SoCare-MSI® Supplies Lowara Horizontal Stainless Steel Centrifugal Pump

Model：SNF660ER40U3-W1-FA5,0

Decription：10HM04P22T5RQQVXF

(PLM90HMHC/322 E3)

Operating data

Pumpe ty pe：Single head pump

Av ailable system NPSH：m 0

Nominal flow：I/min 100

Nominal head：m 50

Inlet pressure：bar 0

Environmental temperature：℃ 20

Fluid：water

Operating temperature t A：℃ 4

pH-value at t A：7

Density at t A：mm/s 1.569

Vapor pressure at t A:bar 1

Solids：0

Altitude：m 0

Pump data

Make ：lowara

Speed：1/min 2900

No.of stages:4

Max.casing pressure:bar

Max.working pressure:bar 6

Head H(Q=0):m 61

Weight:kg 23

Max. :mm 73

Impeller R designed :mm 73

Min.:mm 73

Nominal:l/min 103.3(103.3)

Flow  Max-:l/min 233

Min-:l/min 

Nominal:m 53.3

Head  at Qmaxl:30.3

at Qmin:61.2

Shaft power:kW 1.6(1.6)

Max. shaft power:kW 2

Efficiency :% 55.7

NPSH 3%:m 1.2

Pump Materials

Head: Stainless steel / AISI 304

Impeller: Technopoly mer Nory l

Diffuser: Stainless steel / AISI 304

Outer Sleeve:Stainless steel / AISI 304

Shaft:Stainless steel / AISI 304

ADAPTER: Aluminium

Ring with foot: Aluminium

SEAL HOUSING:Stainless steel / AISI 304

Wear Ring:Technopoly mer

Fill / drain plugs:Stainless steel / AISI 316

Tie rods: Stainless steel / AISI 431

Shaft Seal

e-HM Mechanical seal: Burgmann

e-HM-Burgmann

1.1.Rotating ring Silicon Carbide

2.Stationary part      Silicon Carbide

3.Elastomers          FPM

4.Springs          AISI 316

5.Other components   AISI 316

Motor data

Manufacturer ：Lowara

Specific design： IE3 3ph Flange Motor 

Type ：PLM90H322 E3

Rated power：2.2kW

Electric current ：4.56 A

Electric voltage：400V

Degree of protection :IP55

Speed:2890 1/min

Frame size：90

Insulation class F

Colour RAL 5010

Hydraulic data

Operating Data Specification

Flow：100 l/min50

Head：50 m

Static head：0 m

Hydraulic data (duty point)

Flow：100 l/min50

Head：50 m

Static head：0 m

Hydraulic data （duty point）

Flow：103 l/min

Head ：53.3m

Impeller design

Impeller R ：73 mm

Frequency： 50 Hz

Speed ：2900 1/min

Centrifugal Pump: The World's Most Common Pump for Fluid Transfer

1. Basic Definition
   

A centrifugal pump is a rotodynamic pump that uses rotational energy from one or more driven rotors, called impellers, to move fluid by means of centrifugal force. It is the most common type of pump used to move liquids through a piping system, primarily for transferring low-viscosity fluids like water, chemicals, and light oils at high flow rates.

  2. Key Components & Working Principle

The main components of a standard centrifugal pump are:

· Impeller: A rotating wheel with vanes (or blades) that is the core component. It imparts kinetic energy (velocity) to the fluid.

· Casing: A stationary, air-tight chamber that surrounds the impeller. Its primary function is to contain the liquid and direct it to the   discharge point. The volute casing (a spiral-shaped design) is common, as it converts the fluid's kinetic energy into pressure   ener

· Shaft: A mechanical component that transmits torque from the motor to the impeller.

· Suction Eye: The inlet at the center of the impeller where fluid enters.

· Bearings: Support the shaft and allow for smooth rotation.

· Seals (or Glands): Prevent fluid from leaking out along the drive shaft. Common types include mechanical seals and gland packings.

Working Principle (The "How"):

The operation is based on the conversion of energy and can be broken down into a few key steps:

1. Priming: The pump casing must first be filled with the fluid to be pumped. A centrifugal pump cannot operate on air.

2. Impeller Action: As the impeller rotates, it forces the fluid in the casing to spin outward, from the suction eye to the periphery of the impeller. This action creates a region of low pressure at the eye.

3. Centrifugal Force: The fluid is accelerated radially outward by the impeller vanes, gaining significant velocity (kinetic energy).

4. Energy Conversion: The high-velocity fluid is then discharged into the volute casing. The volute's progressively expanding cross-sectional area is designed to slow the fluid down. According to Bernoulli's principle, this decrease in velocity results in an increase in pressure.

5. Continuous Flow: The low pressure at the suction eye draws more fluid into the pump from the suction line, creating a continuous, smooth flow.

3. Key Characteristics & Performance

· Performance Curve: A centrifugal pump's performance is defined by its H-Q Curve (Head vs. Flow Curve).

· Head (H): The pressure energy imparted to the fluid, expressed in meters (or feet) of fluid column. It is independent of the fluid's   density.

· Flow (Q): The volumetric rate of discharge, expressed in m³/h or GPM.

· The curve shows that as the flow rate increases, the total dynamic head the pump can generate decreases.

· Brake Horsepower (BHP): The power required by the pump shaft. BHP increases with flow.

· Efficiency: The ratio of the hydraulic power delivered to the fluid to the mechanical power input at the shaft. Pumps operate most efficiently at a specific point on their curve, known as the Best Efficiency Point (BEP).

4. Main Advantages

· Simple Design & Low Cost: Few moving parts result in robust construction and relatively low manufacturing and maintenance costs.

· Smooth, Non-Pulsating Flow: Provides a consistent flow rate, which is gentle on piping systems.

· Small Footprint: Compact compared to positive displacement pumps of similar capacity.

· Ability to Handle Low-Viscosity Fluids: Ideal for water-like fluids. (Performance drops significantly as viscosity increases).

· Low Maintenance: No internal valves and simple mechanics lead to reliable operation.

· Wide Range of Capacities: Available in sizes from very small to extremely large, capable of handling massive flow rates.

5. Limitations

· Not Self-Priming: The pump casing must be filled with liquid before start-up.

· Poor Performance with Viscous Fluids: Efficiency and developed head drop dramatically as fluid viscosity increases. They are   generally not suitable for fluids thicker than ~800 cSt.

· Sensitive to System Changes: Performance is highly dependent on the system's back pressure.

· Flow is Affected by Pressure: The flow rate is not constant; it varies with the total dynamic head of the system.

· Cavitation Risk: If the pressure at the suction eye drops below the vapor pressure of the fluid, the liquid will flash into vapor bubbles, which then collapse violently upon reaching a high-pressure zone. This phenomenon, called cavitation, causes noise, vibration, and damage to the impeller and casing.

6. Common Applications

Centrifugal pumps are ubiquitous across almost every industry:

· Water Supply & Irrigation: Municipal water systems, wells, and agricultural irrigation.

· Chemical & Process Industries: Transferring chemicals, solvents, and process fluids.

· HVAC Systems: Circulating chilled water and hot water in building heating and cooling systems.

· Oil & Gas: Pipeline transportation, refinery processes, and water injection.

· Power Plants: Circulating condenser cooling water and feeding boiler feedwater.

· Pharmaceutical & Food Beverage: Handling clean, low-viscosity ingredients and products (with sanitary pump designs).

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