Verified Vacuum Pump Manufacturers in India
Industrial vacuum pumps draw gas out of closed vessels and lines for drying, distillation, packing and forming. Chemical, pharma, food and plastics plants buy them. diipl matches each buyer to a verified Indian maker and fixes the first meeting.
Also called: Industrial vacuum pump, Liquid ring vacuum pump, Rotary vane vacuum pump, Dry screw vacuum pump, Roots vacuum pump.
in India
from abroad
this machine
What is a commercial vacuum pump?
A vacuum pump removes gas from a closed vessel or pipe line, so the pressure inside falls below the pressure of the air outside. Industrial plants commonly use positive displacement pumps, which trap a volume of gas, squeeze it and push it out to the open air. The types differ in how they seal the moving parts: with oil, with a ring of liquid, or with tight clearances and no fluid at all. Plants fit them to dryers, reactors, evaporators, filters, packing lines and forming machines. Pumps that move liquids are a different product and are not covered here.
This page covers industrial and commercial vacuum pumps for plants and process lines; small laboratory pumps and appliance-type pumps are not covered.
How diipl verifies vacuum pump manufacturers
diipl checks every vacuum pump manufacturer before a buyer meets them. Every seller is GSTIN verified and capacity audited. IEC and the certifications your product and market need (ISO, CE, REACH, BIS) are confirmed before any meeting; Certificate of Origin and EIC inspection are arranged per shipment where required.
For vacuum pumps, the capacity audit also covers:
- a pump-down test on the maker's own test bench, with a calibrated gauge at the inlet, measuring pumping speed and base pressure on a pump of the size you want
- in-house machining and measuring of rotors, vanes, impellers and housings, because the small gaps between moving parts decide how well the pump holds vacuum
- balancing of the rotating parts and a run-in of every pump before dispatch, with noise, vibration and motor temperature recorded
- a leak check of casings, shaft seals and the inlet non-return valve, with the exhaust oil mist filter fitted on oil-sealed pumps
- a working demonstration of the gas ballast valve on a warm oil-sealed pump, or of the sealing liquid circuit on a liquid ring pump
We match your requirement to a manufacturer that has passed these checks and arrange a direct meeting.
Types of vacuum pumps we cover
Indian vacuum pump manufacturers on the diipl bench build these commercial and industrial types.
| Type | Typical buyers |
|---|---|
| Oil-sealed rotary vane vacuum pump (single and two stage) | Packaging, forming, food and beverage lines, and general industrial rough vacuum duty. |
| Liquid ring vacuum pump (single and two stage) | Chemical processing, petroleum production and processing, power generation and plastics processing plants. |
| Dry screw vacuum pump | Chemical and pharmaceutical plants that need oil-free vacuum. |
| Dry claw vacuum pump | Packaging plants, pneumatic conveying lines, clamping devices on machines, plastics processing and drying work. |
| Roots vacuum booster (mechanical booster pump) | Plants that need high pumping speed at medium vacuum, paired with a rotary vane or dry backing pump, often as a more economical choice to run than steam ejectors. |
Oil-sealed rotary vane vacuum pump (single and two stage)
An off-centre rotor with sliding vanes traps gas and pushes it out, and oil seals the gaps and lubricates the pump. Single-stage pumps are air-cooled, can run continuously at any inlet pressure and suit rough vacuum duty. Two-stage pumps are offered for a good ultimate pressure and improved vapour handling. A gas ballast control helps with water vapour, and a central inlet port lets a mechanical booster be mounted if required.
Liquid ring vacuum pump (single and two stage)
An impeller turns off-centre in a housing part-filled with liquid, water or another liquid that suits the gas. Centrifugal force throws the liquid into a ring that seals each gas pocket and takes up the heat of compression. Condensation in the pump even raises its nominal pumping speed, so it suits damp gas and vapour. The pressure it can reach is set by the vapour pressure of the sealing liquid, so it works only in the rough vacuum range.
Dry screw vacuum pump
Two screw-shaped rotors turn in opposite directions and compress the gas with no oil or other operating fluid in the pumping chamber, so the process gas cannot be contaminated by, or react with, an operating fluid. The pump runs hot enough that vapour does not condense inside, and the maker advice is to warm it before the process starts. It is energy efficient but sensitive to particles, so keep particles out of the inlet.
