Raw Water Pump: Complete Guide to Types, Price, Working Principle, Uses and Best Options for RO Plants
The raw water pump is one of the most essential components in a water purification or RO plant setup. Whether it is a domestic RO system, a commercial 500 LPH unit, or a large-scale industrial RO plant, the raw water pump plays a critical role in drawing water from the source and pushing it into the treatment line. Without a high-quality raw water pump, the system cannot function efficiently.
This in-depth guide covers everything you need to know about raw water pumps, including raw water pump working principle, raw water pump price, raw water pump HSN code, types of raw water pumps, raw water pump for RO plant price, raw water pump pdf concept, pump house details, and comparisons.
If you want to purchase high-quality and durable raw water pumps for industrial, commercial, or domestic applications, explore options here:
Find Your Perfect Raw Water Pump
What Is a Raw Water Pump?
A raw water pump is a pumping device used to transfer untreated or raw water from its source—such as a borewell, overhead tank, underground reservoir, river, or storage tank—into an RO system or water treatment plant. It ensures the water reaches the pre-treatment stages at adequate flow and pressure.
Every reverse osmosis plant, no matter the size, requires a stable and continuous feed of water, and the raw water pump makes this possible.
In simple terms:
Raw water pump = Primary pump that feeds untreated water to the RO plant.
Without this first-stage pump, the RO membrane and pre-filters cannot function properly.
Why Raw Water Pump is Essential in RO Systems
The raw water pump serves as the backbone of the entire purification process. Here are the main reasons it is used:
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Supplies consistent inlet water pressure
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Ensures adequate flow rate
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Protects high-pressure pump from dry running
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Ensures efficient membrane filtration
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Stabilizes the operation of the RO plant
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Extends life of membranes and filters
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Helps maintain plant capacity (LPH output)
Whether it is a small domestic RO or a large industrial RO system, raw water pumps are mandatory before the high-pressure pump stage. Many people confuse raw water pump with RO high-pressure pump, but they are completely different.
Raw water pump = Low- to medium-pressure pump to feed untreated water
High-pressure pump = Pressure booster to push water into RO membrane
Raw Water Pump Working Principle
Understanding the raw water pump working principle helps in proper selection and maintenance.
The basic working principle is:
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The pump creates a suction force at the inlet.
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This suction pulls raw water from the source.
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The impeller (or piston/plunger depending on the pump type) rotates at high speed.
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The water is pushed into the discharge line at a stable flow.
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The pumped water enters pre-filters such as sand filter, activated carbon filter, or cartridge filter.
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After pre-treatment, the high-pressure pump takes over to feed the RO membrane.
In more technical terms, the pump converts electrical energy into mechanical energy, forcing water to move through the RO system pipeline.
Types of Raw Water Pumps
Different applications require different types of raw water pumps. Here are the major categories used in RO plants and water treatment systems:
1. Centrifugal Raw Water Pump
Most commonly used in domestic and industrial RO plants.
Features:
Simple design
High durability
Easy to maintain
Stable flow
Best for: Domestic RO + commercial RO + industrial RO plants
2. Submersible Raw Water Pump
Used when the water source is deep, such as borewell or underground tank.
Best for: Borewell applications, deep water sources
3. Jet Pump
Used where strong suction capability is required.
Best for: Long-distance water drawing applications
4. Horizontal Multistage Pump
Used in medium- to large-scale RO plants for stable flow.
Best for: 250 LPH to 2000 LPH RO systems
5. Surface Pump
Used for overhead tanks and open water sources.
Best for: Domestic RO plants, 25 LPH–100 LPH setups
6. Diaphragm Pump
Used in small domestic RO systems where low flow is needed.
Best for: Domestic RO up to 15 LPH
You can explore various raw water pump types at:
Premium Raw Water Pump Collection
Raw Water Pump for RO Plant
RO plants require raw water pumps suitable for specific capacities. The selection depends on:
TDS of raw water
Feed pressure required
LPH capacity
Source type (tank, borewell, overhead tank)
Suction head height
Discharge distance
Here is a quick chart showing the pump requirement:
| RO Plant Capacity | Recommended Raw Water Pump HP |
|---|---|
| 25 LPH RO | 0.5 HP |
| 50 LPH RO | 0.5 HP to 1 HP |
| 100 LPH RO | 1 HP |
| 250 LPH RO | 1 HP to 1.5 HP |
| 500 LPH RO | 1.5 HP |
| 1000 LPH RO | 2 HP |
| 2000 LPH RO | 2 HP to 3 HP |
A raw water pump ensures sufficient water supply to:
Multimedia filter
Activated carbon filter
Cartridge filters
High-pressure pump
Without a stable feed flow, RO plants cannot maintain efficiency.
