ABS PUMP CONTRABLOCK IMPELLER

SULZER PUMP

Single-channel impellers have only one large passage for the pumped liquid. In Sulzer’s Contrablock impeller system, objects of at least 75 mm can pass freely through the impeller.

FLOWSERVE PUMP OPEN STYLE IMPELLER

DURCO MARK 3

A front vane open style impeller has two sets of pumping vanes and two critical tolerance locations:

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• The front vane clearance to the casing establishes:

  • Performance

  • Efficiency

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• The pump out vanes clearance to the rear cover establishes:

  • Seal chamber pressures and seal life

  • Thrust loads and bearing life

Wear causes axial thrust loads and seal chamber pressure to increase as the seal chamber gap widens. But the impeller cannot be adjusted to both tolerance locations at the same time. Seal chamber pressure and bearing loads increase after each adjustment. Performance is diminished and seal and bearing life suffers as a result.

FLOWSERVE PUMP REVERSE VANE IMPELLER

DURCO MARK 3

A reverse vane impeller has only one set of pumping vanes and one critical tolerance. This single tolerance — between the impeller and the rear cover — establishes:

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• Performance

• Efficiency

• Seal chamber pressure

• Thrust loads

Wear between the reverse vane impeller and the rear cover causes axial thrust loads to decrease as the seal chamber gap widens. At the same time, seal chamber pressure increases. By adjusting the setting of the reverse vane impeller against its single tolerance location, the original seal chamber pressure and axial thrust loads are re-established. The result is consistent, like-new performance.

GOULDS PUMP OPEN IMPELLER

STX MTX LTX

Full back shroud and thick impeller vanes for handling slurries and stringy fibers. Large balance holes and back pump-out vanes minimize stuffing box pressure and axial thrust. 

• Design suitable for most services.

• Allows for resistance to wear and corrosion.

• Provides for easily renewable clearances.

• Designed for optimum efficiency.

LIQUID RING VACUUM PUMP IMPELLER

STERLING SIHI LOH LOHE LPH LPHE LPHX SPECK VU VH VZ

Stainless Steel Impeller Pos. 23.50 [0030 / 230] & 23.51 [0031 / 230.1] For Vacuum Pump

• 25003 25007 25309

• 45008 45311 45316

• 55312 55316 55320

• 65320 65327

• 75320 75330 75340

• 85340 85353

• VU-20 VU-40 VU-80 VU-140 VU-220

• VU-300 VU-351 VU-450 VU-451

• VU-500 VU-600 VU-800 VU-1200 VU-1600

• VH-20 VH-40 VH-60 VH-110 VH-140 VH-180

• VH-300 VH-350 VH-400

• VH-500 VH-600 VH-800 VH-1200 VH-1600

• VZ-110-G VZ-140-G VZ-180-G