Dry claw vacuum pump
Two claw-shaped rotors turn in the pump stator without touching it, so there is no contact wear, and the design keeps oil away from the pumped gas. The rotors can be stainless steel and the chamber coated against corrosion, for harsh process conditions. The pumping chamber can be opened and cleaned quickly, and the pump is made for continuous operation. It suits packaging plants, pneumatic conveying, clamping devices and plastics machines.
Roots vacuum booster (mechanical booster pump)
Two figure-eight rotors run past each other, kept in step by a toothed gear, with a clearance of only a few tenths of a millimetre to the casing and no oil seal. Because internal leakage limits the compression ratio, a Roots pump is used together with a rotary vane or dry backing pump. The pair works well into the medium vacuum range, and large units reach very high pumping speeds.
What to specify when buying a vacuum pump
A clear vacuum pump specification gets you comparable offers and a faster meeting. Share these points with diipl and we match them to the right manufacturer.
| What to specify | Why it matters |
|---|---|
| Gas to be pumped and its vapour load | Say whether the gas is dry, damp, solvent-laden, corrosive or dusty. Liquid ring pumps tolerate vapour and liquid, dry screw pumps run hot to avoid condensation, and once-through oil-lubricated vane pumps suit acid vapours and monomers. |
| Operating pressure at the process | Give the pressure the process must hold in production and the gas flow at that pressure. This sizes the pump differently from a simple pump-down, because a steady gas load must be pumped away as well. |
| Base (ultimate) pressure | The lowest inlet pressure the pump can reach. For a liquid ring pump the attainable pressure is limited by the vapour pressure of the sealing liquid, and one maker gives 33 mbar with water at 15 degrees C. |
| Pumping speed at your operating pressure | Rated pump speed and the speed that reaches the vessel can differ, because filters, valves and pipes lower it. Size on the effective speed at your operating pressure, and ask for the speed curve against inlet pressure. |
| Chamber volume and pump-down time | Pump-down time is set by chamber volume and effective pumping speed. One worked example: a 500 litre chamber pumped to 1 mbar in 10 minutes needs about 24 cubic metres per hour of effective speed with a single-stage pump. |
| Water vapour tolerance and gas ballast (oil-sealed pumps) | Vapour that condenses in the oil impairs lubrication and can seize an oil-sealed pump. Gas ballast limits this but worsens the ultimate pressure while open, so ask for the water vapour tolerance and how the valve is used. |
| Exhaust oil mist filter (oil-sealed pumps) | Where no discharge line is connected, an exhaust filter catches the oil mist that an oil-sealed pump discharges. If oil must not reach the gas or the room at all, ask about a dry pump instead. |
| Inlet filter and condensate trap | Dust and grit wear the pump faster, and condensate can reach the oil. A filter or trap in the inlet line protects the pump but lowers the effective pumping speed, so allow for it in the size. |
| Sealing liquid supply and circuit (liquid ring pumps) | A liquid ring pump runs on a supply of sealing liquid. An open circuit can save part of it, and a closed circuit with a heat exchanger needs only small top-ups, which suits sites short of sealing liquid. |
| Supply frequency and drive | Catalogue flow is quoted for a stated supply frequency. One maker lists a single-stage series at 16 to 840 cubic metres per hour at 60 Hz. Ask for the figure at your own frequency and for the drive type. |
| Backing pump and bypass valve (Roots boosters) | A Roots booster needs a rotary vane or dry pump behind it. Ask for the speed ratio between the two, the maximum permissible pressure difference of the booster, and an overflow valve in the bypass for start-up at atmospheric pressure. |
| Warm-up and start-up routine | An oil-sealed pump should run for half an hour with the gas ballast valve open before it pumps vapour, and the open valve warms the pump. Ask for the maker's start-up routine and warm-up time. |
| Performance measured by a standard method | Ask that pumping speed, base pressure, water vapour tolerance, power use and lowest start-up temperature be measured by the ISO 21360-2 method for positive displacement pumps, so quotes compare on the same basis. |
| Explosion protection and wetted materials | If the gas can be flammable, ask for an ATEX-certified version and the area it is certified for. For corrosive gas, ask which materials touch the gas, since liquid ring pumps can be built in matched materials. |
Who buys vacuum pumps
Vacuum Pumps are bought by these commercial and industrial buyers, in India and abroad.
