<p><a href="https://www.wikiwand.com/en/Lego_pneumatics" rel="nofollow noreferrer">https://www.wikiwand.com/en/Lego_pneumatics</a> describes the various generations.</p>
<p>They describe V2 more as generation 2.1, pistons changed, but tubing and t-pieces stayed identical. Therefore I think it's safe to say that it's entirely compatible with all pneumatics from 1985 on ... The pneumatics prior to that is a different story...</p>

CC BY-SA 4.0
2022-08-24T19:04:34.730Z
I didn't know about gen 2.1, so I've updated my question to make it clearer. Can gen 2 pumps be used to create underpressure for the gen 1 pistons?
Yodo
CC BY-SA 4.0
2022-08-25T06:16:39.577Z
That was not necessary, it's merely the nomenclature the article uses, lego uses V2
Michael Verschaeve
CC BY-SA 4.0
2022-08-24T16:13:02.327Z
2022-08-24T16:13:02.327Z
Michael Verschaeve
<p>I think they are at least partially compatible, but how much so? Can generation 1 and generation 2 cylinders easily and effectively be combined in one pneumatic pipe system? I.e. a set of pipes, tubes and other parts that exchange the air and are pressurized by the same pump. And how can possible problems be overcome?</p>

<technic><compatibility><pneumatic>
Are LEGO Pneumatics gen 1 and gen 2 compatible?
Yodo
# Are LEGO Pneumatics gen 1 and gen 2 compatible?

(Asked by: username_0 on 2022-08-24)

I think they are at least partially compatible, but how much so? Can generation 1 and generation 2 cylinders easily and effectively be combined in one pneumatic pipe system? I.e. a set of pipes, tubes and other parts that exchange the air and are pressurized by the same pump. And how can possible problems be overcome?

**Tags:** technic, compatibility, pneumatic


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## 1 answers

### Answer by username_1 on 2022-08-24. Score: 2

<https://www.wikiwand.com/en/Lego_pneumatics> describes the various generations.

They describe V2 more as generation 2.1, pistons changed, but tubing and t-pieces stayed identical. Therefore I think it's safe to say that it's entirely compatible with all pneumatics from 1985 on ... The pneumatics prior to that is a different story...

> **Comments:**
> **username_0**: I didn't know about gen 2.1, so I've updated my question to make it clearer. Can gen 2 pumps be used to create underpressure for the gen 1 pistons?  
> **username_1**: That was not necessary, it's merely the nomenclature the article uses, lego uses V2  

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