Applications of Pressure reducing regulator

Pressure reducing regulator

Air compressor

Air compressors are used in industrial,commercial,and home workshop environments to perform a variety of jobs,including blowing things clean;running air tools;and inflating tires,balls,and more.Regulators are often used to adjust the pressure coming out of an air receiver (tank) to match the pressure required for the task.Typically,when one large compressor is used to supply compressed air for multiple purposes (often called "shop air" if installed as a permanent duct through the building),additional regulators are used to ensure that each individual A tool or function accepts the stress it needs.This is important because some pneumatic tools or uses of compressed air require pressure that can cause damage to other tools or materials.

Airplane 

Pressure regulators are used in aircraft cabin pressurization,canopy seal pressure control,potable water systems and waveguide pressurization.

Aerospace

Aerospace pressure regulators are used for propulsion pressure control in reaction control systems (RCS) and attitude control systems (ACS) where high vibrations,large temperature extremes and corrosive fluids are present.

Cooking

Pressurized containers can be used to cook food faster than at atmospheric pressure because the higher pressure raises the boiling point of the contents.All modern pressure cookers will have a pressure regulator valve and a pressure relief valve as safety mechanisms to prevent an explosion if the pressure regulator valve is unable to relieve the pressure sufficiently.Some older models lack a safety release valve.Most home cooking models are built to hold low and high pressure settings.These settings are typically 7 to 15 psi (0.48 to 1.03 bar).Almost all home cooking equipment will feature a very simple single stage pressure regulator.Older models would simply place a small weight on top of the opening,lifting it with excess pressure to allow excess steam to escape. Newer models often contain a spring-loaded valve that lifts and allows the pressure to escape when the pressure in the container rises.Some pressure cookers have a quick release setting on the pressure regulator valve,which essentially lowers the spring tension,allowing the pressure to release at a quick but still safe rate.Commercial kitchens also use pressure cookers,and in some cases oil-based pressure cookers for quick frying of fast food.This pressure vessel can also be used as an autoclave to sterilize small batch equipment and home canning operations.

Water pressure drop

Water pressure regulating valves restrict inflow by dynamically changing the valve opening so that when the external pressure is low,the valve is fully open, while high external pressure causes the valve to close.In the absence of pressure,water can flow backwards without hindrance.The water pressure regulating valve does not function as a check valve.They are used in applications where the water pressure is too high at the end of the line to avoid damage to equipment or piping.

Welding and Cutting

Oxy-fuel welding and cutting processes require gas at a specific pressure, and regulators are often used to reduce the high pressure in storage cylinders to a pressure that can be used for cutting and welding.Oxygen and gas regulators typically have two stages:The first stage of the regulator releases gas from the cylinder at constant pressure,although the pressure in the cylinder decreases as the gas is released.The second stage of the regulator controls the pressure drop from intermediate pressure to low pressure.Final flow can be adjusted at the torch.Regulator assemblies typically have two gauges,one indicating cylinder pressure and the other indicating delivery pressure.Inert gas shielded arc welding also uses high pressure stored gas supplied through a regulator. There may be flow meters calibrated for specific gases.

Propane/LPG

All propane and LPG applications require the use of a regulator.Because the pressure in a propane tank can fluctuate significantly with temperature,a regulator is necessary to provide a steady pressure to downstream equipment.These regulators typically compensate for tank pressures between 30-200 psi (2.1-13.8 bar) and typically provide 0.4 psi (28 mbar) at 11 inches of water and 1.3 psi at 35 inches of water for residential applications inches (90 mbar) for industrial applications.Propane regulators vary in size and shape,delivery pressure,and adjustability, but their purpose is the same,to provide a constant outlet pressure for downstream requirements.International settings for domestic LPG regulators are 28 mbar for butane and 37 mbar for propane.

Gas powered vehicles

All vehicle engines (combustion engines or fuel cell electric powertrains) fueled with compressed gas require a pressure regulator to pressure the stored gas (CNG or hydrogen) from 700,500,350 or 200 bar (or 70,50,35 and 20 MPa) to working pressure.

Recreational vehicle

For recreational vehicles with pipes,a pressure regulator is needed to reduce the pressure of the external water supply connected to the vehicle pipes, because the water supply altitude may be much higher than the campsite,and the water pressure depends on the height of the water column.Without a pressure regulator,in the mountains.The intense pressure some campsites experience can be enough to cause campers to burst water pipes or dislodge pipe joints, causing flooding.Pressure regulators for this purpose are usually sold as small screw-on attachments that fit in-line with the hoses used to connect the RV to the water supply,which are almost always thread-compatible with common garden hoses.

Breathing gas supply

Diving regulator and Self-contained breathing apparatus

Pressure regulators are used with diving cylinders for scuba diving.The pressure inside the tank can exceed 3,000 psi (210 bar),which can cause fatal barotrauma to anyone breathing directly.A demand control regulator provides a flow of breathing gas at ambient pressure (ambient pressure varies with depth in the water).Decompression regulators are also used to provide breathing gas to surface-supplied divers and to personnel performing rescue and work on land using self-contained breathing apparatus.Supplemental oxygen and medical gases for high-altitude flight in unpressurized aircraft are also dispensed through decompression regulators stored at high pressure.

Mining industry

Because pressure increases rapidly with depth,underground mining operations require fairly complex water supply systems with pressure relief valves.These devices must be installed at a certain distance apart,usually 600 feet (180 meters).Without these valves,the pipes could easily burst and the pressure would be too great for the equipment to operate.

Natural gas industry

Pressure regulators are widely used in the natural gas industry.Natural gas is compressed to high pressure so it can be transported across the country through large transmission pipelines.Transfer pressures may exceed 1,000 psi (69 bar) and must be reduced through various stages to usable pressures for industrial,commercial and residential applications.There are three main pressure relief locations in this distribution system.The first decompression point is at the city gate,while the transmission pressure is dropped to distribution pressure to feed the entire city.This is also where the odorless natural gas is flavored with mercaptans.Distributed pressure is further reduced below 60 psig at regional conditioning stations located at various locations in the city.Final cutting will take place at the end user location.Typically,end users reduce pressure in the range of 0.25 psig to 5 psig.Some industrial applications may require higher pressure.

Back pressure regulator

• Maintain upstream pressure control in analytical or process systems.

• Protect sensitive equipment from overpressure damage.

• Reduce differential pressure for components that cannot withstand large differential pressures.

•  Natural Gas Sales Line.

• Production vessels (eg,separators,heater processors,or free water separators).

• Exhaust pipe or flare tube.