Where compressed air and nitrogen are used in oil and gas
Most oil and gas air demand is temporary, mobile and tied to a schedule. A rig move, a pipeline spread, a module yard or a refinery turnaround each needs a defined volume of air at a defined pressure and quality for a defined period, and then the equipment leaves. That is why portable and rental compressors do so much of this work.
| Activity | Air or nitrogen need | Typical equipment |
|---|---|---|
| Rig and drilling site utilities | Tool air, engine starting air, bulk handling, general site air | Diesel portable screw compressors, receivers, hose manifolds |
| Fabrication and module yards | Plant air for grinders, gouging, welding support, painting | Electric or diesel screw compressors with dryers and distribution |
| Abrasive blasting and coating | High, steady flow at the nozzle with dry, clean air at the blast pot | High-flow portables, aftercoolers, moisture separators |
| Instrument and control air | Clean, dry air to valves, actuators and analysers | Compressors with dryers and filtration to a stated ISO 8573-1 class |
| Pneumatic and leak testing | Controlled filling to a planned pressure | High-pressure compressors or boosters, regulated manifolds |
| Pipeline drying and pigging support | Large volumes of dry air; sometimes nitrogen | Multiple high-flow units, desiccant dryers |
| Purging and inerting | Nitrogen of agreed purity and flow | Compressor feeding a membrane or PSA nitrogen generator |
| Turnarounds and shutdowns | Temporary plant and instrument air while permanent systems are down | Rental compressors and dryers tied into the plant header |
Rig air and yard air: sizing the base load
Rig and yard air looks simple but is usually under-specified. A useful brief separates the steady base load from the peaks. Start by listing every consumer: grinders, impact wrenches, chipping hammers, hoists, blast nozzles, air-driven pumps, starting air. Use each tool’s rated consumption at its working pressure, then apply a realistic use factor, because not every tool runs at once.
Add an allowance for hose losses and leakage, which on a temporary site with long hose runs and many quick couplings is rarely trivial. Then decide on redundancy. Where a stop holds up a crew, N+1 arrangement (one more machine than the duty needs) is common practice, so a single unit can be serviced or fail without stopping work.
Pressure matters as much as flow. Most tools work at around 6–7 bar at the tool, so the compressor must deliver more than that to overcome hose and fitting losses. Running every machine at its maximum pressure to compensate for undersized hoses wastes fuel and shortens tool life. Correct hose diameter and a well-placed receiver are usually cheaper fixes.
Instrument air: quality before quantity
Instrument air feeds control valves, positioners, actuators and analysers. Its demand is often small, but its quality and continuity are critical. Water, oil and particles cause sticking valves, blocked positioner orifices and corrosion, and a loss of instrument air can force equipment to its fail-safe position.
- Dryness. Instrument air is normally specified by pressure dew point. A desiccant dryer giving a typical −40 °C PDP is common practice for instrument duty, especially where lines run outdoors. A refrigerated dryer, typically around +3 °C PDP, may suit sheltered plant air.
- Oil and particles. Coalescing and particulate filters are selected to meet the class stated in the site specification, usually written in ISO 8573-1 terms.
- Continuity. Temporary instrument air during a shutdown needs standby capacity, a receiver sized for ride-through, and an agreed tie-in point and changeover method.
- Verification. Dew point should be measured at commissioning and checked during the hire, not assumed from the dryer nameplate.
When the plant’s own instrument air system is out of service, a rental package with compressor, dryer and filters can take over. We plan this as a tie-in with the site team so changeover does not drop header pressure.
High-pressure and booster duty
Several oil and gas jobs need air above standard plant pressure: pneumatic testing, some drilling methods, pipeline work and certain start-up duties. There are two common approaches.
| Approach | How it works | Suits | Points to plan |
|---|---|---|---|
| High-pressure portable compressor | A single package delivering air at elevated pressure, for example in the 20–30 bar range | Drilling, moderate-pressure testing, long hose runs | Flow drops as pressure rises; check delivery at the working pressure, not the maximum |
| Compressor plus booster | A primary compressor feeds a reciprocating booster that raises pressure further | Higher test pressures, deep drilling, specialist duties | Booster inlet conditions, cooling, matching flow between stages, safety valves at each stage |
Pneumatic pressure testing stores far more energy than hydrostatic testing at the same pressure, so it is governed by the site’s test procedure, exclusion zones and approvals. Our role is the air supply: correct flow and pressure, regulated filling, relief protection and gauges. The test procedure, acceptance and safety controls belong to the client’s engineers.
