HR

Description

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

Operating range

Shaft diameter:
dN = 36 … 270 mm (1.4″ … 10.63″)
Pressure: p1* = 16 bar (230 PSI)
Temperature:
t = -20 °C … +160 °C (-4 °F … +320 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)

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
*Contaminated, abrasive and solids
containing media
– Sewage water pumps
– Dredger pumps
– Oil sand extraction
– Suspension pumps of flue-gas
desulphurization plants (FGD)*