What are the points to remember while selecting a Clear Water pump?

Ensure the water is mostly clean without solids. Calculate actual working head considering static head, gradient and pipe losses. Use the correct pipe size and type for required flow. Check pH is not acidic or alkaline, liquid temperature is ambient, and whether the pump is needed for intermittent or continuous duty.

What are the points to remember while selecting a Dewatering pump?

Check whether a fixed or portable installation is required. Select a pump offering better efficiency and reliability since cost per litre pumped matters. Recheck head as dewatering sites usually have low head. Ensure inbuilt protection against dry running, mechanical jamming or overloading, and select pumps offering low minimum submergence.

What are the points to remember while selecting Waste Water or Non-clog pumps?

Calculate actual working head considering static head, gradient and pipe losses. Check pH, liquid temperature, minimum submergence and RPM requirements. Confirm intermittent or continuous duty and fixed or portable installation. Select pumps with solid handling suitable for the application, and use proper screening for heavy sewage to avoid jamming.

What are the points to remember while selecting Slurry pumps?

Calculate actual working head, check pH, liquid temperature and specific gravity of the liquid. Consider minimum submergence and RPM requirements, plus intermittent or continuous duty. Select pumps with solid handling suitable for the application, and use proper jetting arrangements for high concentration slurry.

What are general applications of clear water pumps?

Clear water pumps are used for pumping water from underground to overhead tanks in housing and commercial complexes, hotels and hospitals, fountains, waterfalls, landscaping, agriculture and irrigation, village and municipal water supply, river water pumping, and fire fighting.

What are general applications of Dewatering pumps?

Dewatering pumps are used for basement and storm water dewatering, pumping contaminated water with sand and sludge at construction sites, sea water pumping, industrial water dewatering, civil infrastructure and tunnelling projects, flood relief pumping, and mines dewatering.

What are general applications of Non-clog pumps?

Non-clog pumps are used for raw and unscreened sewage, industrial wastes and effluents, municipal sewer lines, tailing ponds, sewage treatment plants, effluent treatment plants, pharmaceutical units and textile units.

What are general applications of Slurry pumps?

Slurry pumps are used for highly abrasive slurries, mill scale, iron ore and pellet slurry, mineral ore processing units, ash and coal handling plants, granite and marble slurry, jack well and intake well cleaning, and removal of sand deposition at dam galleries and penstock tunnels.

What are the checkpoints before starting the pump?

Ensure the impeller is free if unused for long periods. Secure all electrical and piping connections. Carry out a Megger test to check winding continuity and give a quick start to check the flow direction. Check for noise, vibration or abnormal current periodically, and keep genuine spare parts in stock.

What are the points to remember while operating a pump?

Use an adequate power source and maintain rated voltage, current and frequency. Maintain minimum submergence level and avoid sharp bends in hose or pipe. Use proper cable size and inlet screening. Ensure liquid temperature stays within permissible limits and accessories are compatible with the pumped liquid.

Is your pump giving insufficient or no discharge?

This can be caused by low voltage or frequency, incorrect direction of rotation, system head higher than pump head, piping leakage, a choked impeller, clogged strainer, or inadequate water level. Check supply voltage, correct rotation direction, inspect piping, and clean the impeller or strainer as needed.

Is your pump giving abnormal noise or vibration?

This may be due to incorrect rotation direction, runaway operating condition, loose nuts and bolts, cavitation, bent shaft, worn bearings or a worn impeller. Correct rotation, throttle the valve, tighten fittings, or replace worn parts as required.

Is your pump drawing excessive current?

This may result from mechanical jamming, high supply frequency causing high motor speed, low voltage, worn bearings, or a defective or short-circuited cable. Check and clean the impeller, verify rated frequency and voltage, and inspect cable condition.

What to do when your pump is not starting?

Check for inconsistent power supply, improper pump-panel connection, defective or cut cable, a choked pump, or winding short circuit. Ensure consistent rated power, proper connections, and contact the company service centre if rewinding is required.

What are the checkpoints for preventive maintenance of submersible pumps?

Ensure proper control devices, clean contactors periodically, check current values against the pump manual, verify supply voltage and frequency, inspect for noise or vibration, check cable condition and insulation resistance above 100 megaohms, and ensure no piping leakage or mechanical jamming.

