 21049
  • API 682 4th ed. Cat. 2/3 - 3NC-FB
  • API 682 4th ed. Cat. 2/3 - 3NC-BB
  • API 682 4th ed. Cat. 2/3 - 3NC-FF
  • API 682 4th ed. Cat. 1 - 3NC-BB

Functional description

Buffered, gas-lubricated mechanical seals may only be used in conjunction with adequately pressurized gas (e.g. from a closed circular nitrogen pipeline provided by the operator). For Plan 74 systems the barrier gas pressure level (p3) must always be higher than the pressure level (p1) of the sealed product, whatever the operational state of the machine. The minimum pressure overlay level (Δp) is specified for the individual seal types.

Main GSS functions:
- Filtering of the buffer and flushing gas
- Pressure monitoring and regulation
- Flow monitoring

Typical tasks for the GSS:
- Barrier/buffer gas supply for dual seals
- Gas supply for tandem seals


Design, calculation and production acc. to ASME VIII, Div. 1.

3rd party inspection and other certificates on request.

Recommended piping plans

Product variants

Designation GSS6001A4M001-D0
API piping plan Plan 74
Design code ASME
Allowable pressure1) 40 bar (580 PSI)
Allowable temperature1) -20 °C … +50 °C (-4 °F … +122 °F)
Process connections Flange 1/2", 600 lbs
Metal parts 316/316L

Other versions on request.

1) Design data, permissible working values depend on the actual conditions of service.

Similar products

GSS6000 Gas supply system

  • Safe operation due to incorporated pressure regulator with upstream filter
  • System mounted on a plate
  • Easy wall or rack mounting

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