Goshfun 19Pcs 10-Kinds MOC Pneumatic Parts Bricks with Air Pump Push Rod Switch Piston Air Pipe, DIY Small Particle Stem Building Blocks Toy Set Compatible with Lego, Random Color of Air Pipe
BrickLink - Part x191c01 : LEGO Pneumatic Pump Small (5.5L) [Pneumatic] - BrickLink Reference Catalog
LEGO® 6133813 - 6156732 19482c01 - ToyPro
Air compressor - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
LEGO MOC Lego Pneumatic Engine 3 In-line by Nico71 | Rebrickable - Build with LEGO
Lego Vacuum Pump - YouTube
LEGO® bb0875 6152131 - ToyPro
High Tech Parts Blue Pneumatic Pump Small (6L) V2 with Reinforced Cylinder 19475 2793C01 1x5/2x6 Compatible with MOC 8800 Blocks|Blocks| - AliExpress
Build 35 Piece Pneumatic Kits with Technik Parts Contains Air Pump, Piston Pressure Rod, Air Lines, Pneumatic Parts Perfect for DIY, MOC Tech, Compatible with Lego
tutorial_iv [DASL Wiki]
LEGO Regulated Air Compressor
Modified LEGO Pneumatic Cylinder - V2 2x11 - Extra Large - 19467c01 – Green Gecko Workshop