HR
HR
| Item | Part no. DIN 24250 |
Description |
| 1.1 | 472 | Seal face |
| 1.2 | 520 | Sleeve |
| 2 | 412.1 | O-Ring |
| 3 | 474 | Thrust ring |
| 4 | 477 | Spring |
| 5 | 475 | Seat (G11) |
| 6 | 412.2 | O-Ring |
| 7 | 412.3 | O-Ring |
| 8 | 441 | Housing |
Direction of installation: - from the impeller side HR10 - from the bearing side HR11
HR
Features
- 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
Advantages
- Especially for application in solids containing media without external flush or internal product circulation. Solids content 40 % (single seal) and 60 % (double seal)
- Operation under vacuum without seat locking possible
- Pumping screw for increased circulation available
- Springs are protected from product and leakage
Materials
Seal face: Silicon carbide (Q1, Q2)
Seat: Silicon carbide (Q1, Q2)
Seat: Silicon carbide (Q1, Q2)
Standards and approvals
- EN 12756
Recommended applications
- Process industry
- Oil and gas industry
- Refining technology
- Chemical industry
- Power plant technology
- Pulp and paper industry
- Water and waste water technology
- Mining industry
- Sugar industry
- Cement industry
- Lithium
- Contaminated, abrasive and solids containing media
- Sewage water pumps
- Dredger pumps
- Oil sand extraction
- Suspension pumps of flue-gas desulphurization plants (FGD)
Notes
Direction of installation:
- From the impeller side: HR10
- From the bearing side: HR11
Product variants
HR2
Cartridge-type single seal with guide sleeve (Item no. 2) for use with quench. Insert (Item no. 1) either metal or silicon carbide.
Cartridge-type single seal with guide sleeve (Item no. 2) for use with quench. Insert (Item no. 1) either metal or silicon carbide.
HR3
Cartridge-type single seal. Insert (Item no. 1) either metal or silicon carbide. Optional without maintenance rinsing.
Cartridge-type single seal. Insert (Item no. 1) either metal or silicon carbide. Optional without maintenance rinsing.
HRKS-D
Double seal in cartridge design for operation in barrier or buffer pressure (does not open if barrier pressure fails), available alternatively with a pumping screw for a higher rate of circulation. Torque transmission e.g. by shrink disk.
Double seal in cartridge design for operation in barrier or buffer pressure (does not open if barrier pressure fails), available alternatively with a pumping screw for a higher rate of circulation. Torque transmission e.g. by shrink disk.
HRZ1
Single seal with cylindrical spring and type G76 seat. For installation in covers with installation dimensions according to EN 12756 B or U. Installation length l11 corresponds to max. l1k. Intermediate sizes on request.
Single seal with cylindrical spring and type G76 seat. For installation in covers with installation dimensions according to EN 12756 B or U. Installation length l11 corresponds to max. l1k. Intermediate sizes on request.
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