Buyers in India
- Chemical and pharmaceutical plants running distillation, drying, reactors, filtration and degassing
- Food and beverage packers using vacuum sealing and modified atmosphere packing
- Plastics and rubber processors using forming, extrusion and vulcanising
- Sugar factories running evaporators and pans under vacuum
- Paper, printing and pulp mills
- Machine builders who fit pumps into forming, packing and clamping equipment
Buyers abroad
- Chemical, pharmaceutical and food plants in the Middle East, Africa and South-East Asia
- Sugar and paper mills in the same regions
- Packing and forming machine builders in North America and the European Union that source pumps for their equipment
- Pump dealers, service companies and system builders that supply and repair vacuum pumps in these regions
HSN code and ITC-HS code for vacuum pumps
Vacuum pumps are classified under ITC-HS 84141010 (with maximum flow-rate greater than 5 m³/h(under standard temperature (273 k (0 °c)) and pressure (101.3 kpa) conditions)), within HS subheading 841410 (pumps; vacuum). The 6-digit subheading is the same in every country that uses the Harmonized System; the 8-digit ITC-HS line is the one India files.
In India the GST HSN code and the export ITC-HS code come from the same nomenclature. A GST invoice needs only the first 4 or 6 digits, depending on your turnover; the export shipping bill carries the full 8-digit ITC-HS line. The classification is shown here; the applicable GST rate is not. Official source.
Chapter
84
Machinery & Mechanical Equipment
Heading (4)
8414
Product group
Subheading (6)
841410
International, same worldwide
ITC-HS (8)
84141010
India files this line
Commonly confused with
Neighbouring subheadings under heading 8414. Misclassification between them is a common cause of a customs re-assessment.
- 841480 (Pumps and compressors; for air, vacuum or gas, n.e.c. in heading no. 8414)
- 841459 (Fans; n.e.c. in item no. 8414.51)
- 841490 (Pumps and compressors; parts, of air or vacuum pumps, air or other gas compressors and fans, ventilating or recycling hoods incorporating a fan)
India's exports, FY25-26
about $4.5 million
under ITC-HS 84141010, which covers all with maximum flow-rate greater than 5 m³/h(under standard temperature (273 k (0 °c)) and pressure (101.3 kpa) conditions), not only vacuum pumps. Source: DGCIS / MoC.
Your opportunity
Indian vacuum pump makers already ship this line abroad. diipl finds the markets where your machine can win and generates the verified buyers there.
A classification is a fact any lookup can give you. The correct code still does not tell you which countries are buying vacuum pumps right now, what duty each of them charges on the Indian line, or whether that demand is growing or fading. Those answers come from trade data, not from a code table, and they decide whether a market is worth entering. diipl's free Market Research Report answers them for your machine.
The markets that decide your strategy
Your free report shows who buys vacuum pumps from India the most, where demand grows steadily, and where it is emerging, so you target the markets you can actually win.
Who buys from India the most
The markets buying the most from India today.
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Where growth is consistent
Steady, rising demand, not one-off spikes.
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Where demand is emerging
The fastest-growing import markets.
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Buying a vacuum pump in India
- Get a GST invoice that itemises the pump, the motor, the starter or drive, the filters, the first oil or sealing liquid fill and any booster or backing pump.
- Agree the installation drawing before dispatch: inlet and exhaust pipe sizes, cooling air or water connections, drain points and the space needed to open the pump for service.
- Plan commissioning at your site: a test run at your process pressure and gas, a check of motor rotation, oil level or sealing liquid flow, and noise and temperature at full load, before you accept the pump.
- Ask for operator training on start-up, the gas ballast setting, oil or liquid checks, and what to do after a trip or power cut, and, on an oil-sealed pump, ask that an inlet non-return valve is fitted so oil cannot suck back into the vessel.
