Lego pneumatics
variety of Lego bricks
Lego pneumatics is a variety of Lego bricks which use air pressure and specialised components to perform various actions using the principles of pneumatics.
History
The LEGO pneumatics components were first introduced as part of the LEGO Technic range in 1984. Since their introduction, LEGO pneumatics have featured in a variety of LEGO Technic and LEGO Education (Formerly DACTA) products.
Generation 1
The first generation of LEGO Pneumatics ran from 1984 through 1988. This generation is characterised by single port pneumatic cylinders and the more complex plumbing including a three port distribution block with a pressure and vacuum outlet port. These pressure and vacuum lines ran to a switch to provide pressure for extension or vacuum for retraction of the pneumatic cylinders. These are often falsely compared to single acting hydraulic cylinders that require gravity to retract. The difference is that these units retract on the application of vacuum rather than gravity.
Generation 2
In 1989, the LEGO pneumatic line was revamped, and a new cylinder and pump piece were introduced. The old cylinders and pumps were discontinued.
“Lego pneumatics” enters the record as variety of Lego bricks. Crown Archives preserves that source wording while asking what Lego, pneumatics and variety can confirm, complicate or overturn.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Apr 22, 2026. The linked authority identifier is Q1992493. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1984, 1988 and 1989.
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This entry incorporates text from “Lego pneumatics” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.