การผลิตเครื่องสูบของไหล

This class includes:
- manufacture of hydraulic and pneumatic components (including hydraulic pumps, hydraulic motors, hydraulic and pneumatic cylinders, hydraulic and pneumatic valves, hydraulic and pneumatic hose and fittings)
- manufacture of air prepa

This class excludes:
- manufacture of compressors, see 2813
- manufacture of pumps and valves for non-fluid power applications, see 2813
- manufacture of mechanical transmission equipment, see 2814