LP-D
LP-D
| Item | Designation |
| 1 | Seal face |
| 5 | Seat |
| 13 | Sleeve |
| 16 | Housing |
| 18 | Pin |
| 37 | Locking fixture |
| 2, 12, 15, 22, 23, 24, 25 | O-Ring |
| 43 | Plug |
LP-D-UP Dual seal
Ready-fitted for Ahlstar UP A MS21 range of pumps, bearing unit A1-A6
LP-D
Features
- Integrated seal for Sulzer A pumps
- Dual seal, balanced
- Semi cartridge unit
- Independent of direction of rotation
- Double pressure balanced
- Internal barrier fluid circulation
- Static springs on both sides
- No dynamic O-Ring on shaft
- Rugged design
- Shrink-fitted seal faces
- Seal faces have a large clearance to the shaft
- Wear part cost minimized
- Optimized design for Non-Flow use
Advantages
- Individually integrated to equipment for the best sealing result
- Straightforward and easy installation
- Static springs on both face sides reduces influence of misalignment
- No damage of the shaft by dynamically loaded O-Rings
- Extended service life due to rugged design
- No brittle parts in contact with torque transmission pins
- Seal faces protected by strong steel parts and a large radial clearance
Materials
Seal face: Silicon carbide (Q12), Carbon (A)
Secondary seals: FKM (V), EPDM (E), FFKM (K)
Metal parts: CrNiMo steel (G),
Grade 5A (4T), SMO 654 (4U)
Secondary seals: FKM (V), EPDM (E), FFKM (K)
Metal parts: CrNiMo steel (G),
Grade 5A (4T), SMO 654 (4U)
Recommended applications
- Pulp and paper industry
- Chemical industry
- CCUS
- Lithium
- Alternative fuels production
- Clean, abrasive or corrosive liquids
- Stocks of various kind
- Applications where crystallization is a problem
- Sulzer Ahlstar A (MS11) centrifugal pumps
Notes
- Double, quench and single seals have the same wear parts on the prouduct side, reduces stock holding costs
- The dual seal can also be used as single seal by removing the atmospheric seal parts
- Can be used with pressurized buffer fluid or with quench
Product variants
LP-D-S32-D20
Dual seal, adapted for Sulzer APP/APT pumps.
Dual seal, adapted for Sulzer APP/APT pumps.
LP-D-SL
Dual, adapted for Sulzer SL Mixers.
Further designs
available to fit in numerous other equipment from notable manufacturers for the Pulp- and Paper Industry e.g., Metso conical refiners, Andritz pressure screens and stock pumps.
Similar products
DF-(P)DGS6
- Dry gas seal for multiphase pump applications
- DiamondFace sliding surface technology
- Ideal for applications with Ethane, CO2, and similar media with low vapor margins
- Shrouded rotating ring
- Bi-directional
- Ready-to-fit cartridge unit
- Single, double, tandem, and tandem with intermediate labyrinth available
DF-SA DiamondFace
- Cartridge design
- Single seal
- Balanced
- Integrated pumping device
- Stationary spring loaded unit
- Inserted seal ring
- Rotating mating ring
(DiamondFace coated)
HR
- Single seal
- Balanced
- Independent of direction of rotation
- Multiple springs stationary
- Seat rotating
- Seat arranged directly behind the impeller
- Spring protection sleeve
- Variant with cylindrical spring and acc. EN 12756 (HRZ1) available
- Variant as cartridge with/without guide sleeve for application with/without quench (HR2, HR3)
- Dual seal as cartridge unit (HRKS-D) available