High Pressure Laboratory Autoclaves / Stirred Reactors


We manufacture High Pressure, High Mass Transfer Area Stirred Reactors/ Autoclaves along with magnetically coupled, seal-less agitator. We offer easy to operate flameproof / non-flameproof control panels with PID controlled electrical heating & cooling arrangements. These control panels indicate parameters like pressure, temperature, agitator speed etc. with very high accuracy. Also, through these panels we can set alarms for high pressure & high temperature set points. Rupture disc, Safety relief valve provides over pressure protection ensuring the safety while operating equipment at High pressure. We also offercompletely integrated skid-mounted process systems. These systems are available with automatic (fully automated) or manual temperature, pressure, RPM, gas & liquid flow controls etc. We also offer PC based SCADA software to continuously monitor, control and record various parameters . An optional pneumatic lift is available on the floor stand model.

These autoclaves reactor pressure vessel are designed with special Agitator, which generates very high gas liquid mass transfer area, by recirculation of headspace gases. These are especially designed for Hydrogenation and various other high-pressure gas-liquid reactions. Also they can be used for various laboratory, academia research, R&D and production purposes. We have a wide range of stirred reactors from Lab scale to Pilot scale applications with extensive range of accessories.

ASME Pressure Vessel

Nano-Mag crafts Ex-proof / CE / PED / ASME pressure vessels, engineered to various exotic metals ASME code and tested to strict quality standard. Along with standard size reactors, we also design customized stirred reactors and pressure vessels for pressure up to 5,000 psi and temperatures up to 1200°F Contact us to design the right setup for your specific need.
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Advantages & Benefits of Nano-Mag Autoclaves

  • Faster Reactions:
    Very high Gas-Liquid mass transfer area
  • Shorter Batch Time:
    Faster batch time with optimum catalyst usage
  • No Leakage:
    The special design of magnetic coupling prevents any leakage of fluid and needs very low maintenance
  • High Reliability:
    Reactor pressure vessels of different size and various L/D ratios have sufficient space for variety of reactions, applications to match exact requirement
  • High Heat Transfer:
    Very high heat transfer co-efficient ensures faster removal of exotherm
  • Precise temperature control:
    Precise operating temperature despite higher rate of reaction
  • Better Product Economy:
    Minimum impurities and higher yields


