Pneumatic post systems were used in several large cities starting in the second half of the 19th century ( including an 1866 London system powerful and large enough to transport humans during trial runs – though not intended for the purpose ), but were largely abandoned during the 20th century.

Pneumatic post stations usually connected post offices, stock exchanges, banks and ministries.

* Pneumatic post stamps — for mail sent using pressurized air tubes, only produced in Italy.

** Pneumatic post, using capsules to move paper and small goods through tubes.

In 1869, the Beach Pneumatic Transit Company of New York secretly constructed a 95 m long, 2. 7 m diameter pneumatic subway line under Broadway, to demonstrate the possibilities of the new transport mode.

In Ghostbusters II, the " river of slime " under New York city is found by the Ghostbusters boys to be flowing through an old pneumatic tube line – a reference to the Beach Pneumatic Transit tube.

Pneumatic systems use gasses under pressure to transmit power ; compressed air is commonly used to operate pneumatic tools in factories and repair garages.

Pneumatic or pneumatic wet / dry vacuum cleaners are a specialized form of wet / dry models that hook up to compressed air.

The Mersey Pneumatic Railway received Royal Assent for a single line pneumatic railway in 1866 but failed to raise the necessary capital.

Pneumatic actuators, or pneumatic cylinders, are similar to hydraulic actuators except they use compressed gas to provide pressure instead of a liquid.

In 1869, Alfred Ely Beach and his Beach Pneumatic Transit Company of New York began constructing a pneumatic subway line beneath Broadway.

Pneumatic tube networks gained great prominence in the late 19th and early 20th century for businesses or administrations that needed to transport small but urgent packages ( such as mail or money ) over relatively short distances ( within a building, or, at most, within a city ).

* Pneumatic mail article from the U. S. National Postal Museum

* Pneumatic tube mail distribution networks

* Pneumatic mail systems

– Pneumatic mail

* 1863: First trial of the London Pneumatic Despatch Company to send mail by underground rail between postal depots.

* Pneumatic conveying systems often employ filtration to stop or slow the flow of material that is transported, through the use of a baghouse.

It was advertised as an “ Exclusive Pneumatic Down-stroke Filler .” To fill it, a knob at the end of the barrel is unscrewed and the attached plunger is drawn out to its full length.

Pneumatic dilatation causes some scarring which may increase the difficulty of Heller myotomy if the surgery is needed later.

Pneumatic dilatation is most effective on the long term in patients over the age of 40 ; the benefits tend to be shorter-lived in younger patients.

Pneumatic logic is a reliable and functional control method for industrial processes.

Pneumatic devices are still used in processes where compressed air is the only energy source available or upgrade cost, safety, and other considerations outweigh the advantage of modern digital control.

Pneumatic or elastic tires help by providing some springing for most of the ( otherwise ) unsprung mass, but the damping that can be included in the tires is limited by considerations of fuel economy and overheating.

A diaphragm pump ( also known as a Membrane pump, Air Operated Double Diaphragm Pump ( AODD ) or Pneumatic Diaphragm Pump ) is a positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or teflon diaphragm and suitable non-return check valves ( or flap valves ) to pump a fluid.

Pneumatic thermostats typically provide output / branch / post-restrictor ( for single-pipe operation ) pressures of 3-15psi which is piped to the end device ( valve / damper actuator / Pneumatic-Electric switch, etc.

* March-The Pneumatic Institution for research into the medical implications of newly-discovered gases is established by Thomas Beddoes in Bristol.

A Pneumatic gun differs from a rubber model in that it has a thicker spear that goes inside a sealed internal barrel encased in a hollow sealed outer casing that contains the air which is at ambient pressure until it is pumped up by hand to a pressure usually equal to one strong rubber band.

Low Church Anglicans believe in Pneumatic presence, or that Christ is mystically present in the faithful participation of the sacrament, but his physical person is in no way attached to the elements, nor do the elements become his physical body and blood.

; Pneumatic retinopexy: This operation is generally performed in the doctor's office under local anesthesia.

Pneumatic or hydraulic tools are particularly likely to be used in mines where there is an explosion risk ( such as underground coal mines ), since they lack any high-power electrical circuitry that might cause a triggering spark.

Occupied from Elizabethan times to the present day, the main buildings were built for the military protection of Milford Haven in the 1850s, but the most unusual feature is its use for trials of Edmund Zalinski's Pneumatic Dynamite Gun in the 1890s.

Pneumatic grinders are generally used for lighter duty jobs where more precision is required.

* Pneumatic — the rig is primarily powered by pressurized air

* Dunlop Pneumatic Tyre Co Ltd v Selfridge & Co Ltd AC 847, 855, Lord Dunedin, " An act or forbearance of one party, or the promise thereof, is the price for which the promise of the other is bought and the promise thus given for value is enforceable.

In 1861, the London Pneumatic Despatch Company built a system large enough to move a person, although it was intended for parcels.

** Pneumatic refuse conveying system

This system was developed by the London Pneumatic Despatch Company and became widely used ; Harrods in particular used this system until at least the 1960s.

* Pack ( aircraft ), P. A. C. K ( Pneumatic Air Cycle Kit ), a kit containing an air cycle machine that provides air conditioning as part of an aircraft's environmental control system

The Beach Pneumatic Transit was the first attempt to build an underground public transit system in New York City, USA.

The film An American Tail: The Treasure of Manhattan Island involves the main characters Fievel Mouskewitz and Tony Toponi exploring a series of caverns directly beneath one of the abandoned terminals for the Pneumatic Transit system.

Fievel and Tony discover that an ancient treasure lies underneath Manhattan when snooping around an abandoned subway ( the Beach Pneumatic Transit system ) and stumbling upon the remains of a dead mouse clutching a treasure map, deciding they must find it with the help of an archaeologist Tony knows: Dr. Dithering, along with fighting five villains as well.