CobaDGS -
Zero Emission Solution

CobaDGS -
Zero Emission Solution

CobaDGS - </br>Zero Emission Solution
CobaDGS drawing
CobaDGS drawing
Item Description
1 (Seat) Rotating seal face
2 (Seal face) Stationary seal face
3 Thrust ring
4 Spring
5 Shaft sleeve
6 Housing
7 Labyrinth
8 DGS as secondary seal
9 CobaSeal as separation seal
10 Intermediate labyrinth


E* Buffer gas supply - optional
A  Seal gas supply
B  Primary vent
C  Secondary seal gas supply
S  Secondary vent
D  Separation gas supply

CobaDGS -
Zero Emission Solution

Features

The sealing solution for reduction of methane-/ process gas emissions
  • Gas-lubricated
  • Bi-directional
  • Ready-to-fit cartridge unit
  • Available for following seal arrangements: single and tandem
  • Co-axial primary seal
  • Separation seals as CobaSeal, carbon rings or labyrinths optional

Advantages


CobaDGS eliminates methane emissions.
The CobaDGS reliably prevents any process gas emissions that are technically caused by primary seal leakage during compressor operation. This makes CobaDGS the most climate-friendly sealing solution for high-pressure turbo-compressors. It is recommended as a sustainable sealing solution for modernization of existing compressors and as a first fit for OEM.

Operating range

Shaft diameter:
d = 24.5 … 360 mm (0.96“… 14.17“)
Pressure (static and dynamic):
p = from vacuum up to 160 bar (2,321 PSI)
Design temperature:
t = -46 °C … +230 °C
(-51 °F ... +446 °F)
Sliding velocitiy:
vg = up to 140 m/s (459 ft/s)

Project specific special designs possible.

Materials

Stationary seal face: Silicon carbide with DLC-coating, DiamondFace-coating optional
Rotating seal face (Seat): Silicon carbide with DLC-coating, DiamondFace-coating optional
Secondary seals: FKM or other elastomers, depending on product gas composition
Metal parts: 1.4006 or other stainless steels

Other materials on request.
Dimensions on request.

Standards and approvals

  • NACE
  • Compliant to TA Luft (German Clean Air Act) (tandem seal)



Product variants

Optionally available

Optionally available


High pressure nitrogen generator

On-site generation of nitrogen.
Ensures continuous, uninterrupted nitrogen supply
Solves the logistics problem, especially for sites in remote, hard-to-reach areas.
No more hassle transporting the nitrogen.

Nitrogen generation is based on pressure swing adsorption. Storage at 330 bar – for intermittent generation/compression and back-up supply – then reduction to the required pressure.

The complete nitrogen production and supply system comes in a container which should be installed out of ATEX area.
Required power supply: Heavy current, 400V, 50Hz/60Hz, 3 Ph

Similar products

DGS

  • Gas-lubricated
  • Uni-directional or bi-directional
  • Ready-to-fit cartridge unit
  • Single, double, tandem and tandem with intermediate labyrinth available
  • Separation seals as labyrinths, carbon rings or CobaSeal are optionally available

MDGS

  • Gas-lubricated
  • Bi-directional
  • Compact, radial design
  • Ready-to-fit cartridge unit, also available as a component seal
  • Single, double, tandem seal and tandem with intermediate labyrinth available

PDGS

  • Gas-lubricated
  • Uni-directional or bi-directional
  • Elastomer-free
  • Ready-to-fit cartridge unit
  • Single, double, tandem seal and tandem with intermediate labyrinth available
  • Separation seals as labyrinths, carbon rings or CobaSeal are optionally available
Contact

Inquire about individual solutions

We develop and produce customer-specific special and individual solutions for every application.

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