Nitrogen generation: why the feed air decides the result
On-site nitrogen for purging and inerting is usually made by a membrane or PSA (pressure swing adsorption) generator fed by compressed air. The generator can only perform as well as its feed.
- Flow. A generator needs considerably more air than the nitrogen it delivers, and the ratio rises as the purity demanded rises. The compressor must be sized from the generator maker’s air-to-nitrogen figures at the required purity.
- Pressure. Membrane and PSA systems have a specified feed pressure. Too low reduces output and purity; the compressor must hold it steadily.
- Air quality. Oil aerosols and liquid water damage membranes and adsorbent beds. Feed air normally passes through an aftercooler, dryer and staged coalescing filters, sometimes with carbon filtration.
- Temperature. Membrane performance changes with feed temperature, which matters in hot Indian summers and on exposed sites.
We supply and support the compressor and feed-air treatment. The generator’s purity, flow rating and approvals for the purging duty are set by its manufacturer and the client’s process team.
Temporary power-and-air packages
Remote yards, new sites and shutdowns often lack both power and air. Supplying them together as one package simplifies planning: diesel compressors for air, generators for lighting, welding, pumps and electric tools, and distribution boards and cable junction boxes to get power safely to the work. A single plan also coordinates fuel, operators, maintenance and transport.
- Define the air demand (flow, pressure, quality) and the electrical loads (single- and three-phase, starting currents).
- Select compressors and generators with standby where a stop would hold up work.
- Plan layout: placement away from exhaust re-entry, hose and cable routes, receivers, distribution boards and earthing.
- Agree fuel supply, refuelling method and storage with the site.
- Arrange transport, erection and commissioning, then hand over with readings recorded.
- Agree operators or technician cover for the hire and the demobilisation plan.
Project example
From 2008 to June 2009, our team supplied and ran a temporary power-and-air package at Kakinada, Andhra Pradesh, for an international oilfield-services company working as contractor on a major natural-gas development. The package included:
- Six high-pressure compressors: three rated 1,100 cfm at 300 psig, two rated 1,000 cfm at 275 psig and one rated 750 cfm at 150 psig.
- Generators from 1.5 kVA single-phase to 200 kVA three-phase.
- Cable junction boxes and distribution boards.
- Operators and a technician on site.
- Erection, commissioning and transport.
It is one of the records listed among our verified temporary air continuity projects, and shows the type of combined air and power support we organise outside our home states.
Safety and hazardous-area considerations
Oil and gas sites have their own permit-to-work systems, hazardous-area classifications and equipment rules. These are set by the site operator, and they come first.
- Standard diesel compressors and generators are not inherently suitable for classified hazardous areas. Whether equipment can be placed in or near a zone, and what protection it needs, must be confirmed by the client’s safety team before mobilisation.
- Engine air intakes and exhausts should be located where flammable gas cannot be drawn in and hot exhaust cannot cause ignition.
- Hoses, couplings and whip restraints must be rated for the working pressure; high-pressure lines need particular care.
- Safety valves, pressure gauges and isolation points should be checked at commissioning and kept accessible.
- Nitrogen is an asphyxiant. Purging work needs the site’s confined-space and gas-testing controls.
- Fuel storage and refuelling follow the site’s rules for spill control and fire protection.
We describe these points generally to help planning. They are not a substitute for the site’s hazard assessment, and we do not certify equipment for hazardous areas.
Nitrogen purging: how much gas a purge actually takes
Most nitrogen shortfalls on site come from estimating the purge as “one pipe volume”. The quantity depends on the purge method, the pressure the gas is held at, the temperature, the target concentration and the purity of the nitrogen itself. The target (for example oxygen below a stated percentage before hydrocarbon is admitted, or hydrocarbon below a stated fraction of the lower explosive limit before air is admitted) always comes from the operator’s procedure.
