The free atmospheric air is sucked in by a multi-stage air compressor through a filter and compressed to the working pressure. After each stage, intermediate coolers and water separators are provided. The compressed air then passes through the (evaporation) pre-cooler and then to the molecular sieve battery where the moisture and carbon dioxide are removed from the process air. It then passes through the exchanger No. 1 where it is cooled by the out-going waste nitrogen and product oxygen.

A part of this cold air then flows through an expansion machine and the balance through the 2nd heat exchanger. The ratio of the two air streams is controlled by an expansion valve, RI. Both these streams of air then unite in the lower pressure column where it partially liquefies.

The liquid air (rich air) then passes through the expansion valve R2 to the upper column which is at a lower pressure than the lower column. Similarly the liquid nitrogen (poor liquid) travels from the lower column to the upper column through an expansion valve R3 where the separation of oxygen and nitrogen occurs. Nitrogen being more volatile passes out as a gas from the top of the column and this waste nitrogen flows through both the heat exchangers cooling the in-coming air. Similarly product oxygen is also passed through the two heat exchangers to cool the in-coming air and then to the filling manifold via a liquid pump. If a small amount of air is vented out from the upper column, higher purity nitrogen can also be obtained from this plant. R4 Valve is provided in order to fasten cooling during start-up.

Process Description

Nitrous Oxide is produced by heating Ammonium Nitrate to a temperature of 250 Deg.c. Ammonium Nitrate is decomposed in the process to give a mixture of Nitrous Oxide & super heated steam. At the same time impurities are produced including Ammonium Nitrate fumes, Nitrogen & other oxides of Nitrogen. The steam & impurities are removed by scrubbing with water, caustic soda and sulphuric acid in sequence Nitrogen present in traces is removed by bleeding from the top of storage vessels where Nitrous Oxide is stored, after compression by a compressor.

Nitrous Oxide Plant

• Available capacities - 8,16 and 24 u.m./hr(1 kg – 0.533cu.m)
• Manufactured under strict supervision of experienced personnel
• The nitrous oxide gas conforms to Indian pharmacopia standards, US & European Standards.

Plant Requirement

• Raw material Ammonium nitrate.
• Electric power - 100 HP (Max.)
• Cooling water system
• Good quality of water

Production
It is produced by heating Ammonium Nitrate to a temperature of approximately 250 C. Heating could be either electrically or by gas. It is then purified in a series of towers before collecting in a gas holder. Gas is then Compressed by a water lubricated compressor, dried and liquefied. Liquid Nitrous oxide is stored in storage vessels where Nitrogen , if present, is removed. Pure liquid Nitrogen oxide is then filled into cylinders by weight. Uses Nitrous oxide gas is mainly used for anesthetic purposes. It is administered with oxygen. It is also used as carrier gas in laboratory Instruments. It also finds application, as a propellant in aerosols and food stuff.

Gas Outlet Point

• Combination of easy installation and low cost maintenance.
• Non-interchangeable self-sealing, quick connect gas outlet for Oxygen/ N2O/ Vacuum/ C.A.
• Suitable for head wall units/wall/pendant units.
• Double locking (secondary) facility.
• Front fascia is non-interchangeable and gas color coated.

Ward Vacuum unit

• Unit capacity of 600/1000/2000ml, with a special design for minimum servicing and high efficiency.
• Provision of an ON/OFF knob, regulation knob, vacuum gauge graduated in mbar in the Regulator body.
• ON/OFF knob for start/stop of suction operation.
• Regulation knob allows the manual setting of required vacuum.
• Jar which is made of polycarbonate transparent and unbreakable autoclave at 134deg.C.
• Fluid control trap (safety) fitted for automatic and efficient shutdown of vacuum, to prevent the transfer of liquid to the vacuum regulator, pipeline and pump when required.

BPC Flow Meter

• Strong and reliable, with latest technical improvements and an accuracy of /-5%.
• Chrome plated brass body.
• Graduated flow tube and cover made of polycarbonate.
• Adjustable flow by needle valve (knob) with micrometrical regulation.
• Easy compensation of Back Pressure.
• Standard flow 0-15LPM.
• Inlet filter made of S.S.wire net.

Humidifier Bottle

• Made of polycarbonate, thus transparent & unbreakable.
• Fully autocalable at 134deg.C.

Our movable ceiling pendants is made of mild steel and aluminum, powder coated. It is highly reliable and maintenance free and it can be easily mounted on the wall. Our pendant extension arm length/console arm length is of about 1000mm with 350 degree minimum rotation of the pendant with swiveling arrangement. It also has a locking facility which locks the pendant rotation at every 15 degree. Some of the features of our product are

• Provision for electrical sockets with ON/OFF switch.
• Built in with 2 sets of I.V hooks and brackets.
• Provision for oxygen, nitrous oxide, air and vacuum outlets.
• Weight bearing capacity of up to 100kg, and its stainless steel tray also is adjustable.
• It has a provision for indicators to display the line pressure of oxygen, air, vacuum and nitrous oxide.

