CENTRIFUGAL PUMP ANSI SERIES

Applications

Acid Transfer, Beverage Processing, Brine, Chemical Processing, Chloral-alkali, Corrosive Services, Organic Chemicals, Polymers, Sea Water, Solvents, Paper, Food, Synthetic Fibers, Slurry & others.

  • Delivery Size up to 200 mm (8`` Inch)
  • Capacity up to 410 M3/Hr.
  • Head up to 150 Meter
  • Working Pressure 17 kg/Cm2

CONSTRUCTIONAL FEATURES

Pumps are as per ANSI B73.1-2001. The design is of the back pull out type. Large varieties of models are available to operate at 1450 RPM and 2900 RPM at 50 HZ & 1750 RPM and 3500 RPM at 60 HZ. ANSI series chemical process pump is a horizontal single-stage centrifugal pump.

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SHAFT

The shaft is of the dry type, with a protective sleeve to prevent contact with the pumped liquid (for gland packed & standard mechanical seal only).

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SHAFT SEALING

The stuffing box is sealed by gland packing or by mechanical seal. Conversion from gland packing to mechanical seal is achieved by changing some standardized parts.

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BEARINGS

The bearing arrangement consists of Double Raw Angular Contact Ball Bearing and Single Row Deep Groove Ball Bearing. Oil level indicator is provided for oil level checking and maintaining.

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IMPELLER

Impellers are of open type. Hydraulic balancing of impellers is achieved either by back vanes or by balancing holes. The impellers are dynamically balanced.

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CASING

The casing has end suction and top center line delivery. The pump feet are integrally cast in the volute casing. Smooth hydraulic passages ensure high efficiency.

DIRECTION OF ROTATION

Clockwise viewed from driving end

DRIVE

The pump is only recommended for direct via a flexible spacer coupling. Spacer couplings enable utilization of the back pull out feature.

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BASE PLATE

Base plates for electric drives are available in a variety of styles. Standard: Fixed & grouted directly to the foundation Anti Vibration: Rigid base plate on rubber mounts

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FLANGES

Standard: ANSI B16.5 -150 Class
Optional: Available on request

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Open Impeller (Front Vane)

  • JEC also offers the pump with open type impellers.
  • It has complete interchangeability with reverse vane impellers.
  • These types of impellers are mostly used in applications where liquid contains solid particles or fibrous.
  • Base plates for electric drives are available in two variants of styles. Standard: fixed and grouted directly to the foundation Anti-vibration: rigid base plate on rubber mounts.

Reverse Vane Impeller Design

Required NPSH is low compared to standard centrifugal process pumps.
Back Pull-out design allows the removal of rotating parts without removing casing, piping, or motor.
Due to reverse vane impeller low pressure on the seal chamber results in the long life of the seal.
Rear cover plate wear surface rather than the casing which is expensive. Flow exits from the rear of the impeller hence abrasive wear on the rear cover.