  • Sizes from 50ml to 100 liters
  • Pressure range up to 350 bar
  • Temperature range up to 600°C
  • Different material of constructions like SS 316, SS 316L, Hastelloy C, Zirconium, Inconel, Monel, Titanium etc.
  • Conforming to international standards CE, PED, ATEX, ASME Pressure Vessels etc.
  • Skid mounted Hydrogenation pilot plant
Specifications1000 Series
(Lab Scale)
2000 Series
(Lab Scale)
3000 Series
(Kilo Lab Scale)
Autoclave Model NumberNMA 1050NMA 1100NMA 1400NMA 1750NMA 2001NMA 2002NMA 2005NMA 2010NMA 2020NMA 2025NMA 3050NMA 3100
Total Volume50 ml100 ml400 ml750 ml1000 ml2 litres5 litres10 litres20 litres25 litres50 litres100 litres
Operating VolumeMaximum35 ml50 ml200 ml400 ml600 ml1.2 litres3.5 litres7 litres15 litres19 litres38 litres75 litres
Minimum18 ml25 ml80 ml80 ml80 ml150 ml500 ml1 litre2 litres2 litres4.5 litres8.5 litres
L/D Ratio11.411.391.941.961.541.31.361.591.781.63
Maximum Head Openings554444444555
Motor Rating (HP)0.250.511.5
Motor TypeStandardFlame proof AC motor for Group IIA & IIB gases
OptionalFlame proof AC motor for Group IIC gases
ATEX (Explosion Proof)
Vessel MaterialStandardSS 316
OptionalSS 316L, Hastelloy C-276, Hastelloy C-22, Nickel-200, Monel-400, Inconel-600, Inconel-625, Titanium, Zirconium etc.
Design PressureStandard100 bar50 bar
Optional200 bar, 350 bar100 bar
Design TemperatureStandard250°C
Optional350°C, 500°C (600°C for Inconel)350°C
Heating SystemStandardElectric Ceramic Band Heater with Flameproof Group II A/B Junction Box & Ceramic Wool insulation & SS 304 Cladding
OptionalAluminum Cast heater with Flameproof Group II A/B Junction Box & Insulation
Aluminum Cast heater with Flameproof Group II C Junction Box & Insulation
Insulation & Cladding
SS JacketNA
Internal FittingsStandardSingle Tube in Tube out cooling coil (upto 100 ml), Helical cooling coil (from 400 ml), Thermowell, Dip tube
OptionalDip tube with Filter
Fittings on VesselStandardPressure Gauge, Safety Rupture Disc, Vent Valve, Gas Inlet Valve & Sampling Valve with Dip tube,
Temperature sensor (Flp/Exp)
OptionalPressure Relief Valve, Flush Bottom Valve, Ball Valve with charging funnel, Pressure Transmitter (Flp/Exp)
AgitatorStandardHollow shaft with High mass transfer area impeller for gas recirculation
Optional6 Blade Disc Turbine, 4 Blade 45° PBT, Anchor, Helix
Agitator SealingNano-Mag make Zero Leakage Magnetic Drive Coupling
GasketStandardPTFE'O' Ring
OptionalSpiral Wound Metallic Gasket
Non Asbestos (High Temperature)
Electrical SupplyVolts AC1Ø, 220 ± 10%3Ø, 415 ± 10%
3Ø, 415 ± 10% for Multiple Autoclaves
3Ø, 415 ± 10% Flameproof with Autocooling
Frequency50 Hz (60 Hz Optional)
Control PanelStandardNon Flame proof SS Control panel
OptionalFlameproof Group II-A/B control panel
Flameproof Group II-A/B+H₂ service
ATEX (Zone 1)
MountingStandardTable TopTrolleyFloor Stand
OptionalTrolleyTable TopNA

All Products, Product Specifications and Data are subject to change.

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Auto-cooling System:

The system is useful to control temperature overshoots for exothermic reactions. A cooling liquid is continuously circulated through internal cooling coil. Through our efficient Auto-cooling systems, it is easy to achieve fast and effective cooling of the reaction mass. The circulation of cooling liquid through the internal cooling coil will be switched on/off automatically after sensing the temperature of reactor. The system comprises of circulation pump, hose pipes with quick release coupling, SS 304 water tank. We offer Flameproof II-A/B, II-C & Non-Flameproof options as per requirement.

Back Pressure Regulator

Back pressure regulators are designed to provide steady control of inlet or upstream pressure in the autoclave. If the autoclave pressure increases, the regulator opens to vent out additional flow through the device. As the pressure decreases the regulator closes to restrict flow. This automatic adjustment of flow stabilizes the autoclave pressure.

Ball Valve with Funnel:

It is used to charge solid/liquid at Atmospheric pressure.

Chain Pulley

Weight of Head and Vessel increases with increase in size of the autoclave. For large reactors above 10 liters, it is difficult to handle heavy vessels and head. For such large autoclave we offer Chain Pulley Block arrangement as an option. With chain pulley block it becomes easy to lift the head or vessel of big autoclaves. We offerElectric (motorized)orManual chain pulley blocks as per requirements.


The condenser is used for condensing the vapors from autoclave. The condensed liquid can be collected in receiver pot or refluxed back in to the autoclave. We offer shell & tube condensers with surface area 0.1m², 0.2m², 0.5m², 1m² and 2m². We also supply custom size condensers with different MOCs like SS 316, SS 316L, Hastelloy C-276, Inconel etc.

Digital Pressure Indicator:

It is offered in addition to Analogue pressure gauge which is fitted on the vessel as standard accessory. Digital pressure indication unit comprises pressure transmitter fitted on the autoclave & digital pressure indicator mounted on the control panel with high pressure alarm. We offer Digital Pressure Indicator in different Material of Constructions like SS 316, SS 316L, Hastelloy C-276, Inconel etc. with Flameproof / Non-Flameproof Pressure transmitter.

