Unique Pump Systems, Kailash Industrial Complex, Vikhroli (W)

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Unique Pump Systems, Kailash Industrial Complex, Vikhroli (W)

Buy Gear Pump — UA Series

UNIQUE PUMP SYSTEMS®
Model UA Series (UA-5 to UA-800 including SP variants)
Material Mild Steel · Stainless Steel · Cast Iron · Gun Metal · Bronze · Super Alloys · Carbon Steel / Stainless Steel (Hardened Gears & Shafts)
Specification
Up to 70 kg/cm² 2–6000 LPM High temp fluids (Steam Jacketed) Up to 100,000 CST 50–1500 RPM 3/8"–8" connections
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📞 Speak to an Expert - Free ⭐ Industrial grade · 2 year warranty
Unique Pump Systems Rotary Gear Pump - Model 9
Unique Pump Systems Rotary Gear Pump - Model 10
Unique Pump Systems Rotary Gear Pump - Model 11
Unique Pump Systems Rotary Gear Pump - Model 12
Unique Pump Systems Rotary Gear Pump - Model 1
Unique Pump Systems Rotary Gear Pump - Model 2
Unique Pump Systems Rotary Gear Pump - Model 3
Unique Pump Systems Rotary Gear Pump - Model 4
Unique Pump Systems Rotary Gear Pump - Model 5
Unique Pump Systems Rotary Gear Pump - Model 6
Unique Pump Systems Rotary Gear Pump - Model 7
Unique Pump Systems Rotary Gear Pump - Model 8
Unique Pump Systems Rotary Gear Pump - Model 13

Unique Pump Systems UA Series — Rotary Gear Pump Range

India's Trusted Rotary Gear Pump Manufacturer — Now Serving Coimbatore

Coimbatore is unusual among the cities we supply to — it's home to one of India's largest clusters of pump and motor manufacturers, alongside its textile spinning mills, wet grinder units and precision foundries. Buyers here tend to be technically demanding, which suits us: our gear pumps supplied to Coimbatore plants go into everything from sizing and dyeing chemical transfer on a textile line to coolant and lubricant circulation in a machine shop. See our full Gear Pump range below.

We manufacture the full UA Series range from our Mumbai facility and have shipped to Coimbatore's industrial estates for years — Kurichi, Thudiyalur, SIDCO Ondipudur and the Peelamedu belt among them. Below is our complete specification range, working principle and performance data — the same technical information our Coimbatore customers use to select a model — followed by what's specific to sourcing here.

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How Does a Gear Pump Work?

Understanding the working principle of a rotary gear pump helps you select the right unit and maintain it effectively. Here is a step-by-step breakdown of the operating cycle:

Gear pump working principle diagram - oil flow through gear pump

Schematic diagram of an external rotary gear pump showing the fluid path from inlet to outlet

1

Fluid Enters at the Inlet

As the gears rotate and unmesh on the inlet side, expanding cavities between gear teeth create a low-pressure zone. This draws fluid in from the suction port smoothly — no priming required for most viscous fluids.

2

Fluid is Trapped and Carried

The fluid is captured within the pockets formed between each gear tooth and the pump casing. As the gears rotate, this trapped volume is carried around the outer casing — from the low-pressure inlet toward the high-pressure outlet.

3

Gears Re-mesh and Build Pressure

At the outlet side, the gear teeth come back into mesh, squeezing the fluid out of the tooth pockets and forcing it through the discharge port under controlled, consistent pressure — up to 70 kg/cm² in our UA Series.

4

Constant, Pulse-Free Delivery

The result is a steady, metered flow that varies only with rotational speed — not pressure fluctuations. This predictability makes gear pumps ideal for metering, dosing, and applications where a constant delivery rate is critical to your process.

UA Series Gear Pump — Complete Product Range & Specifications

Our UA Series covers the widest capacity range available from any single rotary gear pump manufacturers in India — from compact 2 LPM units for precision dosing to heavy-duty 6,000 LPM models for bulk fluid transfer. Every model is manufactured to the same exacting standards at our Mumbai facility.

