Features DF-(P) DGS6 DiamondFace
- DiamondFace bonded primary seal faces
- Safe cupped retainer for rotating ring
- Bi-directional
- Ready-to-fit cartridge unit
- Single, double, tandem and tandem seal with intermediate labyrinth arrangement available
- An ideal solution for Ethane, CO2 and many other low vapor margin applications
- This type of seals can handle both liquid and gaseous phases during the operation of the pump
Advantages DF-(P) DGS6 DiamondFace
- Significantly lower leakage rate compared to competition
- Longer life span
- Wear and contact free operation
- Self-cleaning 3-D gas grooves
- High gas film stiffness
- Proven, reliable and economical solution
- Can be adjusted even to extreme narrow installation space – retrofits are easy to implement
Operating range DF-(P) DGS6 DiamondFace
- Shaft diameter:
D = 40 … 280 mm (1.57″ … 11.02″) - Pressure: p = 0 … 120 bar (1,450 PSI)
with PTFE option: 0 … 250 bar (3,625 PSI) - Temperature:
t = -20 °C … +150 °C (-4 °F … +302 °F)
with PTFE option: -100 °C … +200 °C (-148 °F … +392 °F) - Sliding velocity:
vg = 0.6 … 140 m/s (2 … 459 ft/s)
For applications outside the operating range mentioned, please inquire.
Materials DF-(P) DGS6 DiamondFace
- Primary seat and seal face: Silicon carbide with DiamondFace bonding
- Secondary seat and seal face: Silicon carbide with DLC coating. Optional also with DF-coating
- Secondary seals: FKM, PTFE (DF-PDGS6) or other elastomers, depending on product gas composition
- Metal parts: 1.4006 (410) and other stainless steels
| 1 | Primary seal face with DF-coating*, stationary |
| 2 | Primary seat with DF-coating*, rotating |
| 3 | Thrust ring |
| 4 | Spring |
| 5 | Shaft sleeve and seat retainer |
| 6 | Intermediate sleeve |
| 7 | Housing (adapted in size to the installation space) |
| 8 | “Adjustable” nut for axial misalignment |
| 9 | Split ring |
| 10 | Clamping ring |
| 11 | Cover |
| 12 | Process side labyrinth |
| GBI | Gas Buffer Inlet |
| GBO | Gas Buffer Outlet |
| D | Drain |
| * | Optional: secondary seal face and seat also with DF-coating. |
Recommended applications seal DF-(P) DGS6 DiamondFace
- Oil and gas industry
- Refining technology
- Petrochemical industry
- Hydrocarbon applications
- CO2 applications