Flameproof Control Panel:

Flame-proof control panels are mostly used in places with high concentration of flammable gases, vapors or dust. Electrical equipment which are installed in such conditions must be designed with flame proof enclosure to ensure it does not initiate an explosion due to arcing contacts or high surface temperature of instrument. We offer Complete Flameproof control panels enclosed in Aluminum casting for hazardous area for Zone-1, Group IIA/IIB or IIC as per the requirement.

Flush Bottom Valve:

Liquids &Slurry is discharged from the bottom of Autoclave / Reactor through Flush Bottom Valve. We offer zero hold-up, high pressure FBV with different materials of construction like SS 316, SS 316L, Hastelloy, Zirconium, Inconel, Monel, Titanium etc.

Gas Pressure Regulator:

These are used for charging different gases like Hydrogen, Nitrogen, Air etc. from the gas cylinder to the autoclave. It ensures a constant outlet pressure range from 1 to 100 bars. It regulates the pressure at the outlet of a cylinder to a set value regardless of the pressure inside cylinder.We offer SS 316 Pressure Regulator with Pressure Gauge, NRV, 4 meter long SS braided hose pipe & quick release coupling.

High pressure gas/liquid charging system:

This system is used to inject liquid/gases under pressure up to 100 bar during the reaction. It comprises of high pressure pot, valves, NRV, pressure gauge, high pressure hoses with quick release coupling. We offer 500ml, 1 Litre, 2 Litres, 5 Litres size High pressure gas/liquid charging system with different MOCs like SS 316, SS 316L, Hastelloy C-276, Inconel etc.

Pressure Relief Valve:

PRV is a safety device designed to protect a pressurized vessel or system during an overpressure event. It is necessary for additional safety of the autoclave & acts as a supplement to any safety device. The spring loaded Pressure relief valve releases the excess pressure when pressure inside the reactor increase beyond the specified design pressure or maximum allowable working pressure (MAWP), protecting the vessel & the operator. We offer PRV with different MOCs like SS 316, Hastelloy C-276, Inconel etc.

Receiver pot:

Receiver pot is installed at the outlet of the condenser to collect the condensate.

Reflux Condenser:

Reflux condenser condenses vapors produced in autoclave and drops the condensate back in to the autoclave. It consists of a water jacketed tube of 0.02 m² heat transfer area, connected directly to the vent of the autoclave. Condensed vapors from the autoclave are refluxed directly into the vessel and uncondensedvapors are released through a needle valve at the top of the condenser. We offer Reflux Condenserin various sizes like 0.01m², 0.02m², 0.05m² with different MOCs like SS 316, SS 316L, Hastelloy C-276, Inconel etc.

SCADA Software:

Supervisory Control and Data Acquisition (SCADA) is a software used for remote monitoring and control of the reactor / autoclave system. The process data is presented on a computer screen to operators where they monitor and control the process. We offer operator friendly SCADA based software for monitor and control of all parameters. Computer is usually in client’s scope.

Lab scale autoclaves are used in laboratories, scientific research institutes, universitiesfor R & D purpose (Eg. material test or stress test) and in pharmaceutical,chemical industry sectors for simulation of industrial sterilization processes in a smaller scale.

Our Autoclaves are designed to operate to high standards of reliability and quality as required in the laboratory and R & D environments. Various high pressure reactions and gas – liquid reactions withHydrogen, Ethylene Oxide, Ammonia, Oxygen, HCL, Phosgene, CO₂, CO etc. can be carried out in our Autoclaves.

  • Hydrogenation reactors
  • Polymerization reactors
  • Chlorination reactors
  • Alkoxylation pilot plants
  • Ethoxylation pilot plants
  • Alkylation reactors
  • Amination reactors
  • Esterification reactors
  • Bromination reactors
  • Carboxylation reactors
  • Oxidation reactors
  • Ozonization reactors
  • Catalyst testing / evaluation / screening
  • Catalytic reactor
  • Synthesis reactors
  • Crystallization reactors
  • Chemical research reactors
  • Petrochemical research reactors
  • Corrosion measurement
  • Corrosion testing autoclaves
  • Upstream research
  • Biomass research
  • Biopolymer research
  • Biorefinery research
  • Biofuels research
  • Zeolite synthesis
  • Nanoparticle synthesis