| Method | How it works | Suits | Planning quantity |
|---|---|---|---|
| Displacement (plug flow) | Nitrogen pushes the old gas out of one end at low velocity | Long pipelines and headers | About 1.5–2 pipe volumes without a pig; less with a purge pig, confirmed by analyser at the far end |
| Flow-through dilution | Nitrogen flows in while the mixture vents; concentration falls exponentially | Vessels, drums, heat exchangers | Theory with pure nitrogen: ln(start ÷ target) volumes, about 3.0 volumes from 20.9% to 1% oxygen; allow about 1.5 times that for dead zones |
| Pressure cycling | Pressurise with nitrogen, mix, vent; repeat | Vessels and equipment with dead legs or no through-flow | Set by the pressure ratio and number of cycles (worked below) |
All nitrogen quantities below are in Nm³ (0 °C, 1.01325 bar(a)), the basis most generators and suppliers quote. Converting a volume held at pressure P(g) and temperature T: Nm³ = V × (P(g) + 1.01325) ÷ 1.01325 × 273.15 ÷ (273.15 + T).
Worked example: purging a 6 km pipeline (illustrative)
- Line: DN200 Schedule 40, outside diameter 219.1 mm, wall 8.18 mm, so bore = 219.1 − 2 × 8.18 = 202.74 mm.
- Geometric volume = π ÷ 4 × 0.20274² × 6,000 = 193.7 m³.
- Purge at an average 0.5 bar(g), line temperature 35 °C: pressure factor = 1.51325 ÷ 1.01325 = 1.4935; temperature factor = 273.15 ÷ 308.15 = 0.8864.
- One pipe volume = 193.7 × 1.4935 × 0.8864 = 256.4 Nm³. Planning at 2 volumes (no pig) = about 513 Nm³.
- Packing the line afterwards from 0.5 to 2.0 bar(g) for a nitrogen hold adds 193.7 × 1.5 ÷ 1.01325 × 0.8864 = about 254 Nm³.
The pack needs about half as much nitrogen as the purge itself, so it adds roughly 50% to the order. It is often forgotten when nitrogen is ordered. The far-end vent must discharge to a safe location agreed with the site: nitrogen is an asphyxiant, and the vent stream carries hydrocarbon until the purge is complete.
Worked example: pressure-cycle purge and the purity floor (illustrative)
A 40 m³ vessel at 30 °C is cycled between 0 and 5 bar(g), that is 1.01325 and 6.01325 bar(a). The oxygen after n cycles is: oxygen in the purge nitrogen + (20.9 − oxygen in the purge nitrogen) × r to the power n, where r = 1.01325 ÷ 6.01325 = 0.1685. This assumes the vessel mixes fully on each cycle.
| Cycles | Oxygen with 100% nitrogen | Oxygen with 99.5% nitrogen |
|---|---|---|
| 1 | 3.52% | 3.94% |
| 2 | 0.59% | 1.08% |
| 3 | 0.10% | 0.60% |
| 4 | 0.02% | 0.52% |
Against a 1% oxygen target, pure nitrogen needs two cycles, but 99.5% generator nitrogen needs three. No number of cycles can take the vessel below the oxygen content of the purge gas. Choose a generator purity whose residual oxygen is well below the target, not equal to it. Each cycle uses 40 × 5 ÷ 1.01325 × 273.15 ÷ 303.15 = 177.9 Nm³, so three cycles take about 534 Nm³. Vented nitrogen must go to a safe location, because nitrogen is an asphyxiant. A vessel that has been purged stays oxygen-deficient: entry needs the site’s confined-space permit, gas testing and ventilation.
Pigging and tank blanketing: nitrogen flow arithmetic
Pigging and blanketing are flow problems rather than volume problems. The supply must keep up with the rate at which space opens behind the pig or above the liquid.
- Nitrogen-driven pig run. When the pig arrives, the whole line is full of nitrogen at the drive pressure. For the 6 km DN200 line above, driven at 4 bar(g) and 35 °C: 193.7 × 5.01325 ÷ 1.01325 × 0.8864 = about 849 Nm³, which is more than the purge itself. The supply rate sets the pig speed. Pig speed (m/s) is roughly the actual gas flow at drive pressure (m³/s) divided by the bore area (0.0323 m² here).
- Tank blanketing. The blanket regulator must replace the liquid pumped out. Pumping out 150 m³/h under a 5 mbar(g) blanket at 30 °C needs 150 × 1.01825 ÷ 1.01325 × 273.15 ÷ 303.15 = about 136 Nm³/h. Add thermal in-breathing when a hot tank is cooled by a monsoon downpour, calculated to ISO 28300. On large tanks this can exceed the pump-out figure.