Raw Water Pump 1 HP
One of the most popular searches is Raw Water Pump 1 HP because this power rating suits many RO systems such as:
100 LPH
250 LPH
500 LPH (small plants)
A 1 HP raw water pump offers:
Good suction
High delivery rate
Low electricity consumption
Strong motor performance
Typical specifications:
Power: 1 HP
Voltage: 220V
Flow Rate: 30–100 LPM
Head: 10–30 meters
You can buy high-quality 1 HP raw water pumps here:
Explore Raw Water Pumps
Raw Water Pump Price
Raw water pump price depends on factors like:
Brand
Power rating
Build quality
Material (cast iron, SS, aluminium)
Motor winding (copper/aluminium)
Application
Warranty
General price range in India:
| Pump Type | Price Range |
|---|---|
| Domestic raw water pump | Rs 800 – Rs 2,000 |
| 1 HP raw water pump | Rs 1,800 – Rs 5,000 |
| Industrial raw water pump | Rs 4,000 – Rs 15,000 |
| Multistage raw water pumps | Rs 8,000 – Rs 35,000 |
| Submersible raw water pumps | Rs 2,500 – Rs 10,000 |
This pricing varies by manufacturer and local market conditions.
To check updated raw water pump price in India, visit:
Explore Raw Water Pumps
Raw Water Pump for RO Plant Price in India
Many searches focus on raw water pump for RO plant price in India.
For industrial RO plants:
| RO Plant Capacity | Raw Water Pump Price (Approx.) |
|---|---|
| 100 LPH | Rs 1,800 – Rs 3,500 |
| 250 LPH | Rs 2,500 – Rs 4,500 |
| 500 LPH | Rs 3,000 – Rs 6,000 |
| 1000 LPH | Rs 4,000 – Rs 12,000 |
| 2000 LPH | Rs 6,000 – Rs 18,000 |
These are indicative prices and may vary.
Raw Water Pump HSN Code
The HSN code for raw water pump is:
HSN Code: 8413
Description: Pumps for liquids, whether or not fitted with a measuring device
This code applies to:
Raw Water Pumps
RO Plant Pumps
High Pressure Pumps
Submersible Pumps
Centrifugal Pumps
Raw Water Pump House
A raw water pump house is a protective enclosure used in industrial RO plants to:
Prevent motor damage
Reduce weather impact
Increase pump life
Simplify maintenance
Improve plant safety
A pump house is usually built near borewell or water source and contains:
Raw water pump
Valves
Pressure gauges
Electrical control panel
Safety switches
Industrial RO plants with capacities above 1000 LPH often require pump houses.
Raw Water Pump PDF (Conceptual Guide)
A raw water pump pdf typically includes:
Working principle
Specifications
Installation diagrams
Piping layouts
Maintenance guidelines
Troubleshooting steps
Safety tips
If you want, I can generate a full raw water pump PDF for you.
Best Raw Water Pump for RO Plants
When selecting the best raw water pump for RO plants, consider:
Motor durability
Copper winding
Stainless steel rotor
Pressure capacity
Noise level
Flow rate stability
Brand reputation
Some high-performing raw water pump brands include:
CRI
Kirloskar
Texmo
CRI High Pressure Pump Series
Local Indian manufacturers
For the best raw water pump for RO plants, explore:
Find Your Perfect Raw Water Pump
How to Choose the Right Raw Water Pump
Follow these steps:
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Identify RO plant capacity
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Check suction height
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Measure discharge distance
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Review motor HP
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Compare pump materials
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Check availability of spare parts
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Ensure compatibility with RO Tap Connector and piping
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Compare pricing
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Choose a reliable brand
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Buy from a trusted supplier
Maintenance Tips for Raw Water Pump
To extend life and improve efficiency:
Clean inlet filters regularly
Do not run pump without water
Check for leakage and vibration
Oil lubrication (only for models requiring it)
Ensure correct voltage supply
Replace worn-out seals
Check motor temperature
Service once every 6 months
Difference Between Raw Water Pump and RO Plant Pump
| Feature | Raw Water Pump | RO Plant Pump (High-Pressure Pump) |
|---|---|---|
| Purpose | Feed untreated water | Feed water to RO membrane |
| Pressure | Low to medium | High pressure |
| Phase | Single/Three | Mostly three-phase |
| Application | Pre-treatment | Membrane filtration |
Both pumps are essential for proper purification.
Raw Water Pump Applications
RO Plants
Water Treatment Systems
Bottling Plants
Industrial Filtration Systems
Municipal Water Treatment
Commercial Buildings
Hotels & Restaurants
Hospitals
Swimming Pools
Agriculture and Irrigation
Raw Water Pump for RO Plant in India
India has one of the largest markets for RO and water treatment systems.
Industrial growth, rising water contamination, and increasing demand for purified water have significantly boosted the usage of raw water pumps.
Whether you run a:
RO manufacturing business
Water treatment plant
Bottled water business
RO service and repair center
Industrial RO unit
You will need reliable raw water pumps for consistent water supply.
Conclusion
A raw water pump is one of the most important components of any RO system. From commercial RO units to large-scale industrial setups, raw water pumps ensure stable flow and adequate feed pressure. This detailed guide covered raw water pump working principle, raw water pump price, raw water pump HSN code, types of raw water pumps, raw water pump for RO plant, 1 HP pumps, pump house details, and more.
If you want to buy high-quality raw water pumps for RO systems, check available models here:
Find Your Perfect Raw Water Pump
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