A typical liquid cylinder is an insulated vacuum-jacketed container. Safety relief valves and rupture discs protect the liquid cylinders from pressure build-up. Since these liquid cylinders operate at pressure up to 250 psig, their design must comply with Department of Transportation (DOT) specifications. Capacity of the liquid cylinders varies between 100 liters and 200 liters. Product may be withdrawn as a gas by passing liquid through a vaporizing coil , or as a liquid under its own vaporpressure.

Tanks may be spherical or cylindrical in shape. They may be mounted in fixed locations as stationary vessels or on railroad car and truck chassis for easy transportation. The unit measure of capacity of tanks is the gallon. Sizes range from 300 gallons to 420,000 gallons. The space between inner and outer surface are vacuum and be contained insulated powder (Perlite Powder) to protect heat transfer from outside. safety relief valves protect the tanks designed to ASME (American Society of Mechanical Engineering) specifications for the pressure and temperatures involved

Filters are used to remove particulate matter from the gas stream in which they are employed. The ideal placement of filters is just before the point-of-use of the gas, in order to trap any particles generated in the delivery line or from the source. They function by a mechanical action to limit travel of particulates by size through them. The size of the smallest particles removed is expressed as the rating of the filter. Membrane and ceramic type filters have a 100% filtration efficiency rating at a 0.01 micron level.

Useful lifespan of filters varies by application. Particulate size and density in the supply line , coupled with active time (duty cycle) being used , determine the useful life of the filter. When the pressure drop across the filter (upstream to downstream) increases by 50%, the filter is becoming clogged with particules and should be replaced.

Regulators are used in gas systems to reduce the pressure from a high pressure source to a safe working pressure for use. A pressure regulator should always be used when positive control of the pressure in a gas stream is required. A pressure regulator is as much a safety device as it is an important tool.

There are two basic types of pressure regulators: a single stage type and a dual stage type. The outward appearance of the two distinctly different types is somewhat similar and difficult for the novice to distinguish. Most pressure regulators are fitted with two gauges to monitor pressure(some line regulators only have one). This gauge is used to monitor the source pressure. The low pressure gauge connected internally to the outlet of the regulator is situated on the left side of the regulator when facing from the front. This gauge is used to monitor the outlet pressure (this is the only gauge most common on line regulators).

Ultra high purity gases or specialty gases (Standards mixed gases, Chemical gases,Electronic gases) are distributed by cylinders under pressure. These be constructed to withstand the high pressure and meet the requirements of the U.S. of Transportation (DOT)

All cylinders are identified by name gas (by color or label) and tagged for ready identification and basic hazardous warning information. All gases are supplied with valves having Compressed Gas Association (CGA) approved outlet connections.

Manifolds permit the connection of several cylinders to a common gas supply line provide a larger continuous supply of gas.
Two basic configurations are available to allow the user to make the most of the allotted space for the system. These two configurations are known as single row and double row. A single row configuration means that all of the connections to the manifold of cylinders is accomplished in a continuous straight line. A double row configuration means that the connections to the manifold occur on either side of the common line. This double row configuration has two equal rows of cylinders with the common line running between the two rows requiring support from either the ground up or suspended from above.

Vaporizer use for transforming liquid phase to be gas phase by liquefied.It works by increase liquefieds temperature of the air surround vaporizer until they change to be gases. Size of vaporizer is depended on the customer's consumption.

Pack is set of gethering cylinders into a group which 1 pack compiles 20 cylinders. Pack is used for the customer who has limit areas can reduce the cost of transportation and convenience to conection between manifold and pack. Pack size is appropriate for a consumption and stability of customers.