- Pipeline drying. Dry air from compressors and desiccant dryers is normally used after hydrotesting to reach the specified dew point. Nitrogen follows only when the line must be inert before hydrocarbons are admitted. Dryer outlet dew point, not compressor size, usually limits the drying rate.
Choosing the nitrogen source for a shutdown or commissioning campaign
| Source | Practical purity | Suits | Limits |
|---|---|---|---|
| Cylinders and quads | Very high | Small, short duties; instrument and analyser use | A 47-litre cylinder at 150 bar(g) holds about 0.047 × 150 ÷ 1.01325 = 7 m³ of free gas (ideal-gas estimate); handling-heavy above a few tens of m³ |
| Liquid nitrogen with vaporiser | Very high | Large, fast purges; high flow for a few days | Road access, boil-off, cold-burn and oxygen-depletion hazards; 1 litre of liquid gives about 0.65 Nm³ |
| Membrane generator | Commonly 95–99.5% | Long-running blanketing and inerting at moderate purity | Air demand rises steeply with purity; output varies with feed temperature |
| PSA generator | Commonly 97–99.99% | Campaigns needing purity of 99.5% or better for days or weeks | Sensitive to oil carry-over and unstable feed pressure |
Worked example: sizing a generator for a turnaround campaign (illustrative)
- Nitrogen needed: pipeline purge 513 + line pack 254 + two vessels at three cycles each (2 × 534 = 1,067) = 1,834 Nm³.
- Cylinders would mean 1,834 ÷ 7 = about 262 cylinders. Liquid would be about 1,834 ÷ 0.65 = 2,820 litres. Both are possible, but a generator avoids repeated deliveries if the work is spread out.
- Window for the work: 16 hours, so 1,834 ÷ 16 = 114.6 Nm³/h. With a 20% margin, 137.6 Nm³/h. Select a generator of at least 140 Nm³/h at 99.5%.
- Feed air at an assumed air factor of 3.0 Nm³ of air per Nm³ of nitrogen for PSA at 99.5% (use the maker’s figure): 140 × 3.0 = 420 Nm³/h = 7.0 Nm³/min.
- Converted to free air delivery at a 35 °C intake: 7.0 × 308.15 ÷ 273.15 = 7.90 m³/min = 7.90 × 35.315 = 279 cfm. Add 10% for drains, filter losses and ageing to give about 307 cfm. A compressor of around 350 cfm at the generator’s feed pressure gives a sensible reserve.
Assumptions in this example: generator and feed figures are illustrative; the air factor, feed pressure and purity curve come from the generator maker. Standard diesel compressors and generator packages are not inherently suitable for classified hazardous areas, so the compressor, dryer and generator are normally placed in a safe area designated by the site, with intakes and engine exhausts away from any possible gas release and the nitrogen piped to the work.
The feed-air chain (aftercooler, dryer, coalescing and carbon filtration) is covered in nitrogen generator feed air. Where nitrogen is needed above generator outlet pressure, for example for pressure holds or for filling high-pressure storage, see nitrogen booster compression.
Keeping air and nitrogen packages running: faults, checks and repair scope
For a permanent refinery air package (scope of supply, ISO 8573-1 classes, N+1 arrangement and receiver hold-up after a trip), see refinery utility air systems. The table below covers the faults most often seen on air and nitrogen packages working in hot, dusty or coastal Indian conditions.
| Symptom | Likely cause | Check |
|---|---|---|
| PSA nitrogen purity drifting down over weeks | Oil or water reaching the carbon molecular sieve; leaking process valves | Oil indicator after carbon filter; feed dew point; valve leak test; analyser calibration with span gas |
| Membrane output falls in the afternoon | Feed temperature off design; heater or cooler fault | Log feed temperature against output; check the temperature control loop |
| Instrument air dew point rising | Spent or oil-fouled desiccant; purge valve fault; inlet temperature too high | Portable hygrometer at outlet; purge flow; aftercooler approach temperature |
| Header pressure dips on compressor changeover | Standby start too slow for the receiver hold-up | Time the standby from trip to load; compare with the calculated hold-up |
| Diesel portable trips on high temperature by midday | Dust-blocked cooler; hot exhaust recirculated to the intake; ambient above rating | Clean the cooler from the fan side; check the layout; confirm the ambient rating at 45 °C |
| Generator alarms after every power dip | No automatic restart; analyser not re-proving purity | Restart logic; product dump valve sequence on start-up |
When comparing repair and service proposals for these systems, check that each scope states:
- the makes and models covered, including the dryer, generator and analyser as well as the compressor
- how performance will be proved after repair: delivered flow, pressure dew point, nitrogen purity measured with a calibrated analyser, and ISO 8573-1 class where specified
- which critical spares are held at site: filter elements, drain valves, analyser sensor and span gas, solenoid valves and a separator element
- how temporary air or nitrogen will be provided while a package is down, including tie-in points agreed in advance
- compliance with the site’s permit-to-work and hazardous-area rules for every visit
How Reddy Compressors helps
Our team has also supplied compressors to a corrosion-protection and coating contractor working at a public-sector oil refinery and at a petroleum installation in Kurnool.