Model No. Suction X Delivery Size Capacity Range LPM Std. Pump Speed RPM
UA-5 3/8" x 3/8" 2 To 5 1440
UA-10 1/2" x 1/2" 6 to 20 1500
UA-15 3/4" x 3/4" 21 to 30 1500
UA-15SP 3/4" x 3/4" 31 to 50 1500
UA-20 1" x 1" 51 to 75 1500
UA-25 1 1/2" x 1 1/2" 76 to 100 1500
UA-25 SP 1 1/2" x 1 1/2" 101 to 160 1500
UA-50 2" x 2" 161 to 225 1500
UA-50 SP 2 1/2" x 2 1/2" 226 to 350 1500
UA-100 3" x 3" 351 to 550 1500
UA-100 SP 3" x 3" 351 to 750 1500
UA-200 4" x 4" 751 to 1200 1500
UA-400 4" x 4" 1201 to 1800 960
UA-600 6" x 6" 1801 to 2500 960
UA-800 8" x 8" 2501 to 6000 720

Operating Speed Recommendations Based on Viscosity

Running your gear pump at the correct speed for your fluid viscosity is critical to achieving maximum efficiency, seal life, and longevity. Use this guide — or consult our engineers for a precise recommendation:

Viscosity Range (CST) Recommended Pump Speed (RPM)
Up to 400 1440
400 to 1000 960
1000 to 3500 720
3500 to 10000 500
10000 to 50000 200–300
50000 & above Please Consult Our Engineers

GENERAL TECHNICAL SPECIFICATIONS FOR GEAR PUMP

Unique Pump Systems — Complete engineering data, viscosity guidelines, multi-speed performance, and model options

Speed Recommendation for Various Viscosities

Viscosity Range (CST) Pump Speed (RPM)
up to 400 1440
400 to 1,000 960
1,000 to 3,500 720
3,500 to 10,000 500
10,000 to 50,000 200 - 300
50,000 & Above Please Consult

UNIQUE PUMP SYSTEMS - GEAR PUMP SPECIFICATIONS @ 1440 RPM

Model Size Capacity (LPM) Pressure (Kg) LPM @ Pressure HP RPM
UA 5 3/8" X 3/8" 5 3 Kg 5 0.5 1440
5 Kg 4.5 0.5 1440
7 Kg 4 0.5 1440
UA 10 1/2" X 1/2" 12 3 Kg 11 0.5 1440
5 Kg 10 0.75 1440
7 Kg 9 1 1440
UA 15 3/4" X 3/4" 25 3 Kg 23 1 1440
5 Kg 22 1 1440
7 Kg 21 1.5 1440
UA 15 SP 3/4" X 3/4" 45 3 Kg 42 1.5 1440
5 Kg 38 1.5 1440
7 Kg 35 2 1440
UA 20 1" X 1" 60 3 Kg 57 3 1440
5 Kg 55 3 1440
7 Kg 52 3 1440
UA 25 1.5" X 1.5" 125 3 Kg 120 3 1440
5 Kg 115 5 1440
7 Kg 110 5 1440
UA 25 SP 1.5" X 1.5" 175 3 Kg 170 3 1440
5 Kg 165 5 1440
7 Kg 160 7.5 1440
UA 50 2" X 2" 250 3 Kg 240 7.5 1440
5 Kg 230 7.5 1440
7 Kg 215 10 1440
UA 50 SP 2.5" X 2.5" 325 3 Kg 315 10 1440
5 Kg 305 12.5 1440
7 Kg 290 15 1440

UNIQUE PUMP SYSTEMS - GEAR PUMP SPECIFICATIONS @ 960 RPM

Model Size Capacity (LPM) Pressure (Kg) LPM @ Pressure HP RPM
UA 20 1" X 1" 42 3 Kg 40 3 960
5 Kg 39 3 960
7 Kg 36 3 960
UA 25 1.5" X 1.5" 88 3 Kg 84 3 960
5 Kg 81 5 960
7 Kg 77 5 960
UA 25 SP 1.5" X 1.5" 123 3 Kg 119 3 960
5 Kg 116 5 960
7 Kg 112 7.5 960
UA 50 2" X 2" 175 3 Kg 168 7.5 960
5 Kg 161 7.5 960
7 Kg 151 10 960
UA 50 SP 2.5" X 2.5" 228 3 Kg 221 10 960
5 Kg 214 12.5 960
7 Kg 203 15 960

