Pneumatic Pump First Version : Part 4701c01 | BrickLink
LEGO MOC Lego Pneumatic Duplex Pump by Hans56 | Rebrickable - Build with LEGO
LEGO® 6152131 bb0875 - ToyPro
Mould FanMei 35 pneumatic kits are compatible with Lego, including 10 types of technical pneumatic cylinders, MOC air pump piston pressure rods, suitable for crane van spare parts set : Amazon.co.uk: Business,
Pneumatic Pump : Set 5107-1 | BrickLink
Lego Vacuum Pump - YouTube
HZYM Technical parts set, technical parts, air pump, push rod, switch, piston, air pipe, technique, stones, engineering, clamping blocks, compatible with Lego Technic : Amazon.nl: Toys & Games