Blowers

Roots Blower Manufacturers & Suppliers in Tamil Nadu

Roots Blowers for industries across Tamil Nadu. Sizing, supply, installation & AMC support from Sigma Process Controls. Call +91 94870 69937.

Overview

About this equipment

A Roots blower moves a fixed volume of air with every turn of its rotors. That’s why it’s the standard choice for wastewater aeration, pneumatic conveying and any process that needs steady, oil-free air at low to medium pressure. Sigma Process Controls supplies Roots blowers in twin lobe and tri lobe designs, sized to your duty, with installation support, spares and AMC across Tamil Nadu.

[01] Blowers

How a Roots blower works

Two (or three) lobed rotors turn in opposite directions inside a casing, driven by timing gears so they never touch. Air is trapped between the lobes and the casing at the inlet and carried around to the outlet. Because the rotors don’t touch and the air chamber has no oil, the air delivered is completely oil-free. Output volume stays nearly constant even when discharge pressure changes, which is why Roots blowers are called positive displacement blowers.

[02] Blowers

Key features

Oil-free air

No oil in the air path. Safe for aeration, food and pharma use.

Constant volume

Delivers steady air flow against varying back pressure.

Pressure and vacuum duty

Works as a pressure blower or a vacuum pump.

Simple and rugged

Few wearing parts, long life, easy to service.

Complete package

Supplied with motor, base frame, belt or direct drive, silencers, safety valve, non-return valve and pressure gauge.

Optional acoustic hood

Brings noise down for sites near homes or offices.

[03] Blowers

Applications

Aeration in STPs, ETPs and CETPs

see Water & Wastewater Treatment and Sewage Treatment Plants

Equalisation tank mixing and filter backwash air scour

Pneumatic conveying of cement, fly ash, sand, grain and powders

Cupola and furnace combustion air in foundries

Fish pond and aquaculture aeration

Vacuum applications in paper, packaging and process plants

[04] Blowers

Twin lobe or tri lobe?

Not sure? Read our guide: Roots Blower vs Twin Lobe vs Tri Lobe.

	Twin lobe	Tri lobe
Lobes per rotor	2	3
Pulsation	Higher	Lower
Noise	Higher	Lower
Best for	Proven, economical duty in most plants	Noise-sensitive sites, MBBR and membrane systems

[05] Blowers

What we need to size your blower

Air flow required (m³/hr or CFM), or your plant’s BOD load and flow

Discharge pressure or tank depth, plus pipe length

Duty

continuous or intermittent, pressure or vacuum

Site conditions

power supply, indoor or outdoor, noise limits

[06] Blowers

Service, spares and AMC

We support Roots blowers after installation with commissioning, troubleshooting, genuine spares (lobes, bearings, timing gears, seals, oil) and annual maintenance contracts. For local service, see Roots Blower Service in Coimbatore and Roots Blower Service in Chennai.

[07] Blowers

Industries that use Roots blowers

Industry	Typical use
Sewage Treatment Plants	Aeration and equalisation in apartment, hospital and IT park STPs
Textile Dyeing, ETP & ZLD	Aeration for high-COD dye-house effluent
Tannery CETPs	High-volume aeration and sulphide oxidation
Foundry & Engineering	Sand conveying and cupola air
Food, Beverage & Dairy	Oil-free conveying of grain, flour and sugar
Paper & Pulp	Machine air, vacuum and ETP aeration

[08] Blowers

Why buy Roots blowers from Sigma

Sized to your duty point

you won’t pay for an oversized motor or end up with a starved aeration tank.

Twin and tri lobe options

we recommend the design that fits your site, not the one in stock.

Complete package

blower, motor, base frame, silencers, valves and gauges supplied together.

After-sales that lasts

spares, troubleshooting and AMC from our own team.

Local presence

support from Coimbatore and Navi Mumbai.

[09] Blowers

Roots blower suppliers across Tamil Nadu

We supply and service Roots blowers in Coimbatore, Chennai, Tiruppur, Erode, Hosur, Salem, Madurai and Trichy, and across the rest of Tamil Nadu and India.

FAQs

Frequently asked questions

Still have a question?

Talk to our team about your application.

What is the price of a Roots blower?

Price depends on air flow, pressure, motor size, lobe design and accessories such as acoustic hoods. Share your duty point and we’ll send a quotation.

Is a Roots blower the same as a twin lobe blower?

“Roots blower” is the general name for rotary lobe blowers. Twin lobe and tri lobe blowers are both types of Roots blower.

Why is my Roots blower overheating?

Common causes are a choked inlet filter, discharge pressure above rating, low or wrong oil, and worn lobes or bearings. Our troubleshooting team can diagnose it on site.

Do you supply Roots blowers outside Tamil Nadu?

Yes. We supply across India with support from Coimbatore and Navi Mumbai.

Explore More

Roots Blower vs Twin Lobe vs Tri Lobe

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Roots Blower Service & Repair in Coimbatore