Our multi movement pendants are highly regarded in the industry due to their multi tasking ability. This is the made in compliance with all the regulatory norms and international standards. Raw materials used for this product are mild steel and aluminum, powder coated. The pendants’ extension arms has better swiveling arrangement and fetches better services by its cross connected arms, thus providing it a length that can reach better distances than normal pendants. Some of the features are

• Presence of electrical socket with ON/OFF switch.
• Provision for oxygen, nitrous oxide, air and vacuum outlets.
• Provision for indicators to display the line pressure of oxygen, air, vacuum and nitrous oxide.
• Longer foldable arms.

The Expansion Engine is a vertical single acting reciprocating type engine. The Electric Motor is used initially to start the machine. Thereafter the engine is moved by the air pressure itself and during which time, the engine motor retains the speed by acting as a brake. Since work is done by air in rotating the Flywheel, it loses its heat content (enthalpy). Thus the air gets cooled. This cooling is more than that of an expansion in an expansion valve. The Expansion Engine can be considered as three major units:

a. The drive unit.
b. The Cylinder Unit for air expansion
c. The Hydraulic Systems for operating the Valves.

LIQUID OXYGEN PUMP The Liquid Oxygen Pump is a single acting piston pump. It is used for filling Oxygen into Cylinders upto a pressure of 165 kgs./cm2. The pump is designed for assembly in air separation unit that works by pumping liquid Oxygen and gasifying the same in Heat Exchangers for final filling as gas in Cylinders. Control of liquid feed is not necessary, because the pump is designed in accordance with the plant size and the liquid produced is constantly pumped off. The drive unit is similar to any reciprocating machine with the Crank Shaft, Flywheel, Connecting Rod, Cross Head, etc. The Liquid Oxygen Pump consists of a stainless steel inside liner with liquid inlet and evaporated gas outlet ports. There are no valves on these ports, which are closed by the piston itself on the pressure stroke. The third outlet is the main discharge outlet with the two non-return ball valves. The two ball valves remain firmly closed during suction stroke, due to high pressure in partly filled cylinders. To ensure that these valves are fully closed, a positive pressure of about 60 kgs/cms2 must be maintained on it. When a fresh batch of cylinders is taken for filling, open the manifold valve slowly or use a spare batch of cylinders to ensure positive pressure on these valves.

We are a leading manufacturer and exporter of Air Separating Column. These air Separating colums are known for their following features:

• Highly Power Efficient
• Simultaneous Nitrogen Production
• Trouble Free Operation
• Maintenance Free
• Cost Efficient
• Simple To Operate

We offer quality gas manifold, which is an important component of medical gas pipeline system. Our manifolds can be operated manually or are fully automatic. It has an array of cylinders having top frame comprising of high pressure copper pipes with high pressure brass fitting made of high tensile brass, NRV and high pressure copper tail piece. This manifold acts as the secondary source of oxygen supply and shall automatically supply the pipeline when primary source of supply become exhausted or fails. Some of the features of this product are:

• Has high flow regulator with pressure gauges and safety valves.
• Provision of reserve system, which becomes operational in case of primary and secondary system failure.
• Automatic change over.
• Provision of Source shut-off valve for easy changing and positioning.
• Filters complies all the international standards. Its pore size is no greater than 100micro meter.

Our range of theater vacuum trolley are used in various medical applications. Some of the features of our vacuum trolley are:

• Mailsteel powder coated body
• 2000ml 2jar polly carbonated
• Vaccum regulators
• Vaccum filters

Our semi automatic control panels are highly test designed for various control functions required during supply of oxygen or N2O through the manifold unit. This automatic control panel is highly efficient in triggering the signal for the Reserve system to go operational in case primary and secondary system fails in emergency. This panel is normally connected in a permanent mode and change over is automatic. Some of the features of this product are:

• Manufactured under ISO 9001:2000 certified processes.
• Control panel cover made of M.S.duly powder coated.
• Compact and semi automatic control system for O2, N2O and CO2 services.
• Easy maintenance.
• Highly reliable.
• Designed for safety and continuity of flow supply at a constant pressure.
• Pressure gauge facility to indicate the gas pressure of each header and pipe line distribution pressure.
• Capable to provide a distribution flow rate in excess of 1500LPM.
• Incorporation of safety puncture in case pressure exceeds 100Psi.
• Provision of manual operation controls through pass system in case of failure of electronic as well as pneumatic system.