Category: Centrifugal Pumps

Centrifugal Pump Installation Consideration

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Figure 11-14 shows a typical mechanical flowsheet for two centrifugal pumps installed in parallel. It is presented to illustrate some of the considerations necessary for a good pump installation. Every installation has different objectives and very few will be exactly like this one. The suction piping is sized for about 2-3 ft/sec and the discharge …

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Seals

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Seals are necessary to prevent leakage at the point where the shaft enters the pump case. The most inexpensive seal is made of packing material that acts as a pressure breakdown device. Packing must be flexible and capable of being compressed for proper operation. Packing material may be made of flexible metallic strands with graphite …

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Bearings

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Ball bearings transmit a load from a rotating surface to a fixed surface via a series of rotating balls. They are generally inexpensive, do not require any separate lubrication system, and can be designed to be selfaligning. However, they have limited ability to handle thrust, high loads, or high speeds. Roller bearings transmit load from …

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Centrifugal Sump Pump

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Description Mounting = Vertical Casing split = Radial Impeller type = Radial Mounting feet = Mounting plate No. of stages = Single Applications Flow conditions: Low head and moderate flow rate Service rating: Non-critical Typical uses: Primarily used to pump water or hydrocarbons from shallow pits or compartments

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Centrifugal API Barrel Pump

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Description Mounting = Horizontal Casing split = Radial Impeller type = Radial Mounting feet = Centerline of pump casing No. of stages = Multiple Applications Flow conditions: High head and flow rate, all specific gravities Service rating: Critical Typical uses: 1. Pipeline booster 2. Water flood 3. Lean oil pumps

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