refinex® refitherm®
Cast steel gear pumps for industrial/petrochemical processes
Refinery and industrial plant applications are challenging. High process pressures and high temperatures are commonplace in such environments. Precisely in these environments MAAG gear pumps develop their full potential. Thanks to the extensive range of components and materials of constructions to choose from, MAAG gear pumps can be configured to suit customers specific requirements and therefore, are far superior to standard pumps in terms of performance and reliability.
Advantages
- Wide viscosity, temperature, and pressure range
- High efficiencies (due to tolerances and small clearances being modified in line with applications)
- Precise displacement volume
- Self-priming
- Reliability and longevity
- Suitable for API 676
Selection of typical pumped media
Emulsions
Sludges and condensates
Additives
Resins
Cellulose derivatives and pulps
Silicones
Adhesives and hot-melt adhesives
Paints and varnishes
Waxes and paraffins
Fertilizers
Mineral oils and fats
Fuels
Petrochemical products
Certificates
ATEX certificate
3.1 certificate
German Air Quality certificate (TA-Luft)
Performance test certificates
Options
Electrical heating
Heated seals
Bi-directional operation
Special modifications for demanding applications
Technical data
Rotational speed [U/Min]
max. 3000
Differential pressure [bar]
max. 300
Viscosity [MPas]
0.3 – 4,000,000
Temperature [°C]
-30 – 320
Pump size
RX 22/22 – 140/180
RT 36/36 – 140/140
RT 36/36 – 140/140
Output [l/Min]
0.5 – 1750
Housing
Cast steel
Gear shafts
Stainless steel
Nitrided steel (spur and helical)
Nitrided steel coated
Bearing
Manganese bronze
Sintered iron
Synthetic carbon
Steel with carbon inserts
Nitrided steel
Nitrided steel coated
Hardened tool steel
Bronze – CuAl
Shaft seal
Lip seals and packing
Single or double mechanical seal
External mechanical seal
Sealing medium or heating medium connections available
Magnetic coupling with single or double containment shell
Pump heating
Electrical heating by catridges optional for refinex®
Integrated channels for heating / cooling by means of steam or liquids for refitherm®