What are the checkpoints for corrective maintenance of submersible pumps?

Always disconnect electrical supply before maintenance. Keep genuine spare parts in stock, check for wear in impeller, wear ring, casing and bowl, and replace as needed. Refer to the pump manual for mechanical seal fitting and cable replacement, and ensure motor rewinding is done by trained personnel.

How to get your dewatering pump monsoon ready?

Audit your existing pumping system and arrange standby pumps. Ensure proper control devices and undamaged cables, check insulation resistance and winding continuity, and verify the impeller is free of jamming. At site, secure all connections, check for leaks, noise or vibration, and train operators with a stock of genuine spare parts for emergencies.

Slurry Pumps

Slurry is a mixture of solids and liquid, generally water. The particles can be both abrasive & nonabrasive, although abrasive particles are very much common. The purpose to move slurry can be transporting as much solids particles as possible, hydraulically, along with the given liquid. There are many factors to be considered while selecting a slurry pump like; Particle size- Specific gravity of solids, Specific gravity of liquid, Concentration of slurry, Shape of particles etc. Slurry can be further classified in to two types – 1. Non – Settling Slurry & 2. Settling Slurry.

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Application

Darling Pumps has one of the complete range of Submersible Slurry handling pumps, from regular slurry handling pumps, to jacketed design submersible slurry pumps to Cantilever slurry handling pumps. The uniqueness of these submersible slurry pumps is that they can be customized in many ways to suit specific requirements of our clients & can be offered for hot temperature slurries as well. Darling Cantilever pumps are available in direct drive or belt drive options. These submersible slurry pumps are very much ideal for pumping highly abrasive slurries with specific gravity upto 2.8 & temperature upto 90ºC.

Industries & Clientele

Clear & Raw Water Pumps

Stainless Steel Pumps

Hot Water Pumps

Slurry Pumps

Nonclog & Waste Water Pumps

Dewatering Pumps

Slurry Pump FAQs

Which pumps are Slurry Pumps ?

Slurry Pumps are a heavy and robust version of a centrifugal pump, capable of handling tough and abrasive duties.The term Slurry Pump, as stated, covers various types of heavy duty centrifugal pumps used for hydraulic transportation of solids.

Where are Slurry pumps used? / What are some of the applications of Slurry pumps ?

Slurry Pumps are used for a variety of applications such as highly abrasive slurries, mill scale, iron ore & pallet slurrie, Mineral Ore processing units, Ash & Coal Handling Plants, Granite & Marble Slurry, Jack well & intake well cleaning, Removal of sand deposition at dam galleries & penstock tunnels & many more similar applications.

What does abrasion mean?

Solid particles in the pumped medium generate friction, which leads to abrasion of the material. This is a frequently occurring problem in sewerage technology caused by sand in the pumped medium, which destroys pump components like impellers, casing etc,.

Why is my pump giving insufficient or no discharge?

Your submersible pump may not be giving proper discharge owing to various reasons. Please check the manufacturers troubleshooting guide, consult a trained mechanic or a customer service representative. The troubleshooting guide is available in Manual provided with the pump.

FLOW	:	Upto 450 LPM
HEAD	:	Upto 25 m
RATING (kW)	:	0.55kW to 2.2kW
FREQUENCY	:	50Hz
SUPPLY	:	Three Phase – 415 V
MOTOR	:	Wet type / Dry Type
RPM	:	2 Pole
SOLID PASSAGE	:	Upto 8 MM
METALS WE DO	:	AL-LM-25, Cast Iron & Various grades of SS

Products

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Slurry Pumps

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Application

4DRR Series Pump

Pump

0.55kW to 2.2kW

Technical Specification

Family Curve

Industries & Clientele

Clear & Raw Water Pumps

Stainless Steel Pumps

Hot Water Pumps

Slurry Pumps

Nonclog & Waste Water Pumps

Dewatering Pumps

Slurry Pump FAQs

Which pumps are Slurry Pumps ?

Where are Slurry pumps used? / What are some of the applications of Slurry pumps ?

What does abrasion mean?

Why is my pump giving insufficient or no discharge?

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