Since 2002 we have supplied, rented and serviced compressed-air equipment from our office at Tarnaka, Secunderabad, working with many makes rather than one. For oil and gas support we can:
- Help define flow, pressure and air-quality requirements for rig, yard, instrument, test and nitrogen-feed duties.
- Supply rental compressors of 50–2,000 cfm and 2–30 bar, diesel or electric, with dryers, filters, hoses and receivers. See rental engineering.
- Organise combined power-and-air packages with transport, erection, commissioning and operator support.
- Service and supply spares for site compressors of many brands.
Service teams cover all of Telangana and Andhra Pradesh. Equipment, rentals and spares are supplied across India, with project-based site support elsewhere where feasible, as the Kakinada gas-field project shows.
Our track record. We have supplied compressors to leading companies in oil and gas across Telangana, Andhra Pradesh and beyond – new and used machines, long-term rental, and breakdown cover when a site’s own compressor fails – backed by our own service team.
What to send us
- Site location, access and the expected hire period.
- Air duties: flow, working pressure and required air quality or dew point.
- Nitrogen generator make, model and feed-air requirements, if used.
- Electrical loads, if power is also needed.
- Hazardous-area, permit and safety requirements from the site.
- Tie-in points, hose runs and any standby requirement.
Call +91 99590 60718 or +91 92468 88812, WhatsApp +91 99590 60718, or email reddycompressors@gmail.com.
Frequently asked questions
What size compressor do I need for a nitrogen generator?
Size the compressor from the generator maker’s air consumption figure at the purity and nitrogen flow you need, not from the nitrogen flow alone. Higher purity needs proportionally more feed air. Hold the specified feed pressure, add margin for filter and dryer losses, and treat the air properly, because oil and water damage membranes and adsorbent beds. Send us the generator data and we will match the compressor.
What dew point is needed for instrument air?
The site specification decides, but instrument air is commonly dried with desiccant dryers to a typical pressure dew point of −40 °C, especially where lines run outdoors or through cool areas. Refrigerated dryers, typically around +3 °C PDP, may suit sheltered plant air but are often not enough for instruments. Dew point should be measured at commissioning rather than assumed from the dryer rating.
Can rental compressors be used in hazardous areas?
Standard diesel compressors are not inherently suitable for classified hazardous areas. Whether a unit can be placed in or near a zone, and what protection, location or approvals it needs, is decided by the site’s hazardous-area classification and the client’s safety team. We provide equipment details for that review and position units as agreed before mobilisation.
How is high-pressure air supplied for pneumatic testing?
Either a high-pressure portable compressor delivers air directly at the required pressure, or a primary compressor feeds a booster that raises pressure further. Filling is regulated, with relief valves and calibrated gauges. Pneumatic testing stores much more energy than hydrostatic testing, so the test procedure, exclusion zone and acceptance remain the responsibility of the client’s engineers.
Can you supply compressors and generators together for an oil and gas site?
Yes. We organise temporary power-and-air packages that combine diesel compressors, generators, cable junction boxes and distribution boards, with transport, erection, commissioning and operator support. From 2008 to June 2009 we ran such a package at Kakinada for an international oilfield-services contractor on a natural-gas development. Each package is planned from the site’s air demand and electrical loads, with standby where a stop would hold up work.
Do you support oil and gas projects outside Telangana?
Yes. Our service teams cover Telangana and Andhra Pradesh, and we supply compressors, rentals and spare parts across India, with project-based site support elsewhere where feasible. Our only office is at Tarnaka, Secunderabad. For a project in another state, send us the location, duty and schedule, and we will confirm what we can mobilise and how support on site would be arranged.
