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Industrial Pumps > Inline Pumps > Inline Multistage Pumps

Inline Pumps

In-line pumps are centrifugal pumps, whose pump discharge and pump suction nozzles lie in a straight line of piping. It is often used in building services applications requiring a high pressure.

Multistage inline pumps are designed to boost the inline flow pressure of the water traveling from one point to another. In a multistage inline pump, the water passes through each stage with an increase in the pressure. The pumps are suitable for transferring the liquid between various operations in any process industry, Water distribution systems, Cleaning systems, Pumping Sea water, Pumping of acids and alkalis, Ultra filtration and Reverse Osmosis systems and Fire fighting applications.

In a Multistage pump, the desired Flow and Pressure can be obtained with a relatively smaller motor size when compared with the classical centrifugal pump. Multistage inline pumps are generally used for services requiring higher head that cannot be generated by single stage pumps. Different variants are available based on the customer needs.

(1) Horizontal Multistage Inline Pump - PH Range
(2) Vertical Multistage Inline Pump - PR Range

PH Range

Horizontal Centrifugal Multistage pump can be used for water circulation and mini RO Systems. The maximum operating pressure of these pumps is up to 10 Kg/cm2 and the flow range is from lm3 to 16m3. All wetted and rotating parts are manufactured in Stainless Steel, Cast Iron. A wide range of Seals are available for different applications. These pumps are foot mounted and are meant for

  • Pressure Boosting Systems
  • Pressure Jet Cleaning
  • Water Distribution
  • Refrigerant Recycling
  • Very Light and Non Aggressive Chemicals Transfer
  • Process water systems
  • Washing and cleaning systems
  • High-pressure wash down systems
  • Boiler feed and condensate systems
PR Range

Vertical Inline Centrifugal Multistage pump can be used for a wide range of applications. These pumps are also available in various material combinations. The maximum operating pressure of these pumps is up to 25 Kg/cm2 and the flow range is from 1 m3  to 90 m3.  A wide range of Seals are available for different applications. These pumps are foot mounted  and  are meant  for

  • Pressure Boosting Systems
  • Process Water Systems
  • Cleaning Systems
  • Sea Water Systems
  • Ultra Filtration Systems
  • Reverse Osmosis Systems
  •  Fire Fighting
  • Pressure Jet Cleaning
  • Water Supply System
  • Refrigerant Recycling
  • Very Light and Non Aggressive Chemicals Transfer
  • Ultra Filtration Systems Reverse Osmosis Systems

 

The Inside Picture
Technology

The technology of multistage pump is characterized by its ability to deliver a high constant pressure and a considerable flow. The Multistage Pumps are designed and manufactured to provide smooth, quiet operation and easy installation with minimum floor space.

All pressure-producing components are made of polished stainless steel for greater corrosion resistance, longer life and higher operating efficiency.

Each model is available with multiple impellers to maximize operating efficiencies and to reduce power consumption for any duty point

The pump is checked during each stage of the assembly process up to the final stage, wherein every pump is checked for flow, pressure, power consumption, leaks, vibration and noise.

Material Options

Multi-Stage Centrifugal Pumps are available in both Stainless Steel and Cast Iron fitted models with the following features:

Pump Shaft -
Stainless Steel

Castings -
Cast Iron, Stainless Steel and Carbon Alloy Steel

Impeller -
1.4306 DIN W.-Nr., 1.4401 DIN W.-Nr., 1.4024 DIN W.-Nr.,
1.4301 DIN W.-Nr., Gun Metal, DIN 1705, DIN 17662 /17672 and cast iron GG20

Seal Solutions

Seals are mounted internally wherein the Stationary part is ceramic or silicon carbide or carbon or tungsten carbide and the Dynamic part is either carbon or tungsten carbide or silicon carbide.

Motors

Motors, developed and manufactured are standard and can be used virtually for any application. Available in a variety of configurations, Point motors meet the demands of the pumping environment and the pumped liquid itself.

Efficiency

To make a positive impact in the pump efficiency level effective measures have been taken in designing every component. Superior manufacturing methods are adopted to achieve higher efficiencies.

Durability

The best material, high quality manufacturing methods and rigorous safety tests are conducted to ensure superior strength and durability of each product.

Motor

Motors, developed and manufactured are standard and can be used virtually for any application. Available in a variety of configurations, Point motors meet the demands of the pumping environment and the pumped liquid itself.

What follows is a synopsis of some of the most common motor variants offered by us. However this covers only a fragment of the total motor range. Motors can also be customized if the requirements are not covered by the overview. 