UNIQUE PUMP SYSTEMS - GEAR PUMP SPECIFICATIONS @ 720 RPM

Model Size Capacity (LPM) Pressure (Kg) LPM @ Pressure HP RPM
UA 20 1" X 1" 60 3 Kg 29 3 720
5 Kg 28 3 720
7 Kg 26 3 720
UA 25 1.5" X 1.5" 125 3 Kg 60 3 720
5 Kg 58 5 720
7 Kg 55 5 720
UA 25 SP 1.5" X 1.5" 175 3 Kg 85 3 720
5 Kg 83 5 720
7 Kg 80 7.5 720
UA 50 2" X 2" 250 3 Kg 120 7.5 720
5 Kg 115 7.5 720
7 Kg 108 10 720
UA 50 SP 2.5" X 2.5" 325 3 Kg 158 10 720
5 Kg 153 12.5 720
7 Kg 145 15 720

High Capacity & Special Models

Model Size Capacity Range (LPM) Pressure / Remarks
UA 100 3" X 3" 350 to 550 Please consult our Application Engineer.
UA 100 SP 3" X 3" 350 to 750 Please consult our Application Engineer.
UA 200 4" X 4" 750 To 1200 Please consult our Application Engineer.
UA 400 4" X 4" 1200 to 1800 Please consult our Application Engineer.
UA 600 6" X 6" 2000 Please consult our Application Engineer.
UA 500 (Special) 3" X 3" 700 Please consult our Application Engineer.
UA 800 (Special) 4" X 4" 1750 Please consult our Application Engineer.

Model Options & Configuration Codes

Coding System: UA V M F X SJ HP SS — Each suffix adds specific functionality to the base pump.

Specification Type Application
Without Pressure Relief Valve UA Standard pump
With Pressure Relief Valve V Protect system from discharge line obstruction
With Mechanical Seal M Positive Sealing / Minimum Leakage (Packed pump can be retrofitted)
Flange Mounted F Provides vertical mounting facility
With External Bearing X Externally lubricated pump recommended where liquid does not contain lubricating properties
Steam Jacketed Type SJ Suitable for LSHS, FO, HFO, Glucose, Soap stock, High viscosity Oils, Wax, Grease, Coal Tar, Bitumen, Adhesives etc.
Higher Pressure HP Precision profile ground gear enables pressure up to 70 kg/cm²
Stainless Steel SS For food products & liquids that react with CI & other materials

Note: Special Non-Standard Models — UA 500, UA 800 and other customized designs available for specific applications. Contact engineering team for tailored solutions.

Performance Curves of Rotary Gear Pump

Performance curves help you understand how your gear pump will behave across its operating range — and are essential for verifying that the selected model will deliver the required flow at your system's discharge pressure. Unlike centrifugal pumps whose flow drops sharply with increasing pressure, a gear pump's performance curve is nearly flat — confirming constant flow across a wide pressure range.

Rotary Gear Pump Performance Curves - Pressure vs Capacity, Pressure vs Power Consumption

Performance curves showing Pressure vs Capacity & Pressure vs Power Consumption for rotary gear pump

Input B.H.P. to Pump Calculation

BHP (Rated) = Work Done / (Constant × Efficiency)

Q = [Capacity in m³/hr × Pressure in kg/cm²] / [27 (Hydraulic Constant) × Efficiency]

Relief Valve Operation

Built in pressure relief valve is provided in pumps to operate at higher than rated pressure i.e. it starts operating at 1 kg/cm² higher than rated pressure and fully opens 20% higher than rated pressure, taking maximum 30% higher power than rated power.

For model-specific and application-specific performance curves with exact data for your selected UA Series model and fluid viscosity, please contact our application engineering team.

