Stream Industrial Multi-stage Pumps - GM/GMVB

Application

Multi-stage centrifugal pumps of the GM/GMVB series are designed for pumping clear resp.slightly turbid liquids without abrasives. A broad range of materials area variety of shaft sealing systems render this kind of pump suitable for use on a wide range of applicants:

  • Water supply installations
  • Circulating and condensating plants
  • Booster systems
  • Power supply plant
  • Sprinkling installations
  • Mines
  • Boiler feed

Operating Data

  • Flow Rate.................................................max. 700 m³/h
  • Total Head.................................................50~ 300m
  • Speed.................................................max.3600 rpm
  • Pumping Temperature.................................. ≤ 140°C
  • Casing Pressure.................................................30 bar*
  • Size.................................................32….200mm

Drive

The pumping unit is normally driven  by a nair-cooled three-phase AC squirrel-cage motor of IEC standard, Class F Insulation, protection degree IP54.

Direction of rotation is clockwise when seen from drive side.

For standard C.I.pumps, cast steel casing are used for higher pressure

Construction

Multi-stage centrifugal pumps GM/GMVB are of sectional casing type with closed impellers which are statically and dynamically balanced. The several interstage casings are sealed by "O"-ring joints and axially tightened by external tie bolts. Suction flanges are according to DIN2533, PN16 and discharge port flanges are according to DIN2535 PN 40. Suction flange on the right and close to the coupling and the discharge flange is at the other end and at top. Both suction and discharge flange can be turned with 90° angles on size 32-40-50 and 65.

Axial balance is secured by back wearing ring *balancing hole system in standard production.Balancing disc or balancing drum is used for total head 200 meters or above.

GM/GMVB with multi discharge port design are widely used in fire service sprinkler system can also be provided against request.

Each produced GM/GMVB type pump is tested for static pressure 1.5 times more than closed valve pressure (0 flow) and is also tested for performance.

Bearings

Ball bearings(grease lubricated) for both GM/GMVB.

Oil lubrication is an available option.

Shaft Sealing

Uncooled single stuffing box packing (S1)

Uncooled double stuffing box packing (S2)

Mechanical seal in accordance with DIN24960 (GN)


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