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Pneumatic Pumps
The pneumatic pumps were cylinders with a piston that, when depressed,
pushed air out the bottom port. The early pumps could push air out of the port
or draw air into the port. Later pumps included a check valve that only allowed
air to be pushed out of the port. |
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| 4701a | Pneumatic pump 84 | ||||||||
| 4701c01 | Technic Pneumatic Pump Old with Black Piston PR 1984-1988. Replaced by 2797. |
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| 2797 | Pneumatic pump 89 | ||||||||
| 2797c01 | Technic Pneumatic Pump New PR 1989-present. Replaced 4701a. |
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| Compressor pump | |||||||||
| x191c01 | Technic Pneumatic Pump Small PR 1992-present |
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