📄 Request Performance Data

Cross Section of Standard UA Series Gear Pump

Understanding the internal construction of a gear pump helps you appreciate the engineering precision that goes into every Unique Pump Systems product — and why our pumps outlast cheaper alternatives.

Cross section diagram of UA Series rotary gear pump

Illustrative cross-section of a UA Series external gear pump showing key internal components. Contact us for detailed engineering drawings.

Why Coimbatore Buyers Choose Us

Coimbatore's own engineering base means our customers here know pumps well — they usually compare us against several other manufacturers before ordering. What tends to win them over:

  • Wide capacity range (2-6000 LPM) covers everything from a small dyehouse dosing line to a bulk fluid transfer job at a spinning mill
  • Hardened helical gears and precision-ground shafts built for the continuous-duty cycles common in textile processing units
  • Import-substitute capability — several Coimbatore machine shops have asked us to replicate an imported pump from a worn sample or drawing at a fraction of the cost
  • Direct manufacturer pricing and technical support, without a dealer layer in between
  • Multiple metallurgy options (cast iron, SS304/SS316, bronze, alloy 20) suited to the varied chemical exposure across dyeing, finishing and foundry operations
  • 2-year warranty backed by spares availability for every model we ship

Other Products from Unique Pump Systems

Beyond our industry-leading range of rotary gear pumps, Unique Pump Systems manufactures a comprehensive portfolio of industrial pumps and sealing solutions — engineered to the same exacting standards that our customers have trusted since 1988.

Lobe Pump

Hygienic rotary lobe pumps for food, beverage, pharmaceutical, and cosmetic applications requiring gentle, shear-sensitive fluid handling.

Centrifugal Pump

High-efficiency centrifugal pumps for water, low-viscosity fluids, and large volume transfer applications across industrial sectors.

Mechanical Seal

Precision-engineered mechanical seals designed to eliminate leakage and extend pump shaft seal life across a wide range of process fluids.

AODD Pump

Air-operated double diaphragm pumps for safe handling of flammable, toxic, or abrasive fluids — no electricity required, inherently safe design.

Coimbatore Gear Pump — Frequently Asked Questions

Questions we hear most from Coimbatore's engineers and buyers:

Yes, this is one of our most common requests from Coimbatore's machine shops and foundries. Send us the original drawing or a sample of your existing pump, and we'll manufacture a matching or improved import-substitute at our Mumbai facility, usually at significantly lower cost and shorter lead time than sourcing the original.

Yes. For dye liquor, sizing and finishing chemical transfer, we typically recommend SS304 or SS316 construction depending on the chemical's corrosivity, with seal options selected for the specific fluid. Share your process fluid details and our engineers will specify the right configuration.

We compete on the same field as Coimbatore's own well-regarded pump manufacturers, and we welcome the comparison. Our UA Series is built with hardened helical gears, precision-ground shafts and sintered bronze bushes for long service life, and we back every pump with a 2-year warranty and direct engineering support for selection.

Standard UA Series models are dispatched from our Mumbai works and typically reach Coimbatore within 2-4 days depending on the transporter. Custom metallurgy or non-standard configurations take longer - we'll confirm a firm date once your order is placed.

Yes, our UA-5 and UA-10 models cover low-flow requirements from 2 to 20 LPM, suited to low-flow process and test-rig applications common among Coimbatore's motor and appliance manufacturers. Let us know your exact flow and pressure need and we'll confirm the right model.

Need a Gear Pump for Your Coimbatore Facility?

Share your flow rate, fluid type and pressure requirement, and our application engineers will recommend the right UA Series model — with fast dispatch to Coimbatore.

📄 Request a Quote 📞 Call Our Engineer

⭐ 2-Year Warranty  |  Serving Coimbatore Since 1988  |  Free Application Engineering Support

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Unique Pump Systems also designs and manufactures import-substitute pumps based on drawings — and in certain cases manufactures gear pumps as per samples provided by customers.

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Unique Pump Systems

Kailash Industrial Complex, Vikhroli West, Mumbai

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