How much nitrogen is needed to purge a pipeline?
Work out the geometric volume from the bore and length, then convert it to Nm³ at the purge pressure and temperature. Multiply by about 1.5–2 pipe volumes for a displacement purge without a pig. For example, a 6 km DN200 line purged at 0.5 bar(g) and 35 °C needs about 513 Nm³ for two volumes. Packing the line to 2 bar(g) afterwards adds about 254 Nm³. The purge is complete only when an analyser at the far end confirms the oxygen or hydrocarbon target in the operator’s procedure.
Which nitrogen source is best for a refinery or terminal shutdown?
It depends on the total quantity, the rate and the purity. Cylinders suit a few tens of Nm³ for analysers and small equipment. Liquid nitrogen with a vaporiser suits large, fast purges over a few days where tankers can reach the site. A PSA or membrane generator fed by a compressor and dryer suits work spread over days or weeks. Add every purge, pack and pressure cycle in Nm³, divide by the working window and add a margin. Check that the nitrogen’s residual oxygen is well below the procedure’s limit, and place the package in a safe area agreed with the site.
Can compressed air be used instead of nitrogen for purging?
Not where hydrocarbons are present or are about to be admitted, because air brings in the oxygen the purge is meant to remove. Dry compressed air is widely used to dry new pipelines after hydrotesting and as the feed for nitrogen generators. However, the inerting step before hydrocarbon is admitted, and the gas-freeing step before air is let back in, use nitrogen to the purity set in the operator’s procedure. The nitrogen’s own oxygen content must be well below the target.
What does repair and service of oil and gas compressor systems cover?
It covers the whole chain, not only the compressor. Typical work includes airend and valve overhaul, cooler cleaning, controller and sensor faults, dryer desiccant and valve replacement, nitrogen generator purity recovery, and analyser calibration. Ask for performance proved after repair: delivered flow, pressure dew point and measured nitrogen purity. Also ask for a critical-spares list for the site and a plan for temporary air or nitrogen while equipment is down. All work must follow the site’s permit-to-work and hazardous-area rules.
Related pages
Field guide
Compressed air and nitrogen on oil and gas sites
Oil and gas facilities use compressed air for instruments, utilities and maintenance, and nitrogen for purging, blanketing and pressure testing. Many of these duties are safety related, and some take place in hazardous areas, so equipment selection and documentation need particular care.
Typical duties
| Duty | What it needs |
|---|---|
| Instrument air | Clean, dry, oil-free air at a stable pressure, with backup; a low dew point to stop moisture reaching valves and instruments |
| Utility and plant air | Tools, cleaning and maintenance; ordinary filtration |
| Nitrogen generation feed air | Clean, dry air to protect membranes or carbon molecular sieve beds |
| Purging and blanketing | Nitrogen at specified purity and flow |
| Pressure and leak testing | Air or nitrogen at test pressure, often from portable high-pressure packages |
| Shutdown and turnaround support | Temporary air and nitrogen in large volumes for a fixed period |
Points to settle early
- Hazardous area classification of where the equipment will stand, and whether diesel engines need spark arrestors, air-intake shut-off valves or other protection to site rules.
- Air or nitrogen quality, written as a purity or ISO 8573-1 class, with how it will be verified.
- Redundancy for instrument air: standby compressor and dryer, and receiver storage to keep instruments working during a changeover.
- Documentation: pressure equipment certificates, test records, hose certificates and permits required by the site.
- Logistics: transport, fuel, access and site induction for remote locations.
Portable packages for projects
Turnarounds, pipeline commissioning and testing often need high flow or high pressure for a limited time. Portable diesel compressors with aftercoolers, dryers and boosters, combined with nitrogen generators where purity allows, are planned as a package with hoses, manifolds and safety equipment. Plan early: equipment for hazardous areas and high-pressure duties takes longer to prepare.
What to send for a quotation
- Duty (instrument air, nitrogen purge, pressure test, shutdown support).
- Flow, pressure and purity or dew point required.
- Site location, hazardous area classification and project dates.
Send it through find my part or the spare parts enquiry, or call +91 99590 60718 or +91 92468 88812.
Technical content reviewed by D. Srinivas Reddy, Managing Partner and service engineer, Reddy Compressors. Last updated 7 November 2026. How our engineering content is reviewed.