- Agree spares and service in writing: vanes or seals, oil, filter elements, exhaust filters and the service kit, with a named contact and a stated response time.
- Check delivery details: whether the pump arrives with or without oil, how a heavy booster set is lifted and set down, and who connects the piping.
Buying from Indian vacuum pump exporters
- Ask the importer which vacuum pump safety standard the technical file should cite, and which conformity route it expects for your pump, before you quote.
- Ask for the performance figures the importer wants on the quote, such as speed at stated pressures, base pressure and water vapour tolerance, measured by a named standard method.
- Match the supply voltage and frequency, since pumping speed depends on the frequency the motor runs at, and write the supply the pump is built for on the order.
- State whether the gas can be flammable. If so, ask the importer whether an explosion-protected version is needed and for what kind of hazardous area, and write it into the order.
- Agree the Incoterm in writing and arrange the Certificate of Origin. Show on the packing list whether oil or sealing liquid is fitted or supplied separately.
- Pack the pump on a skid with inlet and outlet ports capped, and send a spares kit of oil, filters, seals and vanes, and offer remote help by video call.
Standards and certifications for vacuum pumps
Vacuum Pumps for each market must meet that market's rules. diipl confirms the certifications your market needs before any meeting. Each requirement below links to its official source.
| Indian standard or rule | What it covers | Official source |
|---|---|---|
| IS/ISO 21360-1:2020Vacuum Technology Standard Method for Measuring Vacuum-Pump Performance Part 1 General Description | General description part of the BIS series on standard methods for measuring vacuum-pump performance. BIS lists it as identical to ISO 21360-1:2020 under dual numbering. | View source |
| IS/ISO 21360-2:2020Vacuum Technology Standard Method for Measuring Vacuum-Pump Performance Part 2 Positive Displacement Vacuum Pumps | Method of test for positive displacement vacuum pumps. BIS lists it as identical to ISO 21360-2:2020 and as replacing IS 6849 Parts 1, 2 and 3. | View source |
| Export requirement | Region | What it means | Official source |
|---|---|---|---|
| EN 1012-2 safety standard for vacuum pumps under the EU Machinery Directive | European Union | EN 1012-2:1996+A1:2009, Compressors and vacuum pumps, Safety requirements, Part 2: Vacuum pumps, is listed as a harmonised standard under the Machinery Directive, published in the Official Journal on 18 December 2009. The Commission's list shows its legal effect ending on 20 January 2027, so ask the importer which text the technical file should cite. | View source |
| Vacuum pumps are not named in Annex I of the EU Machinery Regulation | European Union | Parts A and B of Annex I to Regulation (EU) 2023/1230 list the categories of machinery to which the procedures in Article 25(2) or 25(3) apply. Vacuum pumps are not among the listed categories, so ask the importer which conformity route applies to your pump. | View source |
| ATEX Directive 2014/34/EU for equipment used where an explosive atmosphere may occur | European Union | The Directive covers equipment and protective systems intended for use in potentially explosive atmospheres, and has applied since 20 April 2016. If your pump will draw solvent vapour or other flammable gas, or stand in such an area, ask the importer whether an explosion-protected version is needed. | View source |
For vacuum pump manufacturers
diipl generates verified buyers for Indian vacuum pump manufacturers. We research which buyer segments and regions need your machine, run targeted outreach, verify each buyer's need, budget, authority and timeline, and arrange a direct meeting. We never publish your name, phone number or prices.
Start with a free Market Research Report
Tell us the vacuum pump you make. Our research team maps where your buyers are, then generates verified buyers matched to your capacity.
Vacuum Pump: frequently asked questions
Who makes vacuum pumps in India?
diipl keeps maker names off its public pages. Describe the gas, the working pressure, the flow you need and the hours of use each day, and diipl shortlists a maker after verifying its GSTIN and auditing its factory. For vacuum pumps the audit includes a pump-down test on the maker's own test bench with a calibrated gauge at the inlet. diipl also confirms the maker holds an Importer Exporter Code and the approvals your target market needs, then sets up the meeting.
