Rock drill and bellows: what they have in common

1. Step 1. Rock drill — has part — Piston. A percussion piston.
2. Step 2. Piston — is part of — Piston pump. The piston draws in and pushes out liquid.
3. Step 3. Piston pump — has part — Check valve. Check valves direct the flow.
4. Step 4. Check valve — is part of — Bellows. An air intake valve.

Open Evothings