AutoPrime Surface Pumps

The AutoPrime pump line is designed to provide excellent performance under all circumstances. To provide automatic 100% dry priming, the system consists of a vacuum pump and a priming tank unit. removes air from the suction pipe and initiates pumping, even at suction heights of up to 9.8 meters. The pump ranges for surface dewatering are intended for use in mining and construction, in the removal of floodwater, and in other municipal applications. These also include diesel dewatering pumps.

Self Priming Pump on small wheel CSP EW/MW

Suitable for dewatering foundations, trenches, pits, basements, infra/construction sites and...

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AutoPrime with Canopy CAP EC/MC

Depending on the availability of diesel or electricity, Autoprime with...

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AutoPrime without Canopy heavy trolley CAP ET/MT

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AutoPrime without Canopy small trolley CAP EW/MW

Depending on the needs and availability of resources, the AutoPrime...

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CAP on Skid

The AutoPrime dewatering pump offers versatile functionality, powered by either...

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Frequently Asked Questions

For 8” pumps, what’s the power rating for the engine?

Our 8” AutoPrime Surface Pumps are typically equipped with 43–425 HP diesel engines, selected to deliver the required head and flow for your application.
How often do we need to replace the oil filter & fuel filter?

We recommend replacing both filters every 250 operating hours or as per the engine manufacturer’s instructions for optimal performance.
What’s the time period of engine oil change?

Every 10 days or every 250 working hours whichever earlier.
What are the engines you’re using?

We primarily use Kirloskar, Eicher, Cummins engines—trusted for their durability, fuel efficiency, and nationwide service support.
Your pumps are of which size?

We can supply the pumps ranging from 4″,6″,8″ and 12” sizes. Pls contact us for more details.
How often we need to drain the auto prime tank?

You no need to drain the water from auto prime tank daily.
What type of drive source is used in Auto-Prime/Self-prime pumps?

Our pumps are available with diesel engine or electric motor drives.
What is Shut-off Head?

It is the maximum head at which the pump will shut to perform.
What is Total Head?

The sum of the Suction Head and Discharge Head.
What is Suction head?

Height between suction points of pump and water source level from where water is to be sucked.
What are the customizations available in our Auto-Prime Pumps?
We offer custom options for:
- Flow rate & head (up to 3,500 m³/hr & 150 m)
- Material of construction (SS316, SS410, CI, or special alloys)
- Mounting (skid, trolley)
- Noise control (silenced canopy)
- Real time monitoring (COSMOSMART remote monitoring)
What is Auto-Priming or Self-Priming?

Auto-Priming pumps use a vacuum /diaphragm pump and priming tank unit to remove air from the suction pipe, allowing pumping to start automatically—even with suction lifts up to 8.5 m.
What is Pump Priming?

Pump Priming is the process of removing air from the pump and suction line.
What is Priming?

Priming simply means preparing or getting something ready for operation.
What is a Auto-Prime Pump?

A Pump that runs on the surface adjacent to a water source, like Pond Water or a Well. Their nomenclature at Cosmos Pumps is – CAP.
Where is your factory located?

Our factory is located at:
I-23, DLF Industrial Area, Phase-1, Sector 32, Faridabad, Haryana, India – 121003.
Are you ISO certified?

Yes. Cosmos Pumps is ISO 9001:2015 certified, ensuring strict quality management practices.
How will you carry out after-sales support?

We provide on-site servicing, remote technical assistance, genuine spare parts, and operator training to keep your pump running reliably.
What’s the warranty for the pumps?

All Cosmos Pumps come with a 12-month warranty against manufacturing defects.
Can I get more than 1000 m3/hr flow rate in any of your pumps?

Yes. Many of our AutoPrime models are capable of flows well above 1,000 m³/hr.
What is the relation between Head and Flow?

As the head increases, flow decreases, and vice versa. Pumps are engineered to provide the best balance for the application.
What is Pump Flow rate?

It’s the volume of liquid the pump moves per unit time, usually measured in m³/hr or GPM/LPM.
What is Delivery Head?

The vertical distance from the pump’s centerline to the discharge point.
What is Pump Head?

The total height the pump can lift liquid, including suction lift, delivery head, and system losses.
Cosmos Pump manufactures which type of Pump?

We manufacture AutoPrime (Self-Priming) surface dewatering pumps, submersible pumps, and specialized solutions for mining, construction, flood control, and municipal needs.
What type of water is removed in the process of dewatering?

We can handle clear water, floodwater, groundwater, stormwater, sewage, and slurry depending on the pump model.
Cosmos Pumps manufactures both water-based and non-water-based pumps?

Yes. We produce pumps for water-based applications as well as industrial and process fluids.
What is dewatering?

Dewatering is the process of removing unwanted water from a site—such as from excavations, mines, or flood-affected areas—to create a dry, workable environment.
How often do we need to drain the Auto-Prime tank?

The Auto-Prime tank should be drained daily during continuous operation or after each job to maintain priming efficiency.

AutoPrime Surface Pumps