What pumping speed and base pressure should I ask for?
Ask for the speed at your operating pressure, not only the rated speed, because filters, valves and pipes lower the speed that reaches the vessel. Ask for the base pressure the pump reaches and how it was measured. Then state the gas and vapour load, the duty hours, the cooling available, the supply frequency, the filters and whether oil may reach the process. Give the vessel volume and the pump-down time you can allow.
Which standards or certifications apply to vacuum pumps?
BIS lists IS/ISO 21360-2:2020, a method of test for positive displacement vacuum pumps. It replaces IS 6849 Parts 1 to 3 and is identical to ISO 21360-2:2020. It tells a maker how to measure pump performance, so ask for the pump's published figures to be measured by it. Whether a buyer needs a certificate beyond that depends on the buyer's market and the gas, so agree it in writing.
What is the HSN code for vacuum pumps?
Vacuum Pumps are classified under ITC-HS 84141010 (with maximum flow-rate greater than 5 m³/h(under standard temperature (273 k (0 °c)) and pressure (101.3 kpa) conditions)), within HS subheading 841410. The export shipping bill carries this full 8-digit line; a GST invoice needs only its first 4 or 6 digits, depending on your turnover. Confirm the 8-digit line against your exact machine before you file.
Can Indian manufacturers export vacuum pumps?
Yes, as long as the pump meets the safety law where it will be installed and the buyer gets the documents it needs. In the European Union, EN 1012-2 is the safety standard for vacuum pumps listed under the Machinery Directive, and the Commission's list shows its legal effect ending on 20 January 2027, so ask the importer which text applies. Buyers also ask for performance figures measured by a named method, the supply voltage and frequency, and a spares list.
Which industries buy vacuum pumps?
Chemical plants use them for distillation, drying, reaction, degassing and filtration. Petroleum, power generation and plastics processing plants also use them. Packers use them for vacuum sealing, and machine builders fit them to forming and clamping equipment. The pump type follows the duty: liquid ring pumps for damp gas, dry pumps for clean oil-free duty, and oil-sealed vane pumps for general rough vacuum.
I make vacuum pumps. How do I find verified buyers?
diipl studies which plants run the duty your pump suits, such as damp drying lines for liquid ring pumps or oil-free packing lines for dry pumps, and reaches them through its own outreach. Before an introduction, diipl checks that the buyer has an actual need, funding, a decision maker and a deadline. Your company name stays off public pages, and the first meeting is between you and that buyer.
Should I choose an oil-sealed, liquid ring or dry pump for a chemical or pharma duty?
Once-through oil-lubricated vane pumps suit acid vapours and monomers and are robust and easy to service. Dry screw pumps leave the gas free of oil, run hot so vapour does not condense and are energy efficient, but they dislike particles. Liquid ring pumps take vapour and liquid but use more energy, and their sealing liquid can carry process condensate and needs treatment before disposal. Decide on the gas, the cleanliness rules and who will service the pump.
How do I estimate the pump size for my chamber and pump-down time?
Work with effective pumping speed, the speed at the vessel after filters, valves and pipes. Pump-down time follows from the chamber volume and that speed. A published worked example needs about 24 cubic metres per hour of effective speed to bring a 500 litre chamber to 1 mbar in 10 minutes with a single-stage pump. Add margin, and have the maker prove the pump-down on a test bench.
What is gas ballast and when should I open it?
Gas ballast lets a precisely defined amount of air into the pumping chamber of an oil-sealed pump, so vapour is carried out before it can condense. Condensed water mixes with the oil, spoils its lubrication and can seize the pump. Run the pump warm with the valve open when pumping vapour, for about half an hour before wet work. Close the valve once the vapour has gone, because an open valve worsens the lowest pressure the pump reaches.
When do I need a Roots booster and what backing pump goes with it?
A Roots booster extends the working range of a rotary vane or dry backing pump well into the medium vacuum range and can be built for very high pumping speeds. It is used with a backing pump, because its compression ratio is only in the range of 10 to 100. The two pumps are matched by their speed ratio, called gradation. An overflow valve in the bypass lets the set start at atmospheric pressure.
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in India
from abroad
this machine