  • Special Supply Voltages
  • Extreme Operating Conditions
  • Special motor protection
  • Specific approval
  • Special motor design
Solution Description
Motors - VFD (Variable
Frequency Drive)
The motors with VFD options can operate at different speeds in order to the optimize pump performance based on the application
Slow speed motors
Slow speed motors are also available to obtain

  • Gentle handling of liquid
  • Pumping at low NPSH level
  • Reduce noise emission

Advance control can measure and adapt to special applications, e.g.;

  • Extended protection of process
  • Extended protection of pump and drive
  • Pump performance curve adjusted to match individual applications

Standard motors have built-in motor protection,pump monitoring and onboard regulator and sensor supply for control of primary process

Thermal Over Load
Protection
Motors with a built-in bimetallic thermal overload protector are available
Special Voltage Motors suitable for any supply voltage, single or three phase, as well as dual voltage options
Certificates The Point Pumps laboratory is glad to issue various certificates for motors

  • Noise
  • Vibration
  • Performance
  • Efficiency
Four - Pole Motor Four pole motors for applications where very low noise levels are required or for application that do not allow whipping of pumped liquid
Over or Under Size Motors For use where the viscosity or density is different from that of water, installations where the altitude exceeds 1000m or where the ambient temperature is very high
Terminal Box The terminal box can be replaced on four sides of the pump depending on
installation area
Enclosure Class Enclosure class IP 55 is standard on Point Pump motors. Enclosure class IP 65, IP 54 and IP 44 are available as options.

 

Seals

Extreme liquids call for extreme measures, when it comes to a pumping system. Most pumps are used for watery liquids at temperature below 80o C and pressure less than 10Kg/cm wherein standard seals are used. When the liquid parameters exceed these limits, special shaft seal solutions are adopted to guarantee reliable operation.

What follows is a synopsis of some of the most common shaft seal variants offered by us.
However this covers only a fragment of the total shaft seal range. Shaft seals can also be
customized if the requirements are not covered by the overview. Mechanical seal in accordance with DIN EN 12756

  • Aggressive  or  corrosive  liquids
  • Abrasive liquids
  • Poisonous  and  / or  explosive  liquids
  • High  viscosity  and  / or  sticky  liquids
  • Extraordinary high pressure
  • Extraordinary high or  low  temperature
Solution Description
Double shaft back - to - back seal For applications involving dangerous, flammable and very abrasive liquids, a double shaft back - to - back seal, fitted in a pressure chamber can be used.
Shaft seal variants Wide range of balanced catridge shaft seals with different seal faces such as Silicon Carbide, Carbon and Tungsten Carbide is also available to handle almost any industrial liquid.
Rubber materials Based on the liquid, a variety of materials like EPDM, Viton, Silicon, Neoprene and Nitrile are available
   

 

SHAFT

Multistage Pump Shafts are designed and manufactured in 1.4306 DIN W.-Nr., 1.4401 DIN W.-Nr. and 1.4024 DIN W.-Nr.

 

CASTINGS

PH and PR range pumps exposed to high pressure and corrosive atmosphere and suitable for any application. The components are available in a wide range of materials like Cast Iron, Alloy steel and Stainless Steel combined with various treatment processes.
Material composition standards adhere to IS, DIN, ASTM, etc.,

Hygienic
For food processing, pharma industries special hygienic materials are available.

Solution Description
Hygienic Special casting materials with electro polishing.
Acids Alloy steel castings and Stainless Steel combination with various treatments.
Soft water
distribution
Cast iron, Stainless Steel, Alloy steel castings.
Light and Non
Aggressive
Chemical
transfer
Stainless Steel castings, Alloy castings with various treatments.
Grey water
Transfer
Cast iron, Stainless Steel, Alloy steel
Flanges

Flanges are available in Oval, Round and Square shapes. Various material combinations are available for special applications.Material specification Standards and mounting standards are suitable to IS, DIN.

IMPELLER / DIFFUSER

Multistage pump Impellers and Diffusers are designed and manufactured for high hydraulic efficiency and less loss. The Impellers are dynamically balanced. The Impellers and Diffusers are available in various material grades like 1.4024 DIN W.-Nr., 1.4306 DIN W.-Nr., 1.4401 DIN W.-Nr., Carbon alloy Steels, non ferrous materials like Gun metal, Forged brass, DIN 1705, DIN 17662/17672, Cast Iron GG 20, Investment castings like 1.4301, 1.4304 DIN W.-Nr., etc. Fabricated Impellers and Diffusers are also available.

Atlas Curve
PH Range

PR Range

Technical Details
PH Range

PR Range